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Proceedings Paper

Six-Second CT Imaging
Author(s): Fred Murphy
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Paper Abstract

The resources of radiology have been tremendously augmented by CT scanning. Developing from brain scanners, through slow body scanners, the present, third generation of fast whole-body CT scanners provide images of unprecedented detail and quantitative informa-tion content. The technological level required is high: precise mechanical alignment, efficient and linear multi-channel X-ray detectors, electronics of enormous dynamic range, a fast computer with large memory and special reconstruction hardware, flexible controls, and powerful data display and storage system. Performance must be evaluated carefully. The specification and measurement of X-ray density resolution and spatial resolution are straightforward, but optimization is tricky since they interact. Both, but more especially density resolution, tend to be limited by X-ray photon statistics. Because CT scanning is still a rapidly developing field, flexibility is perhaps the most important feature of a CT scanner. Some images from the first year of operation of the Varian 6-second CT scanner are shown.

Paper Details

Date Published: 23 December 1976
PDF: 5 pages
Proc. SPIE 0096, Application of Optical Instrumentation in Medicine V, (23 December 1976); doi: 10.1117/12.965424
Show Author Affiliations
Fred Murphy, Varian Associates (United States)


Published in SPIE Proceedings Vol. 0096:
Application of Optical Instrumentation in Medicine V
Robert K. Cacak; Paul L. Carson; Gregory Dubuque; Joel E. Gray; William R. Hendee; Raymond P. Rossi; Arthur Haus, Editor(s)

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