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Proceedings Paper

2-Dimensional Primary X-Ray Image Formation And Quality In Angiography Using Absorption-Edge Filters In The Range 40-60 Kev
Author(s): Leon Piotrowski
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Paper Abstract

Computer simulation techniques are used to examine Pr, Gd and Yb (K-edge) filters for the x-ray imaging of iodinated blood vessels. The performance of these filters is compared to a standard 2 mm Al filter with respect to vessel contrast, patient exposure and integral absorbed dose and x-ray tube loading. Additional simulations investigate how 0.2 mm Pr, Gd or Yb filters interact with the non-isotropic x-ray spectrum and affect the background intensity and vessel contrast across the detector surface, and the uniformity of exposure and integral absorbed dose across the patient. The results show that the uniformity of the primary x-ray image is neither degraded nor improved by these filters; however, patient exposure and dose can be substantially reduced and rendered more uniform.

Paper Details

Date Published: 1 January 1987
PDF: 8 pages
Proc. SPIE 0767, Medical Imaging, (1 January 1987); doi: 10.1117/12.966999
Show Author Affiliations
Leon Piotrowski, THOMSON-CGR, DTS (France)

Published in SPIE Proceedings Vol. 0767:
Medical Imaging
Samuel J. Dwyer; Roger H. Schneider, Editor(s)

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