Receiver Operating Characteristic (ROC) Evaluation Of A Digital Viewing Station For Radiologists

Edward c. Carterette; H. K. Huang

doi:10.1117/12.975426

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12 June 1986 Receiver Operating Characteristic (ROC) Evaluation Of A Digital Viewing Station For Radiologists

Edward c. Carterette, H. K. Huang

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Proceedings Volume 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems; (1986) https://doi.org/10.1117/12.975426
Event: Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems (PACS IV) for Medical Applications, 1986, Newport Beach, CA, United States

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.

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Edward c. Carterette and H. K. Huang "Receiver Operating Characteristic (ROC) Evaluation Of A Digital Viewing Station For Radiologists", Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); https://doi.org/10.1117/12.975426

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