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Proceedings Paper

Receiver Operating Characteristic (ROC) Evaluation Of A Digital Viewing Station For Radiologists
Author(s): Edward c. Carterette; H. K. Huang
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Paper Abstract

We compared the diagnostic decision making accuracy of readers using a digital viewing station (DVS) with their accuracy using a conventional film alternator. The measure of accuracy was Az, the area under the ROC (Receiver Operating Characteristic). Five readers viewed 100 images of which 50 contained exactly one simulated nodule randomly located in the lungfield of a lung-chest phantom, and none of the other 50 contained any nodule. Each of the 100 images was seen in random order in each of three conditions: Conventional film (FLM), low-resolution DVS (LRD) 512 x 512 pixels, and high-resolution DVS (HRD) 1024 x 1024 pixels. ROC tests were based on a 6-point rating scale. Analysis of variance showed that there was no effect of readers on A, and a highly significant effect ofz viewing condition on A . Orthogonal comparisons showed that mean Azs of both FLM and HRD (1024) were significantly greater than mean A of LRD (512). However, mean Azs of film and HRD (1024) were not statistically different, a result which has important implications for the designing of diagnostic viewing facilities.

Paper Details

Date Published: 12 June 1986
PDF: 6 pages
Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); doi: 10.1117/12.975426
Show Author Affiliations
Edward c. Carterette, University of California Los Angeles (United States)
H. K. Huang, University of California Los Angeles (United States)


Published in SPIE Proceedings Vol. 0626:
Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems
Samuel J. Dwyer; Roger H. Schneider, Editor(s)

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