Practical x-ray scatter measurements for volume CT detector design

Timothy R. Fox; David T. Nisius; Hiroshi Aradate; Yasuo Saito

doi:10.1117/12.430948

28 June 2001 Practical x-ray scatter measurements for volume CT detector design

Timothy R. Fox, David T. Nisius, Hiroshi Aradate, Yasuo Saito

Proceedings Volume 4320, Medical Imaging 2001: Physics of Medical Imaging; (2001) https://doi.org/10.1117/12.430948
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

Abstract

To help design a volume CT scanner, we measured x-ray scatter through large irradiated volumes, with and without detector collimator. An x-ray tube (125 to 150 kV) with an adjustable diaphragm irradiates volumes 25 to 200 mm thick. The scattering objects are water cylinders (approximate diameters 200, 300, and 500 mm). Complementary apertures (between the object and the detector collimator, along a line from the source) select `scatter' or `direct' detector signals. A direct-defining hole in a lead plate mounts over a pilot hole in a thin plastic sheet. With the lead plate removed, a scatter-defining plug fits into the pilot hole to block the same solid angle.

Citation Download Citation

Timothy R. Fox, David T. Nisius, Hiroshi Aradate, and Yasuo Saito "Practical x-ray scatter measurements for volume CT detector design", Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); https://doi.org/10.1117/12.430948

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