A National Institutes of Health (NIH) doctor aims to revolutionize a notoriously unpleasant medical test to identify a leading cause of cancer death. Dr. Ronald M. Summers, M.D., Ph.D. pioneered the virtual colonoscopy. It uses non-invasive imaging similar to a CT scan to find polyps in the colon that are the precursor to cancer. "What I'm trying to do is develop alternatives that might be j...
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