Professor Alireza Ahmadian

- Professor, Tehran University of Medical Sciences, TUMS, Department of Medical Physics & Biomedical Engineering.

- Head of School of Advanced Technologies in Medicine, SATIM.

- Head of Research Centre for Biomedical Technology & Robotics, RCBTR.

- Deputy of Research Centre for Science and Technology in Medicine, RCSTIM

Address: Tehran University of Medical Sciences, Department of Biomedical Systems & Biophysics, Keshavarz Blvd. Poursina Ave, Tehran, Iran. Phone: +98-21 66466383   Fax: 021 66581533 Date and Place of Birth: 1965 , TehranNationality: Iranian Email: ahmadian@sina.tums.ac.ir      alireza.ahmadian@ieee.org

http://www.tums.ac.ir/faculties/ahmadianhttp://scholar.google.com/citations?hl=en&user=wfUhhu8AAAAJwww.parsiss.com

Academic Qualifications:

1999-2001 King’s College London, Department of Electronics Engineering. Postdoctoral Position, Research Associate at Biomedical Lab.

1993-1997 Imperial College of Science and Technology in Medicine, London. Department of Biomedical Engineering, Biomedical imaging Group, Ph.D in Biomedical Image Processing

1989-1992 Tehran University. Department of Electrical Engineering. Master of Science M. Sc: Digital Communication Systems.

1983-1988 Isfahan University of Technology. Department of Electrical Engineering. Bachelor of Science B. Sc: Communication Systems

Appointment:

(2014-Present) Head of School of Advanced Technologies in Medicine, Tehran

University of Medical Sciences, TUMS.

(2011-Present) Head of Research Center for Biomedical and Robotics Technology,

TUMS.

(1987-Present) Academic Member of Department of Biomedical Systems & Medical

Physics, Tehran University of Medical Sciences.

(2006-Present) Deputy of Research Centre for Science & Technology in Medicine,

RCSTIM

(2010- 2014) Head of Biomedical Engineering and Biophysics Department, Tehran

University of Medical Sciences, TUMS

(2006-Present) Senior Member of Institute of Electrical and Electronics Engineers,

USA, IEEE

Administrative Responsibilities:

Member of steering committee of Research Centre for Science and Technology in Medicine, 2003-Present.

Member of Innovative Technology Committee, Tehran University of Medical

Sciences, Tehran, Iran.

Director of TUMS Research Core Facility.

CEO and Founder of Parseh Intelligent Surgical Systems Company; a Knowledge Based Company

Head of Image Guided Intervention Group, RCBTR, 2004-Present

Executive member of virtual university steering committee at MSRT , (2001-2005)

Head of IT Department at Ministry of Science, Research and Technology , (2001-2005)

Member of board committee of biomedical engineering at Ministry of Health, Treatment and Education, MHTE , 2003-Present

Professional Activities:

Research Assistant at Iran Telecommunication Research Center, Speech Processing Group 1991- 1993.

Supervisor for signal & image processing laboratory, Imperial College, 1995-1997

Project manager for implementing a pilot PACS system at imaging center of Emam hospital, 1998- 2000.

Planning a postgraduate course for health informatics, approved by education authority of TUMS.

Planning and setting up biomedical signal and image processing laboratory at TUMS.

Reviewer for several conference and journal papers in the field of biomedical image processing.

Supervising over 50 graduate/postgraduate students at TUMS. Project manager for more than 40 research projects collaborated by TUMS.

Review Boards:

Scientific reviewer for the following prestigious Journals:

International Journal of Computer Assisted Surgery, IJCARS, Springer, USA. Public Library of Science, PLOS, USA.

IEEE Transactions on Biomedical Engineering, TBME, USA.

Biomedical Signal Processing & Control, Elsevier, Netherlands.

Journal of Visual Communication and Image Representation, Elsevier, Netherlands.

Biomedical Signal Processing and Control, Elsevier, Netherlands.

International Journal of Medical Robotics and Computer Assisted Surgery, Springer, USA.

IEEE Transactions on Medical Imaging, USA.

Awards:

The recipient of first rank on Innovators and Inventors, 19th Razi International Festival in Medical Sciences, Tehran, February, 2014.

Achieving the Engineering and Physical Sciences Research Council, EPSRC, National Foundation Grant for a Post-Doctoral Position in King’s College London, 1999, UK.

Appointed as the Senior Member of Institute of Electrical & Electronic Engineering, USA, 2006.

Journal Editorial

Member of the Editorial Board of Frontiers in Biomedical Technology, the official scientific quarterly publication of the Institute of Medical Technologies, Tehran University of Medical Sciences.

Member of the Editorial Board of the Journal of Iranian Society of Biomedical Engineering.

Patents:

Internal:

Image Guided Surgery System, Alireza Ahmadian, Javad Hasani Bidgoli, Mohmmad Jalal Sadeghi, Farzam Farahmand, Saeed Sarkar, Tehran, Iran, 2013.

International:

Surgical instrument, US Patent App. 29/582,903, 2018.

Navigating an imaging instrument in a branched structure, US Patent App.

15/986,724, 2018.

Location tracking on a surface, US Patent App. 15/894,459,2018.

Device for brain biopsy, US Patent App. 15/854,442,2018.

Robotic guide for brain biopsy, US Patent App. 15/829,791,2018.

Surgical Instrument, Filed USA Patent, 2016.

Robotics Brain Biopsy System, Filed USA Patent, 2016.

ACURCT for Biopsy Procedures, Filed USA Patent, 2016.

Frictionless Tool for 3D surface Data Acquisition, Filed USA Patent, 2016.

Endobronchial Image Guided Navigation System for Transbronchial Biopsy of

Peripheral Nodules of Lung, Pending USA Patent.

A Method and Apparatus for Reduction of Registration Error in Image Guided Surgery

Systems Alireza Ahmadian, Provisional USA Patent, 2012

A Method and Apparatus for Estimation of Soft Tissue Deformation Based on Intra-Operative Stereo Image Features and Point-Based Registration, USA Patent, 2012

Founder of Knowledge Based Company:

CEO and Founder of Parseh Intelligent Surgical Systems Company, Parsiss, 2007.

Parsiss Company started working on the design and implementation of an image guided surgery systems to minimize the invasiveness of surgical procedures by the state-of-the-art solutions. This system enhances surgeon’s ability to navigate instruments over anatomical structures very precisely.  We offer a fully customizable platform technology to develop advanced image guided systems for different applications such as neurosurgery (OpticVisionTM), ENT (ImageVisionTM), Dental Implant (DentoGuideTM). Our products are CE marked. For more details please visit our web site at www.parsiss.com.

Teaching Courses:

Digital Signal Processing, DSP (2000-Present).

Digital Image Processing, DIP (2001-Present).

Biomedical Signal & Image Processing (2003-2005)

Programming with MATLAB (2000-Present)

Biomedical Signal Processing, BSP (2003-Present)

Random Variables and Stochastic Processes(2005)

Applied Mathematics (2002-2003)

Information Technology in Medicine (2003-2004)

Applied Statistics (2003-2005)

Seminars in Biomedical Engineering (2001-Present)

Medical Image Processing Using MATLAB (Imperial College, 1997)

Statistical Pattern Recognition (2010-present)

Session Chair at Conferences:

Telemedicine Panel at International symposium on telecommunication, Tehran IST2001.

Image Processing Panel at Visualization, Imaging, and Image Processing, IASTED-VIIP 2005, Spain.

Research Projects:

1- Software development for preplanning Zygoma fracture reduction in order to teach maxillofacial surgeon.

2- Free-hand 3D ultrasound image reconstruction using stereo cameras.

3- Evaluation and Optimization of Photoacoustic system geometry based on diode in breast phantom.

4- Evaluation of Direct Intraoperative Endoscopic Video Registration to Pre-Operative Images for Endonasal Skull Base Surgery.

5- Design of pulse generator for photoacoustic imaging.

6- Sparse Registration of Ultrasound and CT images of Bronchial Phantom to localize Transbronchial needle aspiration (TBNA) in Image Guided Bronchoscopy systems.

7- Proposing and evaluating of a photoacoustic imaging simulator system for early detection of dental carries.

8- Proposing a method for segmentation and illustrative visualization of 3D ultrasound images of vessels in liver tumor surgery.

9- Non-rigid hybrid registration of photo-acoustic and MR images to calculate brain shift in sparse space.

10-Design and evaluation of a laboratory prototype Photoacoustic imaging system for imaging of Glioma in brain phantom.

