The use of image processing to enhance image information content is also being investigated 7, 8, 9. Questions regarding the diagnostic efficacy of PACS workstations (video or hard copy) are being studied at a number of institutions 4, 5, 6. Since many workstations are required, very powerful workstations tend to escalate the cost of a PACS. This criticality stems from the workstation’s large variance in user requirements and its apparent inadequacy to compete with film as a low-cost display medium. It is generally accepted that one of the more critical components of a viable PACS is the workstation 2, 3. PICTURE ARCHIVING AND COMMUNICATION SYSTEMS (PACS) are expected eventually to replace most radiographic film 1. Yet much careful study is needed before PACS workstations will be fully integrated into radiology departments. Standards such as the American College of Radiology/National Electrical Manufacturers’ Association Digital Imaging and Communication Standard are facilitating commercial applications. A consensus appears to be emerging concerning the requirements for the PACS workstation. Rule-based software allows simple physician interaction and speeds image display. The spatial and contrast resolutions required vary according to imaging modality, type of procedure, and class of user. Issues relating to image perception and the impact on physicians’ practice must be carefully considered. The digital workstation will be used by physicians to display these “soft-copy” images however, difficult technical challenges must be met for the workstation to compete successfully with the familiar viewbox. Picture archiving and communication systems (PACS) are expected to convert film-based radiology into a computer-based digital environment, with associated cost savings and improved physician communication.
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