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Proceedings Paper

Test of radiologist performance in interpreting bedside chest examinations on a workstation
Author(s): Matthew T. Freedman; Shih-Chung Benedict Lo; Martha C. Nelson; Kathleen Reagan; Steven C. Horii; Seong Ki Mun
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Paper Abstract

A book cassette containing both a conventional film-screen radiographic system (FR) and a phosphor storage radiographic plate (SR) was used to obtain simultaneous bedside chest images in 22 patients in the Post Operative Cardiac and Surgical Intensive Care Units (ICUs). Twenty-five potential findings of normal structures, lung and pleural disease, and life support devices were recorded for each image in a five point rating format. The FR images are all considered of good diagnostic quality. The original FR films, the laser digitized FR images (DF) displayed on a workstation (WS), and the SR images displayed on a WS were compared. The WS viewing was on a 1 K X 1.2 K, 8 bit monitor. Free adjustment of window level, window width, and black-white inversion was allowed. Magnification allowed access to the 2 K data set. ROC analysis supports the null hypothesis that there is no difference in the diagnostic yield of good quality bedside obtained FR, DF made from good quality FR viewed on a workstation, and SR viewed on a workstation. Analysis of the subset of interstitial and airspace edema indicated that readers gave higher scores for interstitial disease on the WS for both false positive and true positive findings.

Paper Details

Date Published: 1 May 1992
PDF: 17 pages
Proc. SPIE 1653, Medical Imaging VI: Image Capture, Formatting, and Display, (1 May 1992); doi: 10.1117/12.59494
Show Author Affiliations
Matthew T. Freedman, Georgetown Univ. Hospital (United States)
Shih-Chung Benedict Lo, Georgetown Univ. Hospital (United States)
Martha C. Nelson, Georgetown Univ. Hospital (United States)
Kathleen Reagan, Georgetown Univ. Hospital (United States)
Steven C. Horii, Georgetown Univ. Hospital (United States)
Seong Ki Mun, Georgetown Univ. Hospital (United States)


Published in SPIE Proceedings Vol. 1653:
Medical Imaging VI: Image Capture, Formatting, and Display
Yongmin Kim, Editor(s)

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