11-The effect of an electromagnetic navigation system to increase accuracy of dental implant placement, by comparing the position of the implant in the planning phase and after the procedure, comparing results to dental implant placement using stents.

12-3D Extraction of Anatomical Structures of Nasal Cavities Using Endoscopic Data

13-Designing Image processing system for Sonography Instrument by Creating Graphic User Interface, and Processing and Analyzing of the Images for Vital Parameter Estimation (LV-Mass, Ejection Fraction), and also Estimating Motions of Myocardium

through Cardiac Cycles.

14-Design and Implementation of algorithm for Automatic Segmentation of Intra-Vein Contrast Agent in CT Images in Correction of Contrast Agents Artifacts in CT-Based Attention Correction in PET.

15-Evaluation of Interactive algorithm for semi-automatic segmentation for images of brain tumor to apply in surgery navigation systems.

16-Developing Touchless Interaction with 3D Preoperative Model Software in Sinus and Sellar Floor Surgery.

17-Introducing a method for Marker-free registration of pre-operative CT and intra-operative stereo images Applied in Image Guided Implantology.

18-Error Reduction in Electromagnetic Navigation Bronchoscopy Based on Respiratory Motion Estimation.

19-Evaluation of hybrid navigation system using electromagnetic trackers and ultrasound images for biopsy of peripheral lung lesions.

20-Design a Patient Registration Mask by Using Micron Tracker Camera for Image Guidance Surgery.

21-Measurement and analysis of brain shift in MRI brain images using displacement fields.

22-Evaluation of non-Rigid registration of ultrasound and MRI images on simulated phantom of brain to calculate brain shift.

23-Error Analysis of Electromagnetic Tracking by using IR Tracking.

24-Design and implementation of a web-based system for analysis and transmission of ECG signals.

25-Design and implementing an automated system for segmentation and polyp detection of colon images.

26-Implementing a computer aided diagnosis (CAD) system for analysis and enhancement of mammography images.

27-Analysis, design and implementing a mini PACS system for Imam Hospitals

28-Design and implementing a pilot system for texture classification of ultrasound liver images.

29-Design and implementing a PC based system for analysis and transmission of ECG signals.

30-Design of Colonic Center-line Extraction Software for Virtual Camera Navigation in by CT-images of Colon

31-Simulation of Ultra-Wide Band (UWB) system for wireless detection of Heart Rate Variability (HRV) in MATLAB/C environment

32-Computed tomography (CT) Metal artifact reduction using sinogram correction in MATLAB/C environment

33-Design and Implementation of a User Interface for Airway Tree Segmentation and 3D Visualization

34-Designing and implementation of GUI for myocardial motion analysis processor in B-Mode echocardiography images based on MATLAB environment

35-Design and Implementation of An ITK, VTK Based Segmentation Engine With Application of Brain Tumors Segmentation in MRI

36-Evaluation of an optical tracking device for image guided surgery system.

37-Design and Implementation of an Image guided surgery system for Brain navigation.

38-Design and implementation a system for brain shift modeling in image guided surgery using stereo camera.

39-Computed Tomography (CT) Metal artifact reduction using sinogram correction in MATLAB/C environment

40-Design and Implementation of a GUI for Automatic Segmentation of oral Contrast Agent in CT Images: Application in Correction of Oral Contrast Artifacts in CT-Based Attenuation Correction in PET

41-Micro-Controller Based ECG Simulation and Real-Time AR Detection

42-Evaluation of UWB Transceiver for Wireless Cardiac and Respiratory Motion Estimation

43-Simulation of Ultra-Wide Band (UWB) system for wireless detection of Heart Rate Variability (HRV) in MATLAB/C environment

44-An Efficient Piecewise Modeling of ECG Signals Based on Hermitian Basis Functions

45-A Blind Multi Secret key Watermarking of ECG Signals on Medical Images Using EZW Algorithm

46-Automated Path Planning system for Virtual Bronchoscopy

47-Improvement of Image Quality and Patient’s Dose Reduction in 64 Slice CT Scanner by Optimization of X-ray Spectra Filtration Using Experimental Measurement and Monte Carlo Simulation

Graduate Thesis Supervised:

1. Progressive medical image transmission using embedded zerotree wavelet (EZW) algorithm, 2001.

2. Hardware & software implementation for a fatal monitoring system, 2002.

3. Modeling of 2D array transducer for beam optimization in 3D ultrasound imaging, 2002.

4. Detection of microcalcifications in digital mammography images using wavelet & fuzzy logic, 2002.

5. Implementation of an image indexing method for medical images, 2002.

6. Texture feature extraction for classification of liver sonography images for diagnose of liver diseases, 2003.

7. Comparison of laser-ultrasound detection systems sensitivity with a broadband ultrasonic source for biomedical applications, PhD Thesis, 2004.

8. Speckle de-noising of ultrasound images using wavelet & Bayesian method , 2004.

9.  ECG feature extraction using wavelet & neural networks, 2005.

10.An efficient colon segmentation and polyp detection for CT colonography images using multi-stage algorithm and 3D analysis, 2005.

11.  Classification of microscopic endometrial images using morphological & wavelet analysis 2005.

12.Design and implementation of three dimensional (3D) path planning for virtual bronchoscopy, 2006

13.ECG modeling using nonlinear fuzzy techniques for arrhythmia detection, 2006.

14.  Watermarking of ECG on medical images using embedded zero tree wavelet algorithm, 2006.

15.Evaluation of preprocessing methods on the functionality of ICA algorithm using artificial activated fMRI data, 2007.

16.  Evaluation of the Accuracy of Fiber Crossing Detection Using Different Tractography Methods on Diffusion Tensor Imaging (DTI) Data, 2007..

17.Automatic Segmentation of Colonic Boundaries in CT Scan Images Using Geometric Deformable Model, 2007

18. Intra-thoracic Airway Tree Segmentation From CT Images Using Fuzzy Connectivity Method, 2008

19.Myocardial Motion Analysis in B-Mode echocardiography Images For Diagnosis of Cardiac Failures, 2008

20.Mammography mass detection based on wavelet and ranklet transform, 2008

21.Design and implementation of thoracic non-rigid CT and PET image registration, 2010.

22.Atlas-Based Segmentation of Pre-Ventricular MR Images of Normal Human Brain by Non-rigid Registration, 2009.

23.Evaluation of Brain tumor deformation using elastics models, 2010.

24.Design and implementation of ultrasound and MRI image registration on simulated phantom of brain apply to calculate brain shift, 2011

25.Measurement and analysis of brain shift in frontal region of skull in MRI brain images using deformable models, 20111

26.Fiducial free registration for Image guided surgery, 2011.

27.Registration of preoperative CT to Ultrasound for Correction of Deformation in liver phantom, 2012.

28.CT and Stereo image registration for Spine deformation correction in image guided spine surgery, 2012.

29.A new Hybrid setup for Brain-shift Visualization using electromagnetic Guided Intra-operative Doppler, 2014.

30. A novel Hybrid system for Patient dose reduction in Image-guided Surgery using a Mobile C-arm, 2014.

31.Adaptive Registration of Endoscopic Videos to MDCT images for Error Reduction in

ENT Navigation Systems, 2015.32. Intra-operative Brain Shift Correction Using a Hybrid Method based on Deformation

Tracking and US Doppler Data, 2016.

Thesis under Supervision:

1. Design and implementation an interactive algorithm for gliomas segmentation in MRI

images using deep learning methods.

2. Registration of 2D fluoroscopic images and preoperative CT image in the guided

procedure of lumbar spine injection.

3. Design and implementation of a needle navigation system using ultrasound image

and magnetic sensors fusion in the ultrasound based spine needle interventions.

4. Designing reduction procedure of zygoma fracture using CT atlas for navigation

system.

5. Sparse Registration of Ultrasound and CT images of Bronchial Phantom to localize

Transbronchial needle aspiration (TBNA) in Image Guided Bronchoscopy systems.

6. Non-rigid hybrid registration of photo-acoustic and MR images to calculate brain shift

in sparse space.

7. Design and evaluation of a laboratory prototype Photoacoustic imaging system for

imaging of Glioma in brain phantom.

8. Proposing and evaluating of a photoacoustic imaging simulator system for early detection of dental carries.

9. Proposing a method for segmentation and illustrative visualization of 3D ultrasound images of vessels in liver tumor surgery.

10.Design and Implementation of a semi-automatic Interactive algorithm for segmentation for MRI images of Glioma Brain tumor to apply in surgery navigation systems.

11.Statistical Model Based Registration of CT/MRI Images with intra-operative Ultrasound imaging to Guide the Lumbar Spinal Needle Injections.

