Title :
Estimation of the X-ray scatter and veiling glare rate in coronarographic densitometric measurements
Author :
Goszczynska, Hanna ; Doria-Dernalowicz, J. ; Purzycki, Zbigniew ; Leszcznski, L.
Author_Institution :
Inst. of Biocybern. & Biomed. Eng., Polish Acad. of Sci., Warsaw, Poland
Abstract :
The method for absolute evaluation of X-ray scatter and veiling glare (SVG) in coronarographic images on cine films has been proposed in the light of some known approaches to this problem. In the method the reference object of the known X-ray attenuation is used and two kinds of characteristics: film sensitivity characteristic and image brightness vs. film optical density of the computer image acquisition system. The preliminary results have shown the significant contribution of X-ray SVG in images of coronary artery with contrast medium
Keywords :
X-ray scattering; blood flow measurement; blood vessels; brightness; cardiovascular system; densitometry; diagnostic radiography; image registration; medical image processing; X-ray attenuation reference object; X-ray scatter; absolute evaluation; cine films; computer image acquisition system; contrast medium; coronarographic densitometric measurements; coronarographic images; coronary artery; film optical density; film sensitivity characteristic; image brightness; veiling glare rate; Arteries; Brightness; Light scattering; Optical attenuators; Optical computing; Optical films; Optical scattering; Optical sensors; X-ray imaging; X-ray scattering;
Conference_Titel :
Engineering in Medicine and Biology Society, 2000. Proceedings of the 22nd Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6465-1
DOI :
10.1109/IEMBS.2000.900411
