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Proceedings Paper

Implementation of a high-resolution workstation for primary diagnosis of projection radiography images
Author(s): Walter F. Good; John M. Herron; Glenn S. Maitz; David Gur; Stephen L. Miller; William H. Straub; Carl R. Fuhrman
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Paper Abstract

We designed and implemented a high-resolution video workstation as the central hardware component in a comprehensive multi-project program comparing the use of digital and film modalities. The workstation utilizes a 1.8 GByte real-time disk (RCI) capable of storing 400 full-resolution images and two Tektronix (GMA251) display controllers with 19" monitors (GMA2O2). The display is configured in a portrait format with a resolution of 1536 x 2048 x 8 bit, and operates at 75 Hz in a noninterlaced mode. Transmission of data through a 12 to 8 bit lookup table into the display controllers occurs at 20 MBytes/second (.35 seconds per image). The workstation allows easy use of brightness (level) and contrast (window) to be manipulated with a trackball, and various processing options can be selected using push buttons. Display of any of the 400 images is also performed at 20MBytes/sec (.35 sec/image). A separate text display provides for the automatic display of patient history data and for a scoring form through which readers can interact with the system by means of a computer mouse. In addition, the workstation provides for the randomization of cases and for the immediate entry of diagnostic responses into a master database. Over the past year this workstation has been used for over 10,000 readings in diagnostic studies related to 1) image resolution; 2) film vs. soft display; 3) incorporation of patient history data into the reading process; and 4) usefulness of image processing.

Paper Details

Date Published: 1 August 1990
PDF: 6 pages
Proc. SPIE 1234, Medical Imaging IV: PACS Systems Design and Evaluation, (1 August 1990); doi: 10.1117/12.18950
Show Author Affiliations
Walter F. Good, Univ. of Pittsburgh School of Medicine (United States)
John M. Herron, Univ. of Pittsburgh School of Medicine (United States)
Glenn S. Maitz, Univ. of Pittsburgh School of Medicine (United States)
David Gur, Univ. of Pittsburgh School of Medicine (United States)
Stephen L. Miller, Univ. of Pittsburgh School of Medicine (United States)
William H. Straub, Univ. of Pittsburgh School of Medicine (United States)
Carl R. Fuhrman, Univ. of Pittsburgh School of Medicine (United States)


Published in SPIE Proceedings Vol. 1234:
Medical Imaging IV: PACS Systems Design and Evaluation
Samuel J. Dwyer; R. Gilbert Jost, Editor(s)

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