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13 July 1998 Acquisition and analysis of usage and data-flow statistics for a DICOM-compliant PACS
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This paper describes the acquisition of usage statistics and analysis of data-flow patterns for our DICOM-conformant PACS during its first year of operation. The system currently supports one MR, nine ultrasound, and three CT scanners, and has allowed our department to fully eliminate the production and use of film in these modalities. The aim was to not only aid in trouble-shooting, but to provide a means of examining usage patterns and quantifying data-flow and storage requirements to help identify where refinements should be focused. Of particular interest were statistics quantifying turn-around times for user-initiated transfers and retrieval from long-term storage; the quantities of data acquired, moved, retrieved and prefetched, (sorted by modality and anatomy); usage patterns of clinicians within the hospital, and the quantity of data accessed via a WWW interface to our PACS. The results have been instrumental in refining our physical network plan, modifying retrieval and transmission algorithms, and providing objective measures of the performance of our PACS. During the evolution of the system, the same data have allowed us to retrospectively examine whether certain modifications yielded improvements that were significant and whether expectations were met. The logging process continues since it is now relied upon as a tool for monitoring nearly all useful system parameters.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christopher J. Henri, Richard K. Rubin, Robert D. Cox, and Patrice M. Bret "Acquisition and analysis of usage and data-flow statistics for a DICOM-compliant PACS", Proc. SPIE 3339, Medical Imaging 1998: PACS Design and Evaluation: Engineering and Clinical Issues, (13 July 1998);


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