12.Designing Continuous Image Guiding System in Bronchoscopy Using Combination of CT-video Registration and Electromagnetic tracking

Publications:

Journal:   

1- Seyed Mohammad Reza Noori, Parastoo Farnia, Mohammad Bayat, Naghmeh Bahrami, Ali Shakourirad, Alireza Ahmadian, Automatic detection of symmetry plane for computer-aided surgical simulation in craniomaxillofacial surgery, Journal of Physical and Engineering Sciences in Medicine, 2020.

2- Parastoo Farnia, Ebrahim Najafzadeh, Ali Hariri, Saeedeh Navaei Lavasani, Bahador Makkiabadi, Alireza Ahmadian, and Jesse V. Jokerst, A Dictionary Learning Technique Enhances Signal in LED-based Photoacoustic Imaging, Journal of biomedical optic express, 2020.

3- Parastoo Farnia, Mohammad Mohammadi, Ebrahim Najafzadeh, Maysam Alimohamadi, Bahador Makkiabadi, Alireza Ahmadian, High-quality photoacoustic image reconstruction based on deep convolutional neural network: towards intra-operative photoacoustic imaging, Journal of Biomedical Physics & Engineering Express, 2020.

4- E Najafzadeh, H Ghadiri, M Alimohamadi, P Farnia, M Mehrmohammadi, A Ahmadian, Evaluation of multi - wavelengths LED - based photoacoustic imaging for maximum safe resection of glioma: a proof of concept study, International Journal of Computer Assisted Radiology and Surgery, 2020.

5- Samaneh Alimohamadi Gilakjan, Hossein Majedi, Bahador Makki Abadi, Alireza Ahmadian, Spinal pain relief procedures with the assistance of the MRI ‐ updated statistical shape model , The International Journal of Medical Robotics and Computer Assisted Surgery, 2020.

6- Jalil Jalili, Sedigheh M Hejazi, Mohammad Riazi-Esfahani, Arash Eliasi, Mohsen Ebrahimi, Mojtaba Seydi, Masoud AghsaeiFard, Alireza Ahmadian, Retinal image mosaicking using scale-invariant feature transformation feature descriptors and Voronoi diagram (Erratum), Journal of Medical Imaging, 2020.

7- Ebrahim Najafzadeh, Hossein Ghadiri, Maysam Alimohamadi, Parastoo Farnia, Mohammad Mehrmohammadi, Alireza Ahmadian, “ Application of multi-wavelength technique for photoacoustic imaging to delineate tumor margins during maximum-safe resection of glioma: A preliminary simulation study ” , Journal of Clinical Neuroscience, 2019.

8- S Navaei Lavasani, M Deevband, P Farnia, A Ahmadian, S Saghatchi, “ Compensation of Dynamic Electromagnetic Field Distortion Using Simultaneous Localization and Mapping Method with Application in Endobronchial Ultrasound ‐ Transbronchial Needle”, The International Journal of Medical Robotics and Computer Assisted Surgery, 2019. 

9- Samira Arabpou, Ebrahim Najafzadeh, Parastoo Farnia, Alireza Ahmadian, Hossein Ghadiri, Mohammad Sadegh Ahmad Akhoundi, “Detection of Early Stages Dental Caries Using Photoacoustic Signals: The Simulation Study ” , Frontiers in Biomedical Technologies, 2019.

10- Samaneh Alimohamadi Gilakjan, Javad Hasani Bidgoli, Reza Aghaizadeh Zorofi & Alireza Ahmadian, “Artificially enriching the training dataset of statistical shape models via constrained cage-based deformation”, Australasian physical & engineering sciences in medicine, 2019.

11- Mehdi Samavati, Alireza Ahmadian, Hamidreza Abtahi, Amirhossein Golnabi, Asl Reza Arjmandi, “ A Hybrid Method for Real-Time Bronchoscope Tracking Using Contour Registration and Synchronous EMT Data (PHYSICS) ”, IRANIAN JOURNAL OF RADIOLOGY, 2019.

12- Peyman Ghobadi Azbari, Mostafa Abdolghaffar, Saeed Mohaqeqi, Mohammad Pooyan, Alireza Ahmadian, Niloofar Ghanbarzadeh Gashti ,“ A novel approach to the extraction of fetal electrocardiogram based on empirical mode decomposition and correlation analysis ”, Australasian physical & engineering sciences in medicine, 2017.

13- P Dezfouli, M Ali, M Parto Dezfouli, A Ahmadian,et al.”Quantification of 1H–MRS signals based on sparse metabolite profiles in the time‐frequency domain” Journal of NMR in Biomedicine,2017.

14- PG AZBARI, A Ahmadian, et al.”A hybrid tracking system for image-guided spine surgery using a tracked mobile C-arm: a phantom study ”, Turkish Journal of Electrical Engineering & Computer Sciences 25 (1), 434-448, 2017.

15- Amrollah Mohammadi, A. Ahmadian, et. al. “A combined registration and finite element analysis method for fast estimation of intraoperative brain shift; phantom and animal model study, Int J Med Robotics Computer Assisted Surger 2016, John Wiley & Sons.

16- ND Serej, A Ahmadian, et al. “A robust keypoint extraction and matching algorithm based on wavelet transform and information theory for point-based registration in endoscopic sinus cavity data ” , Journal of Signal, Image and Video Processing 10 (5), 983-991, 2016.

17- A Mohammadi, A Ahmadian, et al. “Estimation of intraoperative brain shift by combination of stereovision and doppler ultrasound: phantom and animal model study”, International journal of computer assisted radiology and surgery, 2015.

18- J Hasani-Bidgoli, SM SadrHosseini, A Safavi-Naeini, H Saberi, A Ahmadian , “Experimental Evaluation of PARSISS Image Guided Surgery System ” , Journal of Frontiers in Biomedical Technologies, 2015.

19- P. Farnia, A. Ahmadian, T. Shabanian, N. D. Serej, J. Alirezaie, “Brain shift compensation by non-rigid registration of intra-operative ultrasound images with preoperative MR images based on residual complexity”, International Journal of Computer Assisted Radiology and Surgery, 2015.

20- M. Ershad, A. Ahmadian, H. Saberi, ”Preoperative CT and Intra-Operative Physical Space Registration of the Spine using an Articulated Model: a phantom study “,Journal of Frontiers in Biomedical Technologies, accepted, 2015.

21- P. Farnia, A. Ahmadian, N. Dadashi, “Performance Evaluation of the Modified Iterative Closest Point Methods for Intra-operative Ultrasound and pre-operative MR Image Registration of Brain ” Journal of Frontiers in Biomedical Technologies, accepted, 2015.

22- N. Dadashi, A. Ahmadian, S. Mohagheghi, S. M. SaderHose, “A Projected Landmark Method for Reduction of Registration Error in Image Guided   Surgery Systems ", International Journal of Computer Assisted Radiology and Surgery, JCARS, accepted, May 2015.

23- A. Ahmadian,A. Fathi, S. Mohagheghi, K. Amini, M. Sadr, "A Region-Based Anatomical Landmark Configuration for Sinus Surgery Using Image Guided Navigation System: A Phantom-Study   ", Journal of Cranio-Maxillo-Facial Surgery, 2014.

24- S. Mohagheghi, A. Ahmadian, “Accuracy assessment of a maker-free Method for Registration of CT and Stereo Images applied in Image Guided Implantology: a phantom study ” ", Journal of Cranio-Maxillo-Facial Surgery, 2014.

25- Mohammad Reza Ay, Afshin Akbarzadeh, Alireza Ahmadian, Habib Zaidi, “ Classification of bones from MR images in torso PET-MR imaging using a statistical shape model ”, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 734, Part B, 11 January 2014.

26- Elaheh Kia ,  Anahita Fathi Kazerooni , Alireza Ahmadian et al, “Improved Quantification of Dynamic Contrast Enhanced MR Imaging (DCE-MRI) in Adnexal Masses by Elastic Registration Method”,  Iranian Journal of Radiology 11(S1) · March 2014.

27- Afshin Akbarzadeh, Daniel Gutierrez, Aylin Baskin, Mohammad Reza Ay, Alireza Ahmadian et al, “Evaluation of whole-body MR to CT deformable image registration”, Journal of Applied Clinical Medical Physics 14(4):4163 · July 2013.

28- Fatemeh Nazema, Alireza Ahmadian, Nasim DadashiSeraj, Masoumeh Giti, "Two-stage point-based registration method between ultrasound and CT imaging of the liver based on ICP and Unscented Kalman Filter: A phantom study" Int J CARS, 9:39–48, 2014.

