nile univerity mustafa a. alattar supervisors : dr. ahmed s. fahmy dr. nael f. osman
TRANSCRIPT
MyoCardial Segmentation Importance & Objectives
LV Inner-Wall Segmentation Stand Alone Methods Proposed Hybrid Technique Results
LV Outer-Wall Segmentation Problems of application of the Proposed Technique Proposed Solution + Refinement Results
Future Work
Provide highly accurate and reproducible measures of Ventricular volumes Regional function Ejection fraction Wall thickness and wall thickening Generation of accurate functional
images
Method1 : Active Contour Model (ACM)
Requires the minimization of the summation of 3 forms of energy:
Elasticity Energy
Curvature Energy
External Energy (related to the image; e.g. the edge or gradient)
Drawbacks of using ACM Takes a long time because the big number
of iteration needed to reach stability Needs expertise to assign the energies’
coefficients
Advantage: Preserving the smoothness of the contour
Advantage: takes short time in comparison with active contour(ACM)
Disadvantage: does not preserve spatial smoothing properties
Proposed Solution Our target is to reduce of the threshold value of
the region growing algorithm. Apply the region growing in an efficient way
using the reduced threshold value inside Overlapped Rotating Sectors .