ai in radiology tutorial 091817530pm - curaclouda brief history of computer vision 1959 1966 1989...
TRANSCRIPT
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AI in Healthcare Workshop
Canopy Partners Imaging Summit
September 2017
Raleigh, North Carolina
Ed Butler
Hanbo Chen, PhD
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Meet our Seattle team
Founding team’s story• Founding team: 10-year relationships• 15+ PhD’s with US Industry Experience• Academic and Industry Success
• GE• Siemens• NIH• Over 100 journal publications
Multidisciplinary• Medical Image Analysis• Deep Learning• Genomics/Bioinformatics• Regulatory Science• Communications• Healthcare experience
Global Perspective• Seattle, WA• Princeton, NJ• Beijing, China• Shenzhen, China
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Goals for this session
1. Practical applications of AI in Radiology
2. Workflow implications of AI 3. Getting started4. Computer vision & machine learning
Robot assistant at a hotel in Tokyo, July 2017
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Goal– relevant, useful AI, not this…..
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Hollywood and Generalized Machine Intelligence
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The practical AI we use every day
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Some practical AI uses in Radiology
• Urgent condition detection, egIntracranial hemorrhagePneumothorax Pulmonary embolism Intubation tube placement error
• Detailed notes communicated via worklist• Automated reporting• Quality Assurance
• Much more…..
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Workflow!
• Little workflow • Clinician task level: speed, accuracy
• Big workflow• Connecting the care team around the
patient
• Population level- Value Based Care• Building a “learning health system” • Attributing clinical outcomes from
value chain contributors
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Getting started in AI: Key decisions
Innovation Adoption Curve Ø Business priorities?Ø Competitive advantage strategy?
Strategic vs transactional approachesØ Influence AI deployment choicesØDevelop internal AI sophistication?ØLeverage data assets strategically?
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Yann LeCunLeNet to identify post
codes written on U.S. mails
A brief history of computer vision
1959 1966 1989 2012
Alex Krizhevsky, et al.AlexNet won ImageNet
challenging.
VS
MIT Summer Vision Project:1st year of computer vision
Hubel & Wiesel
1st FDA approval for clinical cloud-
based deep learning (Arterys)
Model-driven heuristic
algorithms.
2016
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Computer vision and machine learning
IntracranialHemorrhage
Conv Conv Conv
AI module invoked
FC FC FCClassification
Brain? YesICH? Yes
Results returned
Deep convolutional neural network inspired by brain structure
V1 V2 V3 decision
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Key concepts in computer vision
1. Classification: • Is it x? (y or n)
2. Segmentation: • Identify regions of interest
3. Regression: • Quantitative measurements
4. Image Captioning: • From digital images to words Is it ICH? Yes!
Bleeding area size: 5 cm2
This patient has bleeding in left parietal cortex.
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Deep learning example: ICH detection
• 3302 brain CT images were collected (multiple image centers and different scanners).
• Achieved 98.1% accuracy, 98.3% sensitivity, 97.6% specificity in detecting ICH cases.
• Performance is close to the blind annotation by other 2 radiologists (96.6% accuracy).
• Achieved 95.8% accuracy in classifying 8 identical bleeding regions (e.g subdural, subarachnoid).
• Automatically highlight potential bleeding areas (weak supervised learning).
Brain CT Scan Automatically detected ICH condition heat map
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Session review
üPractical applications• Urgent condition detection• Automated findings/reporting
üWorkflow implications• Little workflow, Big workflow, Aggregate workflow (pop health)
üGetting started in AI• Technology adoption curve positioning• AI Supplier models: strategic v consumer
üComputer vision key concepts• Classification, Segmentation• Regression, Captioning• Machine learning approaches• Example: AI Module for ICH Detection
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Thank You!
Questions?
Ed Butler, VP Corporate [email protected]
Hanbo Chen, PhD Research [email protected]
https://curacloud.net