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Digital archive system for radiologic images

A W Wong1, H K Huang, R L Arenson

  • 1Department of Radiology, University of California, San Francisco 94143-0628.

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|September 1, 1994
PubMed
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This study presents a new picture archiving and communication system (PACS) archive that uses multiple storage media and a dual network to speed up access to patient images. The system optimizes retrieval times for both current and historical medical images.

Area of Science:

  • Medical Imaging
  • Health Informatics
  • Computer Science

Background:

  • Efficient access to patient images is crucial for clinical review within picture archiving and communication systems (PACS).
  • Existing PACS archive systems face challenges in optimizing access times for both current and historical medical imaging data.

Purpose of the Study:

  • To develop and evaluate a second-generation archive system for a departmental PACS.
  • To optimize image access time for both current and historical images.

Main Methods:

  • Implemented a composite staging mechanism utilizing magnetic disks, erasable magneto-optical disks, and write-once-read-many (WORM) disks.
  • Employed a two-tiered communication network: standard Ethernet and a gigabit fiberoptic UltraNet.
  • Integrated features such as multiple optical drives, robotic arms, a stacking mechanism, pre-fetch, studies grouping, platter management, and job-prioritizing control.

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Main Results:

  • The system archives 1.5 Gbytes of radiologic images daily from various imaging modalities.
  • Concurrent archival and retrieval operations are supported.
  • Minimized on-line image retrieval workload and network traffic through pre-fetching.
  • Optimized retrieval of patient images from multiple examinations.
  • Reduced waiting times for radiologists and referring physicians.

Conclusions:

  • The developed second-generation PACS archive system significantly optimizes access times for clinical image review.
  • The system's architecture, featuring composite staging and a dual network, is suitable for large-scale PACS serving clinical and research staff.