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Proceedings Paper

Real-Time Digital Video Recording System
Author(s): M. S. Van Lysel; W. C. Zarnstorff; J. C. Lancaster; C. A. Mistretta; J. T. Dobbins
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Paper Abstract

Image storage is a necessary consideration in a medical imaging system. Data generated by recently developed digital radiographic techniques may be stored on magnetic tape or disc in either analog or digital form. Video discs have desirable freeze frame and image sequencing properties allowing for flexible image manipulation and display. Whereas digital pre-processing has enabled excellent results to be obtained using analog storage, digital storage is ideal as far as bandwidth and noise properties are concerned. However, serial data rates of digital disc drives are limited to about 10 megabits per second, too slow for recording video information in real-time. Using a standard multi-platter magnetic disc drive we have constructed parallel read/write channels servicing sets of 9 or 10 surfaces simultaneously in order to achieve a data rate of 100 megabits per second. This permits storage of 815 512x512x9 bit images at 30 frames per second. Hardware configurations and applications of the real-time digital disc to subtraction angiography will be discussed.

Paper Details

Date Published: 4 November 1981
PDF: 7 pages
Proc. SPIE 0314, Digital Radiography, (4 November 1981); doi: 10.1117/12.933074
Show Author Affiliations
M. S. Van Lysel, University of Wisconsin Center for Health Sciences (United States)
W. C. Zarnstorff, University of Wisconsin Center for Health Sciences (United States)
J. C. Lancaster, University of Wisconsin Center for Health Sciences (United States)
C. A. Mistretta, University of Wisconsin Center for Health Sciences (United States)
J. T. Dobbins, University of Wisconsin Center for Health Sciences (United States)


Published in SPIE Proceedings Vol. 0314:
Digital Radiography
William R. Brody, Editor(s)

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