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Saturday, February 24, 2018

Computer Vision Assessing Cardiovascular Risk

From Google Research, an interesting application.  With considerable detail about the experimental approach.   Instructive.   Note its about risk rather than diagnosis.   Examples of retinal images.  Would like to see more medical /statistical commentary on the results.

Assessing Cardiovascular Risk Factors with Computer Vision
Posted by Lily Peng MD PhD, Product Manager, Google Brain Team 

Heart attacks, strokes and other cardiovascular (CV) diseases continue to be among the top public health issues. Assessing this risk is critical first step toward reducing the likelihood that a patient suffers a CV event in the future. To do this assessment, doctors take into account a variety of risk factors — some genetic (like age and sex), some with lifestyle components (like smoking and blood pressure). While most of these factors can be obtained by simply asking the patient, others factors, like cholesterol, require a blood draw. Doctors also take into account whether or not a patient has another disease, such as diabetes, which is associated with significantly increased risk of CV events. 

Recently, we’ve seen many examples [1–4] of how deep learning techniques can help to increase the accuracy of diagnoses for medical imaging, especially for diabetic eye disease. In “Prediction of Cardiovascular Risk Factors from Retinal Fundus Photographs via Deep Learning,” published in Nature Biomedical Engineering, we show that in addition to detecting eye disease, images of the eye can very accurately predict other indicators of CV health. This discovery is particularly exciting because it suggests we might discover even more ways to diagnose health issues from retinal images.  .... " 

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