Title

Reading and decision aids for improved accuracy and standardization of mammographic diagnosis

UMMS Affiliation

Department of Radiology

Publication Date

9-1-1992

Document Type

Article

Subjects

Humans; Mammography; ROC Curve

Disciplines

Life Sciences | Medicine and Health Sciences

Abstract

Image-reading and decision aids were designed to improve the accuracy of mammogram interpretation. The reading aid was a list of diagnostic radiographic features and scales for quantification of each feature. The decision aid, a computer program, converted the reader's scaled values, weighted for predictive power, into an advisory estimate of the probability of malignancy. The features were identified and their importance was assigned in four steps: (a) interviews of five expert readers to establish an initial set of features, (b) perceptual tests to refine the feature set, (c) a consensus meeting to refine this set and establish nomenclature and scales, and (d) the expert's scaling of each feature in a set of 150 mammograms. Those scaled judgments were analyzed to provide the final list of features and their relative importance and to program the computer decision aid. To test the enhancement effect, six other radiologists interpreted a different set of mammograms without, and later with, the two aids. Receiver operating characteristic analysis showed a gain of approximately 0.05 in sensitivity or specificity when the other value remained at 0.85. In a subset of the more difficult cases, the enhancement effect was approximately 0.15 in either sensitivity or specificity.

Rights and Permissions

Citation: Radiology. 1992 Sep;184(3):619-22.

Related Resources

Link to Article in PubMed

Journal/Book/Conference Title

Radiology

PubMed ID

1509042