29- Marzieh Ershad, Alireza Ahmadian, Nassim Dadashi Seraj, Hooshang Saberi, Keyvan Amini Khoiy, "Improving target registration error in vertebra during image-guided spine surgery",

Int J CARS, 9:29–38, 2014.

30- A. Ahmadian, N. dadashi, S. karimifard, P. farnia, "An Efficient Method for Estimation of Soft Tissue Deformation Based on Intra-Operative Stereo Image Features and Point-Based Registration" International journal of imaging systems and technology, IJIMS, Vol. 23, 294-303, August 2013.

31- Hossein Yousefi, Alireza Ahmadian, Davood Khodadad, Hooshangh Saberi, Alireza Daneshmehr, "An Optimised Linear Mechanical Model for Estimating Brain Shift Caused by Meningioma Tumours" International Journal of Biomedical Science and Engineering, IJBSE, Vol. 1, No. 1, June 2013.

32- Marzieh Ershad, Alireza Ahmadian , et al,“ Minimization of target registration error for vertebra in image-guided spine surgery ”, Interational Journal of Computer Assisted Radiology and Surgery, july 2013.

33- A. Ahmadian, A. Hashemi, M. Baboli, "An Efficient Algorithm for Remote Detection of Simulated Heart Rate Using Ultra-Wide Band Signa l  ",American Journal of Biomedical Engineering, 3(6):199-207, 2013.

34- A. Mirbagheri, M. A. Baniasad, F. Farahmand, S. Behzadipour, A. Ahmadian, “Medical Robotics: State-of-the-Art Applications and Research Challenges”. International Journal of Healthcare Information Systems and Informatics. 2013;8(2):1-14.

35- Abolfazl Zanghaei, Mohammadjavad Abolhassani, Alireza Ahmadian, Mohammad Reza Ay, and Houshang Saberi, “A New Method to Enhance the Clustering Algorithm”, International Journal of Computer and Electrical Engineering, Vol. 5, No. 1, 171-175 , February 2013.

36- D. Khodadad , A. Ahmadian, H. Y. Banaem, M. Ay, A. F. Esfahani, "CT and PET Image Registration: Application to thorax area" Journal of Image and graphic, Vol. 1, No. 4, December 2013 .

37- Fereshteh Yousefi Rizi, Alireza Ahmadian, Nader Rezaie, Seyed Amir Iranmanesh, "Leakage Suppression in Human Airway Tree segmentation Using Shape Optimization based on Fuzzy Connectivity Method" International Journal of Imaging Systems and Technology, John Willey , Volume 23, Issue 1, 71–84, 2013.

38- Ebrahim Najafzadeh, Marjaneh Hejazi, Alireza Ahmadian, Hanieh Mohamadreza , “ Spectral Separation of Quantum Dots within Tissue Equivalent Phantom Using Linear Unmixing Methods in Multispectral Fluorescence Reflectance Imaging”, Iranian Journal of Medical Physics, 177-182, 2012.

39- Afshin Akbarzadeh , Mohammad Reza Ay , Alireza Ahmadian and H Zaidi, “MRI-guided attenuation correction in whole-body PET/MR: Assessment of the effect of bone attenuation”, Annals of Nuclear Medicine 27(2) · December 2012.

40- Azadeh Sharafi, Mehran Baboli, Mohammad Eshghi, Alireza Ahmadian, “Respiration-rate estimation of a moving target using impulse-based ultra wideband radars”, Australas Phys

Eng Sci Med , 35:31–39, 2012.

41- Farzam Farahmand, Hamid R Amirnia, Saeed Sarkar, Saeed Behzadipour, Alireza Ahmadian et al. “An overview of medical robotics in Iran ”, Journal of Annales des Mines-Réalités industrielles, 65-75, 2012.

42- S. Karimifard, A. Ahmadian, M. Khoshnevisan, "A Robust Methods In Diagnosing Morphological Heart Arryhthmias Based On Hermitian Model of Higher Order Statistics   "Journal of Biomedical engineering online,  28;10:22, 2011.

43- Fahimeh Darki ,  Mohammad Ali Oghabian ,  Alireza Ahmadian et al, “ Fractional anisotropy ‐ weighted front evolution algorithm for white matter tractography based on diffusion tensor imaging data”, International Journal of Imaging Systems and Technology 21(4):307 - 314 · December 2011.

44- Mahdi Marsousi, Alireza Ahmadian, Armen Kocharian, Javad Alirezaie, "Active Ellipse Model and Automatic Chamber Detection in Apical Views of Echocardiography Images   "Ultrasound in Medicine and Biology Journal,;37(12):2055-65, 2011.

45- Mohammad-Saleh Nambakhsh, Alireza Ahmadian, Habib Zaidi, "A Contextual Based Multiple Watermarking of PET Images by Patient ID and ECG Signal" Computer Methods and Programs in Biomedicine, IO pp 418-425 , 2010.

46- Sina Zarei Mahmoodabadi, Alireza Ahmadian,Mohammadjavad Abolhasani, Paul Babyn,Javad Alirezaie, "A fast expert system for electrocardiogram arrhythmia detection" Expert Systems, Vol. 27, No. 3,pp 180-200 , July 2010.

47-  Mehrsima Abdoli, Mohammad Reza Ay,  Alireza Ahmadian et al, “Optimization of weighted virtual sinogram-based metal artifact reduction in CT-based attenuation correction of PET data using a genetic algorithm” SORT (Statistics and Operations Research Transactions) October 2010.

48- Mehrsima Abdoli, Mohammad Reza Ay, Alireza Ahmadian, "A virtual sinogram method to reduce dental metallic implant artefacts in computed tomography- based attenuation correction

for PET" Nuclear Medicine Communications 2010, Vol. 31 No 1,pp 22-31 , 2010 .

49- Mehrsima Abdoli,Mohammad Reza Ay,Alireza Ahmadian,Rudi A. J. O. Dierckx,Habib Zaidia, "Reduction of dental filling metallic artifacts in CT-based attenuation correction of PET data using weighted virtual sinograms optimized by a genetic algorithm" Medical Physics, Vol. 37 (12), December 2010.

50- Fereshteh Yousefi Rizi, Alireza Ahmadian et al.“ Intrathoracic Airway Tree Segmentation from CT Images Using a Fuzzy Connectivity Method ”, Iranian Journal of Medical Physics, pages 71-83, 2009.

51- Mehrabani BM, Abolhasani M, J. Ahmadian, A. Alirezaie, “Fast and Noninvasive Thermal

Monitoring in Ultrasound Digital Images Using Optical Flow Method”, iranian journal of biomedical engineering, 2009.

52-  F. Darki, A.R. Ahmadian, H. Soltanian Zadeh, M. Zarei, M.A. Oghabian, " Improvement of White Matter Fiber Tracking Based on Diffusion- Tensor MR Imaging Data Using Modified Speed Functions" Iran Journal of Radiology,6(4),pp 231-236 , 2009 .

53- Sarkar, MD Abolhassani, F Farahmand, AR Ahmadian, R Saber, "Research activities at the research center for science and technology in medicine" Iranian Journal of Public Health,Vol.38,Suppl.1 , 2009 .

54- A. Ahmadian M. R. Ay, J. H. Bidgoli, S. Sarkar and H.b Zaidi, "Correction of Oral Contrast Artifacts in CT- Based Attenuation Correction of PET Images Using an Automated Segmentation Algorithm" Eur. J. Nucl. Med. Mol. Imaging, 2008, 35, 1812-1823. , 19 February 2008.

55- Nima Sahba, Vahid Tavakoli, Alireza Ahmadian et al. “Hybrid local/global optical flow and spline multi-resolution analysis of myocardial motion in B-mode echocardiography images ” , Electronic Journal, 2008.

56- Hanieh Mohammadreza, Marjaneh Hejazi, MMohammad Ali Oghabian, Alireza Ahmadian et al, “Measurement of Choroidal Neovascular Area in Age-Related Macular Degeneration using

Modified Otsu’s Thresholding Method ”, Iranian Journal of Medical Physics, Volume 5, page 77-84, 2008.

57- Alam N Riahi, Zoroufi R Aghaeizadeh, Masoumeh Giti, Arian Deldari, Ar Ahmadian “Evaluation, analysis and designing of a computer-aided diagnostic (CAD) system for digital

mamograms in Iran ” , IRANIAN JOURNAL OF BIOMEDICAL ENGINEERING, 157-165, 2007.

