JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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A signal-detection experiment measuring the effect of computer-aided detection on radiologists' performance.

PURPOSE: To evaluate how the specificity and sensitivity of computer-aided detection (CADe) algorithm outputs affected radiologists' diagnostic performances, the authors studied the effects of 25 simulated CADe algorithms with various sensitivities and specificities (from 60% to 100%).

METHODS: Six novice radiologists read 200 images that were produced by computer and randomly displayed on CRT, and their detection performances were evaluated with receiver operating characteristic analysis.

RESULTS: There were significant differences in performance among CADe types (p < 0.001).

DISCUSSION AND CONCLUSION: The overall accuracy of CADe outputs is the most significant factor affecting radiologists' performances in detection and interpretation of images. There is an approximately linear relationship between the sensitivity (specificity) of the CADe output and the reader's sensitivity (specificity), and the slope of reader sensitivity (specificity) as a linear function of CADe sensitivity (specificity) can be considered to be a positive number less than unity.

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