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Proceedings Paper

Medical imaging with reverse geometry x-radiography
Author(s): Randy F. Wojcik; Stan Majewski; Richard D. Albert; Thomas Milton Albert
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Paper Abstract

Reverse Geometry X-radiography imaging uses a unique configuration of x-ray source, patient, and x-ray detector to produce high resolution images. With the current system, produced by Digiray, one can obtain a resolution of 16 lp/mm and a contrast sensitivity of 0.2%. Using a lead focusing grid with 100 keV x-rays at 1 mA a dose of less than 20 mR/sec was measured. Typical acquisition times are 1/16 sec for 256 line resolution to 8 sec for 2048 line resolution. An optimized multi-detector system under development should reduce the dose rate to far less than 1 mR/sec and allow the possibility for fast volume CT applications providing laminographic view of the patient. Also `mini-probe' detectors have been developed which may be used to produce in-vitro unobstructured views.

Paper Details

Date Published: 1 May 1994
PDF: 8 pages
Proc. SPIE 2163, Medical Imaging 1994: Physics of Medical Imaging, (1 May 1994); doi: 10.1117/12.174286
Show Author Affiliations
Randy F. Wojcik, Continuous Electron Beam Accelerator Facility (United States)
Stan Majewski, Continuous Electron Beam Accelerator Facility (United States)
Richard D. Albert, Digiray Corp. (United States)
Thomas Milton Albert, Digiray Corp. (United States)


Published in SPIE Proceedings Vol. 2163:
Medical Imaging 1994: Physics of Medical Imaging
Rodney Shaw, Editor(s)

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