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Optical Engineering

Enhancing recognition of lesions in radiographic images using perceptual feedback
Author(s): Elizabeth A. Krupinski; Calvin F. Nodine; Harold L. Kundel
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Paper Abstract

When radiologists search a medical x-ray image for an abnormality, their eyes often fixate and refixate the true target, dwelling on it for prolonged times, often without recognizing that they have discovered the object of search. Monitoring the eye position of the radiologist provides the x and y coordinates of the dwelling location. This location can be superimposed on the image and dynamically fed back to the radiologist for reevaluation. When this is done, the probability of recognizing and reporting an abnormality is shown to be enhanced significantly. An increase of 20% in observer performance is observed for radiologists searching chest images for tumors after receiving perceptual feedback compared to a second look without perceptual feedback. The truepositive rate increased and the false-positive rate decreased. Perceptual feedback represents a potentially significant technique for enhancing lesion recognition in radiology.]

Paper Details

Date Published: 1 March 1998
PDF: 6 pages
Opt. Eng. 37(3) doi: 10.1117/1.601914
Published in: Optical Engineering Volume 37, Issue 3
Show Author Affiliations
Elizabeth A. Krupinski, Health Sciences Ctr./Univ. of Arizona (United States)
Calvin F. Nodine, Univ. of Pennsylvania Medical Ctr. (United States)
Harold L. Kundel, Univ. of Pennsylvania Medical Ctr. (United States)

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