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Proceedings Paper

Signal-to-Noise Frequency Analysis of CT Systems
Author(s): Dominic J. Heuscher; Carl J. Brunnett
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Paper Abstract

A theory is presented which analyzes the performance of a computerized tomography system as a detection system given the detector geometry, optics, and reconstruction algorithms. The algorithmic effects are seperated from the intrinsic signal-to-noise frequency characteristics of the acquired data. This allows one to: (1) Compare the potential image quality that can be achieved by different CT systems independent of the reconstruction algorithm applied. (2) Predict the performance of new detector configurations. (3) Design the appropriate reconstruction algorithms to achieve the desired clinical results on a given scanner. Examples will be given of how different detector geometries can be compared using this theory and how specific reconstruction filters can be designed given both the scanner characteristics and desired image quality parameters.

Paper Details

Date Published: 1 May 1989
PDF: 13 pages
Proc. SPIE 1090, Medical Imaging III: Image Formation, (1 May 1989); doi: 10.1117/12.953196
Show Author Affiliations
Dominic J. Heuscher, Picker International (United States)
Carl J. Brunnett, Picker International (United States)


Published in SPIE Proceedings Vol. 1090:
Medical Imaging III: Image Formation
Samuel J. Dwyer; R. Gilbert Jost; Roger H. Schneider, Editor(s)

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