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Proceedings Paper

Fault tolerance techniques to assure data integrity in high-volume PACS image archives
Author(s): Yutao He; Lu J. Huang; Daniel J. Valentino; W. Keith Wingate; Algirdas Avizienis
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Paper Abstract

Picture archiving and communication systems (PACS) perform the systematic acquisition, archiving, and presentation of large quantities of radiological image and text data. In the UCLA Radiology PACS, for example, the volume of image data archived currently exceeds 2500 gigabytes. Furthermore, the distributed heterogeneous PACS is expected to have near real-time response, be continuously available, and assure the integrity and privacy of patient data. The off-the-shelf subsystems that compose the current PACS cannot meet these expectations; therefore fault tolerance techniques had to be incorporated into the system. This paper is to report our first-step efforts towards the goal and is organized as follows: First we discuss data integrity and identify fault classes under the PACS operational environment, then we describe auditing and accounting schemes developed for error-detection and analyze operational data collected. Finally, we outline plans for future research.

Paper Details

Date Published: 12 May 1995
PDF: 9 pages
Proc. SPIE 2435, Medical Imaging 1995: PACS Design and Evaluation: Engineering and Clinical Issues, (12 May 1995); doi: 10.1117/12.208799
Show Author Affiliations
Yutao He, Univ. of California/Los Angeles (United States)
Lu J. Huang, UCLA School of Medicine (United States)
Daniel J. Valentino, UCLA School of Medicine (United States)
W. Keith Wingate, UCLA School of Medicine (United States)
Algirdas Avizienis, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 2435:
Medical Imaging 1995: PACS Design and Evaluation: Engineering and Clinical Issues
R. Gilbert Jost; Samuel J. Dwyer, Editor(s)

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