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Proceedings Paper

PACS subsystems performance: centralized versus distributive
Author(s): Albert W. K. Wong; Shyhliang A. Lou; H. K. Huang
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Paper Abstract

We studied the performance characteristics of the acquisition and display subsystems of a clinical picture archiving and communication system (PACS). The PACS was configured to a centralized model and a distributed model. The performance of each subsystem in the two models were measured and compared. In both models, a control computer was designated to direct the flow of image data from the acquisition subsystem to the display subsystem so that performance of these two subsystems can be separately measured. Two image modalities, magnetic resonance imaging (MRI) and computed tomography (CT), were selected for the performance study. Approximately 100 gigabytes of image data from 3 MR scanners and 3 CT scanners were analyzed. The performance of the acquisition subsystem was measured in terms of the delivery time of an individual image file from an acquisition computer to the control computer. The performance of the display subsystem was measured in terms of the delivery time of an individual image file from the control computer to a display unit. Results showed that the centralized PACS model had better control and required less maintenance than the distributed PACS model. However, the performance of a centralized model degraded significantly when more input (radiologic imaging modalities) or output (display station) devices were encountered.

Paper Details

Date Published: 8 September 1993
PDF: 7 pages
Proc. SPIE 1899, Medical Imaging 1993: PACS Design and Evaluation, (8 September 1993); doi: 10.1117/12.152894
Show Author Affiliations
Albert W. K. Wong, Univ. of California/San Francisco (United States)
Shyhliang A. Lou, Univ. of California/San Francisco (United States)
H. K. Huang, Univ. of California/San Francisco (United States)


Published in SPIE Proceedings Vol. 1899:
Medical Imaging 1993: PACS Design and Evaluation
R. Gilbert Jost, Editor(s)

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