Real-Time Digital Video Recording System

M. S. Van Lysel; W. C. Zarnstorff; J. C. Lancaster; C. A. Mistretta; J. T. Dobbins III

doi:10.1117/12.933074

4 November 1981 Real-Time Digital Video Recording System

M. S. Van Lysel, W. C. Zarnstorff, J. C. Lancaster, C. A. Mistretta, J. T. Dobbins III

Proceedings Volume 0314, Digital Radiography; (1981) https://doi.org/10.1117/12.933074
Event: Conference on Digital Radiography, 1981, Palo Alto, United States

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.

Citation Download Citation

M. S. Van Lysel, W. C. Zarnstorff, J. C. Lancaster, C. A. Mistretta, and J. T. Dobbins III "Real-Time Digital Video Recording System", Proc. SPIE 0314, Digital Radiography, (4 November 1981); https://doi.org/10.1117/12.933074

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