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Proceedings Paper

Performance assessment of the scanning beam digital x-ray (SBDX) system
Author(s): Michael S. Van Lysel; Edward G. Solomon; Brian P. Wilfley; April Dutta; Michael A. Speidel
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Paper Abstract

A prototype scanning-beam digital x-ray (SBDX) system for cardiac fluoroscopy has been constructed. The unique geometry and absence of detected x-ray scatter in the SBDX image promises to provide image quality equivalent to a conventional image-intensifier-based fluoroscopic system at substantially reduced x-ray exposure to patient and staff. In order to measure the SBDX exposure advantage, a contrast- detail study was performed comparing SBDX and a conventional cardiac fluoroscopic system. Low-contrast deductibility as a function of the phantom entrance exposure was determined. The expected SBDX exposure advantage was 3.0 to 3.4, for low-contrast objects ranging in diameter from 2 to 10 mm. This exposure advantage is applicable to the AP projection through an average-size cardiac patient. Based on these results, calculations show that angulated views and larger patients will experience significantly greater exposure reductions. In addition, the results also indicate that SBDX system design modifications can provide a greater exposure reduction from that measured with this prototype.

Paper Details

Date Published: 2 May 1997
PDF: 10 pages
Proc. SPIE 3032, Medical Imaging 1997: Physics of Medical Imaging, (2 May 1997); doi: 10.1117/12.273981
Show Author Affiliations
Michael S. Van Lysel, Univ. of Wisconsin/Madison (United States)
Edward G. Solomon, Cardiac Mariners, Inc. (United States)
Brian P. Wilfley, Cardiac Mariners, Inc. (United States)
April Dutta, Cardiac Mariners, Inc. (United States)
Michael A. Speidel, Univ. of Wisconsin/Madison (United States)


Published in SPIE Proceedings Vol. 3032:
Medical Imaging 1997: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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