2-Dimensional Primary X-Ray Image Formation And Quality In Angiography Using Absorption-Edge Filters In The Range 40-60 Kev

Leon Piotrowski

doi:10.1117/12.966999

1 January 1987 2-Dimensional Primary X-Ray Image Formation And Quality In Angiography Using Absorption-Edge Filters In The Range 40-60 Kev

Leon Piotrowski

Author Affiliations +

Proceedings Volume 0767, Medical Imaging; (1987) https://doi.org/10.1117/12.966999
Event: Medical Imaging, 1987, Newport Beach, CA, United States

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.

Citation Download Citation

Leon Piotrowski "2-Dimensional Primary X-Ray Image Formation And Quality In Angiography Using Absorption-Edge Filters In The Range 40-60 Kev", Proc. SPIE 0767, Medical Imaging, (1 January 1987); https://doi.org/10.1117/12.966999

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