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Lump detection in simulated human breasts |
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| Authors: | Calvin K. Adams Deborah C. Hall H. S. Pennypacker Mark Kane Goldstein Larry L. Hench Michael C. Madden Gerald H. Stein A. Charles Catania |
| Affiliation: | 1. Department of Ophthalmology, J-284, JHMHC, University of Florida, 32610, Gainesville, Florida 2. Department of Psychology, University of Florida, 32601, Gainesville, Florida 3. V.A. Hospital, 32601, Gainesville, Florida 4. Department of Materials Science and Engineering, University of Florida, 32601, Gainesville, Florida 5. Department of Medicine, University of Florida, Gainesville, USA 6. Department of Psychology, University of Maryland Baltimore County, 21201, Baltimore, Maryland |
| Abstract: | Sixteen observers palpated silicone models of human breasts containing lumps 1.6-12.1 mm in diameter. Detectability depended on the size of the lump, producing a systematic psychometric function. In eight observers who participated in three or more sessions, performance improved with practice, with most improvement occurring within one or two 26-trial sessions. Three-week retention measures disclosed no appreciable decrease in performance, but a significant correlation was found between the number of lumps detected and duration of trial (p < .01). There was no difference in performance between four observers who used their preferred hands and four observers who used their nonpreferred hands. These data establish that examination of breast models for the detection of lumps simulating cancer is a task amenable to experimental analysis. |
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