58- N Riyahi‐Alam, F Younesi, R Aghaiizadeh Zoroofi, A Ahmadian, M Guiti,“SU ‐ FF ‐ I ‐ 02: Computer ‐ Aided Mass Detection On Digitized Mammograms Using Adaptive Thresholding and

Fuzzy Entropy ” , American Association of Physicists in Medicine, 2007.

59- F Darki, A Ahmadian, H Soltanianzadeh, Mojtaba Zareei, Ma Oghabian “ Evaluation Of Modified Fast Marching Algorithm In The Detection Of Fiber Crossing Using Diffusion Tensor Imaging Data ” , Iranian Journal Of Medical Physics, 2007.

60- A Boroomand, A Ahmadian, MA Oghabian, “Improving the Performance of ICA Algorithm for fMRI Simulated Data Analysis Using Temporal and Spatial Filters in the Preprocessing Phase ”, Iranian Journal of Medical Physics, 2007.

61- Vahid Tavakoli, Alireza Ahmadian, Mohammad D. Abolhassani, "An evaluation of moment Based Optical Flow Techniques for Myocardial Motion Analysis in B-mode Echocardiography Images   " Journal of Technical Acoustics,  2007.

62- M. R. Ay, J. H. Bidgoli, S. Sarkar, A. R. Ahmadian, "Automatic Segmentation of Oral Contrast

Enhanced CT Images for Artifact Free Attenuation Correction in PET/CT   "European Journal of Nuclear Medicine & Molecular Imaging, Vol. 34, , Oct 2007.

63- Tassilo Klein, Joerg Traub, Hubert Hautmann, Alireza Ahmadian,Nassir Navab, "Fiducial Free Registration Procedure for Navigated Bronchoscopy   " Lecture Notes in Computer Science (LNCS), Springer Link , 2007.

64- Mohammad S. Nambakhsh, A. Ahmadian, R.Dilmaghani, M.Ghavami, "A Blind EZW-based Watermarking of ECG signal into Medical Images   ", Iranian Journal of Medical Physics, 2006.

65- Alizadeh H., Abolhassani M.D. , Ahmadian A., Salimpour Y, "Study of denoising in TEOAE signals using an appropriate mother wavelet function" Journal of Audiology of Tehran University of Medical Science, Vol. 16, No.1 2007. pp 25-35. , 2007.

66- Farzad Younesi, N Riahi Alam,  Masoumeh Gity, Alireza Ahmadian, “Computer-Aided Mass Detection on Digitized Mammogram”, Iranian Journal of Radiology 4 · January 2007.

67- S. Falahieh Hamidpour, A. Ahmadian, R. Aghaeezadeh-zoroofi, M. A. Shabani samghabadi , “A Hybrid 3D Colon Segmentation Method Using Modified Geometric Deformable Models”, Iranian Journal of medical physics, Volume 4, Issue 1,2, June 2007, Page 19-30.

68-  Hejazi M., Abolhassani M. D., Ahmadian A., Frenz M., Jaeger M., Niederhauser J.J. and Amjadi A., "A Comparison of Laser-Ultrasound Detection System Sensitivity with a Broad-Band Ultrasonic Source for Biomedical Applications" Archives of Medical Research, Volume 37, Issue 3, Pages 322-327 , April 2006.

69- Kavous Firouznia , Mohammadreza Negahdar , Alireza Ahmadian ,  Nassir Navab , “Automated Path Planning Algorithm for Virtual Broncoscopy”, Journal of Medical Physics · January 2006.

70- M.S.Nambakhsh, A.Ahmadian, M.Ghavami, R.Dilmaghani, "A Novel Blind Watermarking of ECG Signals on Medical Images Using EZW Algorithm   " Iranian Journal of Medical Physics (IJMP), Vol.3, No.10 , Spring 2006.

71- J. Hasani Bidgoli, A. Ahmadian, S. Akhlaghpour, R. Aghazadeh Zoroufi, "An Efficient Colon Segmentation Technique Using a Two-stage Algorithm and Extracted Local Feature of Colonography Images   " Iranian Journal of Medical Physics,Vol.2,No.9 , Winter 2006.

72- M. Negahdar, A.Ahmadian, N.Navab, K.Firouznia , "Automated Path Planning Algorithm for Virtual Bronchoscopy   " Iranian Journal of Medical Physics (IJMP), Vol.3, No.11 , Summer 2006.

73- B. Sharif, A. Ahmadian, M.A. Oghabian, N. Izadi Mood, M.Khubdel, "Classification of Endometrial Images for Aiding the Diagnosis of Hyperplasia Using Logarithmic Gabor Wavelet" Iranian Journal of Medical Physics, Vol.3, No.10 , Spring 2006.

74- Abbasi M., Abolhassani M.D., Miranbeigi M. H., Ahmadian, A, "Discrimination of skin layers

from B-scan ultrasound images using feature matching & neuro-fuzzy classifier"Iranian Journal of Medical Physics, Vol. 2, No. 9, 2006, pp71-80 , 2006.

75- Karimifard, A. Ahmadian , M. Khoshnevisan, "Modeling Higher-Order Statistics of ECG Signals Using Hermitian Basis Functions to Aid Arrhythmia Detection" Iranian Journal of Medical Physics(IJMP), Vol.3,No.11 , Summer 2006.

76- A. Mostafa, A. Ahmadian, M. J. Abolhasani, M. Giti, "An Efficient Texture Classification Algorithm for liver sono images using Gabor Wavelet.   " Iranian Journal of Medical Physics, Vol. 2, No.7, pp67-76, Summer 2005.

77- Ahmadian A., Hedjazi M., Abolhassani M.D.,M.Frenz, M.Jaeger, J.Niederhauser, A.Amjadi, "Optical Stress Detection System for Forward-Mode of Photoacoustic Imaging" Iranian Journal of Medical Physics,Vol.2, No.6,3-12 , Spring 2005.

78-  Abolhassani M.D., Hejazi M., Ahmadian A., Amjadi A., "Sensitivity comparison of optical detection system, PVDF detection system, and PVDF needle hydrophone in a same acoustic field for optoacoustic tomography" Chinese Optics Letters, Vol. 3, No. 10 , Oct. 2005.

79- F. Bourbour H.B,M.J. Abolhasani, A. Ahmadian, "Study of Wavelet Based Speckle Reduction Methods For Ultrasound Images" Iranian Journal of Medical Physics, IJMP, Vol. 2,No. 6 , Spring 2005.

80- R. Dilmaghani, A. Ahmadian, M. Ghavami, A.H.Aghvami, "Progressive medical Image Transmission and Compression using wavelets" IEEE Signal processing Letters, Vol.11, No. 10, pp. 806-809 , Oct. 2004.

81- Joubin N. Tehrani, A.Ahmadian, N.Riahi, Dr Giti, "Detection of Suspicious Microcalcifications in digital mammography using fuzzy Logic and Wavelet Transform Coefficients" Iranian Journal of Medical Physics, Vol. 3, No. 3, pp23-28 , 2003.

82- Ahmadian A, Oghabian M A, Dilmaghani R, "Progressive Medical Image Transmission (PIT) Using Modified Embedded Zerotree Wavelet (EZW) Algorithm" Iranian J of Medical Physics, No 1 , Spring 2003.

83- Abolhassani M.D., Taki A., Ahmadian A, "Ultrasound Two Dimensional Array Transducer Modeling For Beam Optimization in Three Dimensional Imaging" Iranian Journal of Medical Physics,Vol.1, No.2, 2003.

84- A. Ahmadian, A.A. Baharth , "Orthogonal wavelets for Image transmission and Compression: Implementation and results" International symposium on optical science, engineering, and instrumentation, SPIE “Wavelet Application in Signal and Image Processing IV”. Vol. 2825, pp. 822-833 , August 1996 .

85- A.Ahmadian, A.A. Baharth, R.I. kitney , "Progressive Transmission of Echocardiography Images Using the Orthogonal Wavelet Transform" IEEE Computers in Cardiology, pp. 261-

264,Maryland , 1994

Conferences:

1. P Farnia, E Najafzadeh, B Makkiabadi, A Ahmadian, J Alirezaie, “Co-Sparse Analysis Model Based Image Registration to Compensate Brain Shift by Using Intra-Operative Ultrasound Imaging” 40th Annual International IEEE EMBS Conference, 2018, Accepted.

2. N Samadzadeh, Sh Azizi, A Ahmadian, M Abdolghaffar “Correcting Electromagnetic Tracker's Position Error Using Orientation Information Based on Hardy's Multi-Quadric Method”, 24th national and 2nd International Iranian Conference on Biomedical Engineering (ICBME) 2017.

