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Proceedings Paper

Evaluation of angiograms obtained from a laser-based x-ray source in DESA regime
Author(s): Ernest M. Scalzetti; Andrzej Krol; George M. Gagne; Ted T. Renvyle; Charles C. Chamberlain; Jean-Claude Kieffer; Zhiming Jiang; Jianfan Yu
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Paper Abstract

Contrast resolution of angiograms created using a laser-based x-ray source in Dual Energy Subtraction Angiography (DESA) regime has been investigated. It has been compared to contrast in angiograms obtained using an x-ray tube-based clinical angiography unit in DSA mode. Contrast detail phantoms and rats with opacified vascular structures were imaged. A table top terawatt laser was used (1019 Wcm-2, 150 fs or 450 fs per pulse). For Iodine contrast agent, an Iodine filter was used with the BaF2 target to obtain images with mean x-rays energy below the Iodine K-edge. La target and La filter was used to obtain images with mean x-rays energy above the Iodine K-edge. For Ba contrast agent, a Nd filter was used with the Nd target to obtain images with mean x-rays energy below the Ba K-edge. Gd target and Nd filter was used to obtain images with mean x-rays energy above the Barium K-edge. It has been determined that the laser-based DESA with properly selected targets demonstrates better contrast than a standard x-ray tube-based DSA angiography. We conclude that laser-based x-ray source has promise for angiography in DESA regime providing that sufficient x-ray flux can be delivered by the laser.

Paper Details

Date Published: 24 May 1999
PDF: 7 pages
Proc. SPIE 3663, Medical Imaging 1999: Image Perception and Performance, (24 May 1999); doi: 10.1117/12.349640
Show Author Affiliations
Ernest M. Scalzetti, Health Science Ctr./SUNY Syracuse (United States)
Andrzej Krol, Health Science Ctr./SUNY Syracuse (United States)
George M. Gagne, Health Science Ctr./SUNY Syracuse (United States)
Ted T. Renvyle, Health Science Ctr./SUNY Syracuse (United States)
Charles C. Chamberlain, Health Science Ctr./SUNY Syracuse (United States)
Jean-Claude Kieffer, INRS/Univ. Quebec (Canada)
Zhiming Jiang, INRS/Univ. Quebec (United States)
Jianfan Yu, INRS/Univ. Quebec (Canada)


Published in SPIE Proceedings Vol. 3663:
Medical Imaging 1999: Image Perception and Performance
Elizabeth A. Krupinski, Editor(s)

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