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Proceedings Paper

On-line performance characteristics of a radiology PACS
Author(s): Albert W. K. Wong; Mansur Loloyan; Shyhliang A. Lou; H. K. Huang
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Paper Abstract

We have experienced that system reliability and performance become primary concerns when we moved our PACS from a research and development laboratory to a clinical environment. Providing consistent uptime builds user confidence and fast service accelerates system acceptance. The fault-tolerant mechanism implemented in our PACS has minimized system downtime. This paper considers the performance issues of an on-line multimodal PACS. The intent of conducting performance measurements on individual PACS components such as the radiological imaging devices, archive devices, host computers, and communication networks is to compare the throughput rates of these components in a real-time clinical environment as a basis of evaluating the overall throughput of a PACS system. Our primary goal is to identify the major factors that degrade the performance of a PACS, and to establish new strategies so that fast service with minimal delay is provided to the clinic. Approximately 200-Gbyte data transactions including CT, MR and CR images from our PACS were analyzed. Results showed that PACS throughput was limited by two major factors: (1) low-speed data interface used in the radiological imaging devices and archive devices; (2) network degradation due to heavy network traffic. We concluded that PACS throughput could be improved by well- designed network architecture and image-routing strategy. However, device-dependent low- speed data interface limited PACS performance.

Paper Details

Date Published: 1 July 1992
PDF: 10 pages
Proc. SPIE 1654, Medical Imaging VI: PACS Design and Evaluation, (1 July 1992); doi: 10.1117/12.60255
Show Author Affiliations
Albert W. K. Wong, UCLA School of Medicine (United States)
Mansur Loloyan, UCLA School of Medicine (United States)
Shyhliang A. Lou, UCLA School of Medicine (United States)
H. K. Huang, UCLA School of Medicine (United States)

Published in SPIE Proceedings Vol. 1654:
Medical Imaging VI: PACS Design and Evaluation
R. Gilbert Jost M.D., Editor(s)

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