(HealthDay News) — Trained radiologists can identify abnormal mammograms in a half-second, according to a study published online Aug. 29 in the Proceedings of the National Academy of Sciences.

“Radiologists can have ‘hunches’ after a first look at a mammogram. We found that these hunches are based on something real in the images,” senior author Jeremy Wolfe, Ph.D., said. “It’s really striking that in the blink of an eye, an expert can pick up on something about that mammogram that indicates abnormality.”

Wolfe heads the Visual Attention Laboratory at Brigham and Women’s Hospital and is a professor of ophthalmology and radiology at Harvard Medical School, both in Boston. “Not only that, but they can detect something abnormal in the other breast, the breast that does not contain a lesion,” he added in a hospital news release.

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“These results suggest that there may be something in the nominally normal breast that looks abnormal and is detectable,” Wolfe said. “Together, these results suggest that radiologists may be picking up on some sort of early, global signal of abnormality that is unknown to us at this point.” Defining that signal could lead to development of better imaging tools and improved medical training.

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