3. A Mojtabavi, P Farnia, A Ahmadian, et al “An Efficient Speed Function for Segmentation of GBM in MRI Images Based on Level Set Method”, 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI 2017), Accepted.

4. P Farnia, B Makkiabadi, A Ahmadian, J Alirezaie .“Curvelet based residual complexity objective function for non-rigid registration of pre-operative MRI with intra-operative ultrasound images”, 38th Annual International IEEE EMBS Conference, 2016.

5. Najme Daemi, Alireza Ahmadian, et al “ Planning screw insertion trajectory in lumbar spinal fusion using pre-operative CT images ”, 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC),2015.

6. Aryan Khodabandeh, Javad Alirezaie, Paul S Babyn, Alireza Ahmadian, “ Computed tomography image denoising by learning to separate morphological diversity”, 38th International Conference on Telecommunications and Signal Processing (TSP), 2015.

7. Anuyogam Venkataraman, Javad Alirezaie, Paul S Babyn, Alireza Ahmadian, “ Multi dose Computed Tomography image fusion based on hybrid sparse methodology ”, 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC),2015.

8. M. Abdolghaffar, A. Ahmadian, N. Ayoobi, P. Farnia, T.Shabanian, N. Shafiei, and J. Alirezaie, “A Shape Based Rotation Invariant Method for Ultrasound-MR Image Registration: A Phantom Stud y ”, 36th Annual International IEEE EMBS Conference, Chicago, Illinois, USA, August 26-30, 2014, Accepted

9. P. Farnia, A. Ahmadian, T. Shabanian, J. Alirezaie, N. D. Serej, “A hybrid method for Non-rigid registration of Intra-operative Ultrasound Images with pre-operative MR images”, 36th Annual International IEEE EMBS Conference, Chicago, Illinois, USA, August 26-30, 2014, Accepted.

10. Venkataraman, A. Alirezaie, J. ; Babyn, P. ; Ahmadian, A.,”Medical image fusion based on joint sparse method”, Biomedical Engineering (MECBME), 2014 Middle East Conference on 17-20 Feb. 2014

11. S. Alimohammadi, J. H. Bidgoli, A. Ahmadian, “Ultrasound Probe Calibration with “V‟ Phantom”, 10th Anniversary Asian Conference on Computer Aided Surgery (ACCAS 2014).

12. Ehsan Eqlimi, Arman Eshaghi, Nader riyahi alam, Alireza Ahmadian, “ Wavelet Graphs on Mutual Information Functional Connectivity for MS Patients in Resting State fMRI ”, 20th Annual Meeting of the Organization for Human Brain Mapping (OHBM2014) in Hamburg, Germany.

13. N. Dadashi, A. Ahmadian, S. Kasaei, S. M. Sadr Hoseini, P. Farnia," Keypoint Detection Based on Dual-Tree Complex Wavelet Transform for Point Based Matching and Registration in Endoscopic Sinus Cavity Data”, CARS 2014, JUNE 25-28, 2014.

14. F. Nazem , A. Ahmadian, N. Dadashi Serj , P.Farniaa, M. Giti, "An efficient hybrid point based registration algorithm between intra-operative ultrasound images and preoperative CT images of liver: a phantom study" SPIE Medical Imaging 2013 , 9-14 February 2013 ,Lake Buena Vista (Orlando area), Florida USA.

15. Marzieh Ershad Langroodi, Alireza Ahmadian , Nassim Dadashi Seraj, Hooshang Saberi, Keyvan Amini, "Effect of Landmark Configuration on Target Registration Error for Vertebra: a phantom study" SPIE, Medical Imaging, 9 - 14 February 2013 .

16. A. Fathi Kazerooni , A. Ahmadian , H. Saberi , V. Asayesh, H. Saligheh Rad, "A Wavelet-Based Similarity Measure to register pre/intra-operative MR images of the brain" 16th International Conference on Image Processing, Computer Vision, & Pattern Recognition (IPCV'12), July 16-19, 2012.

17. A. Mirbagheri, M. A. Baniasad, F. Farahmand, S. Behzadipour, A. Ahmadian, “ Medical Robotics: State-of-the-Art Applications and Research Challenges”. International Conference on Electronic Health (ICEH 2012), Medical Council of Islamic Republic of Iran, November 29-30, 2012.

18. Anahita Fathi Kazerooni Alireza Ahmadian, Hooshang Saberi, Javad Alirezaie, Hamidreza Saligheh Rad, "An Efficient Algorithm For Registration Of Pre- And Intra- Operative Brain Mri Images To Correct Intensity Inhomogeneity" Information Science, Signal Processing and their Applications (ISSPA), 2012 11th International Conference on, 2-5 July 2012 .

19. Samaneh Alimohamadi , Parastoo Farnia , Javad Hasani Bidgoli , Alireza Ahmadian, "An Efficient Extraction of Frontal Bone Surface In Ultrasound Images with the Assistance of Diffusion Filters" 2012 IEEE MIC , 2012 IEEE MIC in Anaheim.

20. Marzieh Ershad, Alireza Ahmadian, Nassim Dadashi Seraj, Hooshang Saberi, "Automatic landmark detection in spine surface CT images for registration of pre to intra-operative data" International Conference on Electronic Health (ICEH), 2012 .

21. Mahdi Marsousi, Kaveh Abhari, Alireza Ahmadian, Javad Alirezaie, "left Ventricle Mass Extraction Utilizing A Multi-Step Probabilistic Approach"Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on, 25-30 March 2012.

22. Siyah Mansoory M, Ahmadian A, Gorgian Mohammadi A, Farnia P, "Mitral Valve Prolapse detection using landmark extraction from echocardiography sequences"EMBC.2012, 2012 Aug .

23. Parastoo Farnia, Alireza Ahmadian, Mahdi Sedighpoor, alireza khoshnevisan, Meysam Siyah Mansoory , "On the Performance of Improved ICP Algorithms for Registration of Intra-Ultrasound with Pre-MR Images; a Phantom Study" 34rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, (EMBC'12) to be held in Boston Marriott Copley Place, Boston, MA, USA, August 28 -September 1, 2012.

24. Parastoo Farnia, Alireza Ahmadian, Alireza Khoshnevisan, "The Effect of Segmentation Method on the Performance of Point Based Registration of Intra-Ultrasound with Pre-MR Images; A Phantom

Study" 16th International Conference on Image Processing, Computer Vision, & Pattern Recognition (IPCV'12), July 16-19, 2012 .

25. Samaneh Alimohamad, Parastoo Farnia, Javad Hasani Bidgoli1, Alireza Ahmadian1, Javad Alirezaie 3, "An Efficient Extraction of Bone Surface Using Diffusion Filters in Ultrasound Images of Frontal Bones'" The 11th International Conference on Information Sciences, Signal Processing and their Applications,2011.

26. Parastoo Farnia, Alireza Ahmadian*, Alireza Khoshnevisan, AmirHossein Jaberzadeh, Nasim Dadashi Serej, Anahita F. Kazerooni,, "An efficient Point Based Registration of Intra-operative Ultrasound images with MR images for computation of brain shift; a Phantom Study" 33rd Annual International IEEE EMBS Conference, August 30 - September 3, 2011.

27. Hossein Y. Banaem, Alireza Ahmadian, Hooshangh Saberi,Davood Khodadad,Alireza Daneshmehr, "Brain tumor modeling: glioma growth and int chemotherapy"International Conference on Graphic and Image Processing, Saturday 1 October 2011 .

28. Davood khodadad,Alireza Ahmadian, Mohammadreza Ay,Armaghan Fard Esfahani, Hossein Yousefi Banaem,Habib Zaidi, "B-spline based Free Form Deformation Thoracic non-rigid registration of CT and PET images" International confrence on graphic and image processing (ICGIP 2011).

29. A. Akbarzadeh, M.R. Ay, A. Ahmadian, N. Riahi Alam,H. Zaidi, " Impact of Using Different Tissue Classes on the Accuracy of MR-based Attenuation Correction in PET-MRI"Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), IEEE , November 4, 2011.

30. Anahita Fathi Kazerooni, Alireza Ahmadian, Nassim Dadashi Serej, Hamidreza Saligheh Rad, Hooshang Saberi, Hossein Yousefi, Parastoo Farnia, "Segmentation of Brain Tumors in MRI Images Using Multi-scale Gradient Vector Flow" 33rd Annual International IEEE EMBS Conference, August 30 - September 3, 2011.

