Share Email Print
cover

Proceedings Paper

Preprocessing X-Ray Transmission Data In CT Scanning
Author(s): Michael J. Dennis; Robert G. Waggener; William D. McDavid; William H. Payne; Victor J. Sank
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

While the reconstruction algorithm utilized in computerized tomography (CT) is important, the overall performance of the system is limited by the quality of the measured transmission data which is used as the basis for the reconstruction process. If the projection values derived from the measured data do not adequately represent the line integrals of the linear attenuation coefficients within the slice being scanned, even a perfect reconstruction algorithm will give rise to a distorted image. Phenomena which tend to deteriorate the quality of the measured data, and hence the final image, include the effective finite dimensions of the scanning aperture, distortions introduced by the detector system such as afterglow, and nonlinearities related to the spectral distribution of x-ray photons used in scanning. Computer methods of preprocessing the x-ray transmission data to minimize these distortions are discussed and illustrated.

Paper Details

Date Published: 23 December 1976
PDF: 7 pages
Proc. SPIE 0096, Application of Optical Instrumentation in Medicine V, (23 December 1976); doi: 10.1117/12.965402
Show Author Affiliations
Michael J. Dennis, University of Texas Health Science Center (United States)
Robert G. Waggener, University of Texas Health Science Center (United States)
William D. McDavid, University of Texas Health Science Center (United States)
William H. Payne, University of Texas Health Science Center (United States)
Victor J. Sank, University of Texas Health Science Center (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)

© SPIE. Terms of Use
Back to Top