3 May 2002 Experimental demonstration of automated scatter-glare correction in fluoroscopic images
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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.
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Robert A. Close, Robert A. Close, Craig A. Morioka, Craig A. Morioka, James Stuart Whiting, 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); doi: 10.1117/12.465576; https://doi.org/10.1117/12.465576
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