Fore-And-Aft Rotating Aperture Wheel (RAW) Device For Improving Radiographic Contrast

Stephen Rudin

doi:10.1117/12.957130

6 July 1979 Fore-And-Aft Rotating Aperture Wheel (RAW) Device For Improving Radiographic Contrast

Stephen Rudin

Proceedings Volume 0173, Application of Optical Instrumentation in Medicine VII; (1979) https://doi.org/10.1117/12.957130
Event: Application of Optical Instrumentation in Medicine VII, 1979, Toronto, Canada

Abstract

A Rotating Aperature Wheel (RAW) technology is under development which involves replacing a grid for scatter elimination with an assembly of one fore and two aft lead aperature wheels which are rotated so as to maintain the alignment between the slit or aperature pattern of each. Such a design has the unique feature that its motion can be made indepen-dent of the x-ray exposure time and duration allowing for the first time the practical use of a moving slit anti-scatter technique in rapid sequence and dynamic radiographic procedures. The technology is flexible so as to lend itself toward use with varying source to image receptor distances such as is involved in fluoroscopy.

Citation Download Citation

Stephen Rudin "Fore-And-Aft Rotating Aperture Wheel (RAW) Device For Improving Radiographic Contrast", Proc. SPIE 0173, Application of Optical Instrumentation in Medicine VII, (6 July 1979); https://doi.org/10.1117/12.957130

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