Surface reconstruction of detect contours for medical image registration purpose
محل انتشار: مجله پزشکی هسته ای ایران، دوره: 10، شماره: 2
سال انتشار: 1381
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 117
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شناسه ملی سند علمی:
JR_IRJNM-10-2_003
تاریخ نمایه سازی: 6 تیر 1401
چکیده مقاله:
Although, most of the abnormal structures of human brain do not alter the shape of outer envelope of brain (surface), some abnormalities can deform the surface extensively. However, this may be a major problem in a surface-based registration technique, since two nearly identical surfaces are required for surface fitting process. A type of verification known as the circularity check for the shape of the detected head contours was defined based on the curvature measurement. Any unacceptable deformity (or hole) existing in the brain surface can be detected by the circularity check and 'reformed' by a type of interpolation process. Two techniques were suggested to 'reform' the abnormal regions and holes on the surfaces: one based on median filtering and another based on contour reflection.
کلیدواژه ها:
نویسندگان
M Oghabian
Medical Physics Department, / Research Center for Sciences and Technology, Tehran University of Medical Sciences, Tehran, Iran
P Kaboli
Research Center for Sciences and Technology, / Department of Radiology, Tehran University of Medical Sciences, Tehran, Iran
S Sarkar
Medical Physics Department, / Research Center for Sciences and Technology, Tehran University of Medical Sciences, Tehran, Iran