Experimental demonstration of automated scatter-glare correction in fluoroscopic images

Robert A. Close; Craig A. Morioka; James Stuart Whiting

doi:10.1117/12.465576

3 May 2002 Experimental demonstration of automated scatter-glare correction in fluoroscopic images

Robert A. Close, Craig A. Morioka, James Stuart Whiting

Proceedings Volume 4682, Medical Imaging 2002: Physics of Medical Imaging; (2002) https://doi.org/10.1117/12.465576
Event: Medical Imaging 2002, 2002, San Diego, California, United States

Abstract

Fluoroscopic images are degraded by scattering of x-rays from within the patient and by veiling glare in the image intensifier. Both of these degradations are well described by a response function applied to primary intensity. We can automatically estimate the parameters of the response function with the aid of a reference object placed in the imaging field. Subtraction of the true reference signal yields artifacts unless proper scatter-glare correction is performed. We adjust the scatter-glare parameters in order to minimize these artifacts. We demonstrate this technique using an anthropomorphic phantom plus additional scattering material. Root mean square error in densitometric measurements of an x-ray phantom is reduced by 54 percent compared with no correction and by 36 percent compared with subtraction of uniform scatter measured under a beam stop.

Citation Download Citation

Robert A. Close, Craig A. Morioka, and James Stuart Whiting "Experimental demonstration of automated scatter-glare correction in fluoroscopic images", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); https://doi.org/10.1117/12.465576

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