31. Mehran Baboli, Azadeh Sharafi, Alireza Ahmadian, et al, “ An accurate and robust algorithm for detection of heart and respiration rates using an impulse based UWB signal ”, Biomedical and Pharmaceutical Engineering, 2009.

32. Mahdi Marsousi, Javad Alirezaie ,Damon Bazargan, Alireza Ahmadian, Armen Kocharian, "Active Ellipse Model and Automatic Chamber detection in Apical Views of Echocardiography Images" The International Conference on Image Processing, September 26-29, 2010

33. Fahimeh Mohagheghian, A. Ahmadian, J. Alirezaie, H. Saberi, "Atlas-based Segmentation of MR Brain Images via Symmetric Image Registration" The International Conference on Image Processing, September 26-29, 2010

34. F. Yousefi Rizi, H. Ahmadi Noubari, A. Ahmadian, J. Alirezaie, "Biomedical Image Denoising using Dual Tree Complex Wavelet Transform" The International Conference on Image Processing, September 26-29, 2010

35. Mahdi Marsousi, Javad Alirezaie, Alireza Ahmadian, Armen Kocharian , "Segmenting Echocardiography Images using B-Spline Snake and Active Ellipse Model" 32nd Annual International Conference of the IEEE EMBS Buenos Aires, Argentina, August 31 - September 4, 2010.

36. Fahimeh mohagheghian-Alireza Ahmadian-, "Symmetric Multi-scale image registration" 32 nd annual international conference of the IEEE EMBS Buenos Aires ,Argentina August 31-september 2010.

37. Mehran Baboli, Azadeh Sharafi, Alireza Ahmadian, and Saeed KarimiFard, "A Framework for Simulation of UWB System for Heart Rate Detection" 2nd International Conference on Biomedical and Pharmaceutical , 2-4 December 2009 Biopolis, Singapore

38. Mehran Baboli, Seyed Ali Ghorashi, Namdar Saniei, Alireza Ahmadian, "A New Wavelet Based Algorithm for Estimating Respiratory Motion Rate Using UWB Radar" 2nd International Conference on Biomedical and Pharmaceutical, 2-4 December 2009

39. Ershad Sharifahmadian , Alireza Ahmadian, "Adaptive Signal Processing Algorithm for Remote Detection of Heart Rate (HR) Using Ultra- ideband Waveforms based on Principal Component Analysis" 31st Annual International Conference of the IEEE EMBS, Minneapolis, Minnesota, USA,, September 2-6, 2009

40. M. Abdoli, M.R. Ay, A. Ahmadian and H. Zaidi, "Metal Artifact Reduction in CT-Based Attenuation Correction of PET Data Using the Virtual Sinogram Concept" The 3rd International Conference on Bioinformatics and Biomedical Engineering (IEEE iCBBE 2009), June 11th to 13th, 2009, Beijing, China.

41. Fereshteh Yousefi Rizi, Alireza Ahmadian, et al, “ An Efficient Airway Tree Segmentation Method Robust to Leakage Based on Shape Feature Optimization ”   , 4th European Conference of the International Federation for Medical and Biological Engineering, 2009.

42. M.R. Ay, A. Maleki, H. Ghadiri, P. Ghafarian, A. Ahmadian and H. Zaidi, "The Influence of X-ray Spectra Filtration on Image Quality and Patient Dose in the GE VCT 64-Slice Cardiac CT Scanner" The 3rd International Conference on Bioinformatics and Biomedical Engineering (IEEE iCBBE 2009), June 11th to 13th, 2009, Beijing, China.

43. Fereshteh Yousefi Rizi, Alireza Ahmadian,Nima Sahba, Vahid Tavakoli,Emad Fatemizadeh, "A Hybrid Fuzzy Based Algorithm for 3D Human Airway Segmentation" The 2nd International Conference on Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008, 2008

44.  M. Abdoli, M.R Ay , A. Ahmadian, N. Sahba and H. Zaidi , "A novel approach for reducing dental filling artefacts in CT-based attenuation correction of head and neck oncologic PET/CT data" 4th European Congress of the International Federation of Medical and Biological Engineering, Antwerp, Belgium, 23-27 November 2008 ECIFMBE 2008.

45. Tavakoli V., Sahba N., Ahmadian A, "Adaptive Multi-resolution myocardial Motion Analysis of B-Mode Echocardiography Images using Combined Local/Global Optical Flow"Proceeding of 2nd International Conference on Bioinformatics and Biomedical Engineering, May 16-18 2008.

46. Fereshteh Yousefi Rizi, Alireza Ahmadian, et al, “ An Optimization Basel Approach Embedded in a Fuzzy Connectivity Algorithm for Airway Tree segmentation ”, IEEE Engineering in Medicine and Biology Society. Conference 2008.

47. J.H. Bidgoli , Fereshteh Y. Rizi, A. Ahmadian, "An Automatic Colonic Polyp Detection Method Based on Global Normal Convergence Approaches" Submitted to the 4th International Conferecne on Biomedical Engineering, Biomed 2008, Malaysia., 2008 .

48. Nima Sahba, Vahid Tavakoli, Hamid Behnam,  Alireza Ahmadian, et al, “An Optimized Two-Stage Method for Ultrasound Breast Image Compression”, 4th Kuala Lumpur International Conference on Biomedical Engineering 2008.

49. Fereshteh Y. Rizi, J.H. Bidgoli, A. Ahmadian, J. Alirezaie, "An Efficient Fuzzy Connectivity Method for Airway Tree Segmentation Using Fuzzy C-mean Algorithm" submitted to the 4th International Conference on Biomedical Engineering, Biomed 2008, Malaysia. , 2008.

50. Mohammad D. Abolhassani,Yousef Salimpour,Alireza Ahmadian,Vahid Tavakoli, "Design of an Optimized Mother Wavelet Function for TEOAE Signal Denoising" The 2nd International Conference on Bioinformatics and biomedical Engineering, may 16-18 ,2008 .

51. Bahram M Mehrabani, Vahid Tavakoli, Mohammadjavad Abolhassani, Alireza Ahmadian, “An Efficient Temperature Estimation Using Optical-Flow in Ultrasound B-Mode Digital Images”, IEEE Engineering in Medicine and Biology Society. Conference 2008.

52.  Fereshteh Y. Rizi, A. Ahmadian, J. Alirezaie, N. Sahba, V. Tavakkoli, E. Fatemizadeh,N. Rezaie, "A Hybrid Fuzzy Based Algorithm for 3D Human Airway Trees Segmentation" The 2nd International Conference on Bioinformatics and Biomedical Engineering, Shanghai, China, 2007.

53. R. Dilmaghani, A. Ahmadian, M. Ghavami, "A matrix representation to increase the resolution of a Region of Interest (ROI) for medical images   " 16th IST Mobile and Wireless Communications Volume 1-5 July., 2007.

54. N. Sahba, A. Ahmaian, V. Tavakoli, N. R. Alam, F. Y. Rizi, M. Giti , "A Multi-Stage Hybrid Method for Mammography Mass Detection" The 2nd International Conference on Bioinformatics and Biomedical Engineering ICBBE2008, Shanghai, China, 2007.

55. Boroomand, A.Ahmadian, M. A. Oghabian,J. Alirezaie, C.Beckman, "An Efficient Hybrid Wavelet-ICA algorithm for Analyzing Simulated fMRI Data in Noisy Environm" The 7th IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2007, Dec. 15-18, Cairo, Egypt., 2007

56. A. Ahmadian, S. Karimifard, H. Sadoughi, M. Abdoli , "An Efficient Piecewise Modeling of ECG Signals Based on Hermitian Basis Functions" Proceedings of the 29th Annual International Conference of the IEEE EMBS Cité Internationale, Lyon, France, August 23-26, 2007

57. S.Sh.F.Hamidpour, A.Ahmadian, J.H.bidgoli, R.A.Zoroofi, "Automatic Segmentation of Colonic Boundaries in CT Scan Images Using Geometric Deformable Model" 4th Iranian Conference on Machine Vision and Image Processing, Mashhad, 14-15 Feb 2007.

58.  M.R. Ay, J.H. Bidgoli, S. Sarkar and A. Ahmadian. , "Automatic Segmentation of Oral Contrast Enhanced CT Images for Artifact Free Attenuation Correction in PET/CT" Oral presentation at the European Association of Nuclear Medicine Annual Congress, 13-19 October 2007, Copenhagen, Denmark. Eur J Nucl Med Mol Imaging, Vol. 34, Supple 2, S115. ,

59. J.H. Bidgoli, M.R. Ay, S. Sarkar, A. Ahmadian, H. Zaidi, "Correction of Oral Contrast Artifacts in CT- Based Attenuation Correction of PET Images Using an Automated Segmentation

Algorithm   " IEEE Nuclear Science Symposium Conference, 2007.

