Medical imaging with reverse geometry x-radiography

Randy F. Wojcik; Stan Majewski; Richard D. Albert; Thomas Milton Albert

doi:10.1117/12.174286

1 May 1994 Medical imaging with reverse geometry x-radiography

Randy F. Wojcik, Stan Majewski, Richard D. Albert, Thomas Milton Albert

Proceedings Volume 2163, Medical Imaging 1994: Physics of Medical Imaging; (1994) https://doi.org/10.1117/12.174286
Event: Medical Imaging 1994, 1994, Newport Beach, CA, United States

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.

Citation Download Citation

Randy F. Wojcik, Stan Majewski, Richard D. Albert, and Thomas Milton Albert "Medical imaging with reverse geometry x-radiography", Proc. SPIE 2163, Medical Imaging 1994: Physics of Medical Imaging, (1 May 1994); https://doi.org/10.1117/12.174286

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