60. S. Zarei Mahmoodabadi, Alireza Ahmadian, Mohammadjavad Abolhassani, “ECG Arrhythmia Detection Using Fuzzy Classifiers”, Fuzzy Information Processing Society, 2007.

61. F. Dargi, M.A.Oghabian, A.Ahmadian, H.Soltanian Zadeh, M.Zarei, "Diffusion Tenor Digital Phantom for crossing Fibers Detection" 4th Iranian Conference on Machine Vision and Image Processing, Mashhad, 14-15 Feb 2007.

62. Sh. F. Hamidpour, A. Ahmadian, R.A Zoroofi, J.H. Bidgoli, "Hybrid Segmentation of Colon Boundaries in CT Images Based on Geometric Deformable Model   " The IEEE International Conference on Signal Processing and Communication, ICSPC07,24-27 Dubai, UAE, 2007.

63. F. Dargi, M. A. Oghabian, A. Ahmadian,H. Soltanian Zadeh, M. Zarei, and A. Boroomand, "Modified Fast Marching Tractography Algorithm and Its Ability to Detect Fiber Crossing" Proceedings of the 29th Annual International Conference of the IEEE EMBS Cité Internationale, Lyon, France , August 23-26, 2007.

64. S. Karimifard, A. Ahmadian, "Morphological Heart Arrhythmia Classification Using Hermitian Model of Higher-Order Statistics" Proceedings of the 29th Annual International Conference of the IEEE EMBS Cité International, Lyon, France, August 23-26, 2007.

65. J.H.Bidgoli, A. Ahmadian, "A Multi-Stage Approach for CT Colon Image Segmentation" 1st Iranian-German Workshop on Medical Engineering, Munich, 2006 September 8-15.

66. M.S. Nambakhsh , A.Ahmadian , M.Ghavami, R.Dilmaghani,, "A novel blind Watermarking of ECG signals on medical images using EZW algorithm" Proceeding of IEEE Engineering in Medicine and Biology 28th Annual Conference New York, USA, 2006.

67. S. Karimi-Fard, A. Ahmadian, M. Khoshnevisan, "Morphological Heart Arrhythmia Detection Using Hermitian Basis Functions and kNN Classifier" Proceeding of IEEE Engineering in Medicine and Biology 28th Annual Conference New York, USA , 2006.

68. M. Negahdar, A. Ahmadian, N. Navab, K. Firouznia, "Path Planning for Virtual Bronchoscopy" Proceeding of IEEE Engineering in Medicine and Biology 28th Annual Conference New York, USA , 2006.

69. M.R.Negahdar, A.Ahmadian, N.Navab,K.Firouznia, "Stiff and Efficient Middle Axis Extraction of Airways for Virtual Bronchoscopy" first International Symposium on Telemedicine and Electronic Health,Tehran, Iran, 1-2 Nov 2006

70. A. Ahmadian, A. Mostafa, , M. D. Abolhassani, Y. Salimpour, "A texture classification method for diffused liver diseases using Gabor wavelets   " Proceeding of IEEE Engineering in Medicine and Biology 27th Annual Conference Shanghai, 2005

71. J. H. Bidgoli, A. Ahmadian, S. Akhlaghpor, N. R. Alam, S. Z. Mahmodabadi, "An Efficient Colon Segmentation method for Oral Contrast-Enhanced CT Colonography" Proceedings of the 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference Shanghai, China, September 1-4, 2005

72. S. Z. Mahmoodabadi, A. Ahmadian, M. D. Abolhasani, M. Eslami, J. H. Bidgoli, "ECG Feature

Extraction Based on Multiresolution Wavelet Transform" Proceedings of the 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference Shanghai, China, September 1-4, 2005.

73. S. Z. Mahmoodabadi, A. Ahmadian, M. D. Abolhasani, "ECG FEATURE EXTRACTION USING DAUBECHIES WAVELETS" Proceeding of the Fifth IASTED International Conference VISUALIZATION, IMAGING, AND IMAGE PROCESSING, Benidorm, Spain, September 7-9, 2005.

74. A. Taki, M.D. Abolhassani, A. Ahmadian, "Modeling of 2D array transducer for beam optimization in 3D Ultrasound Images" Proceeding of the IASTD International Conference Biomedical Engineering, Austria, Feb. 16-18, 2005.

75. Y.Salimpour, M.D. Abolhassani, A.Ahmadian, K.Barin, "MULTIRESOLUTION ANALYSIS OF TRANSIENT EVOKED OTOACOUSTIC EMISSION" Proceedings of the 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference Shanghai, China, September 1-4, 2005

76. B. Sharif, A. Ahmadian, M.O Oghabian, and N., Ezadi, "Texture Segmentation of Endometrial Images for Aiding Diagnosis of Hyperplasia   " IEEE Region 8 EUROCON 2005 conference, Belgrade , November 21-24, 2005

77. Ahmadian A., Mostafa A. Abolhassani M.D., Riahi Alam N, "A method for Texture Classification of Ultrasonic Liver Images based on Gabor Wavelet" International Conference on Signal Processing (icsp04), China, 2004

78. A. Ahmadian, A. Mostafa, M. D. Abolhassani, N. Riahi Alam, M. Gitti5 , "An efficient texture feature extraction method for classification of liver sonography based on Gabor Wavelet" MEDICON and HEALTH TELEMATICS 2004, Xth Mediterranean Conference On Medical and Biological Engineering, Italy, August 2004

79. N. Riyahi-Alam, A. Ahmadian, J. Nasehi Tehrani, M. Guiti, M. A. Oghabian, "Segmentation of Suspicious Clustered Microcalcifications on Digital Mammograms: using Fuzzy Logic and Wavelet Coefficients" International Conference on Signal Processing (icsp04), China, 2004

80. Ahmadian A., Mostafa, Abolhassani M.D., "A comparison of Wavelet Filters for Texture Classification" WC 2003, World Congress on Medical Physics and Biomedical Engineering, Sydney, Australia., 24-29 August 2003

81. A. Mostafa, A. Ahmadian, "An Efficient Texture Classification Algorithm using Gabor Wavelet" 25th Annual International Conference of the IEEE Engineering in Medicine & Biology Society Mexico, 2003

82. Salimpour Y. Abolhassani M.D., Ahmadian, "Automated Auditory Evoked Response Interpretation Based On Fuzzy Expert System" WC 2003, World Congress on Medical Physics and Biomedical Engineering, Sydney, Australia., 24-29 August 2003

83. E. Faramarzi, A. Ahmadian, A. Sayadian, "Image Indexing & Retrieval Using Gabor Wavelet & Legendre Moments" 25th Annual International Conference of the IEEE Engineering in Medicine & Biology Society Mexico, 2003

84. M.Oghabian , R.S. Dilmaghani , A.Ahmadian, "Investigation of Wavelet Filter Properties for Medical Image Applications" 2nd Conference on Machine Vision, Image Processing &

Applications, MVIP2003, Iran, 2003

85. R. Dilmaghani, M. Ghavami, A. Ahmadian, H.Aghvami, "Multi rate/resolution control in progressive medical image transmission for the Region of Interest (ROI) using EZW   "25th IEEE Proceedings on EMBS, Volume 1, Pages:818-820, Sept 2003

86. Dilmaghani, A. Ahmadian, M. Oghabian, "A Framework for progressive Medical Image Transmission and Compression" Proceedings of the 2nd Joint EMBS/BMES Conference, vol. 2, pp. 1025-1026 Houston, TX, USA, 23-26 , October 2002

87. R.S.Dilmaghani, Dr. A.Ahmadian, N.Maleki, "Choice of wavelet filters for medical image compression and approximation" Proceedings of the 2nd Joint EMBS/BMES Conference, vol. 2, pp. 1059-1060 Houston, USA, 23-26 , October 2002

88. A. Ahmadian, A. Bharath, F. Marvasti, "A Modified Embedded Zerotree Wavelet Algorithm for Medical Image Compression" International symposium on telecommunication, IST2001, pp. 89-93, Tehran, 2001

IT Skills:

C++ , Matlab. Image Processing Software: ITK/VTK, Khoros, AVS, and Midas • Operating Systems: Windows, Linux, Sun Solaris.