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Journal of biomedical engineering research : the official journal of the Korean Society of Medical & Biological Engineering 저널 지식맵 / v.32 no.1, 2011년, pp.15-24


Rebinning-Based Deterministic Image Reconstruction Methods for Compton Camera
컴프턴 카메라를 위한 재배열 기반 확정론적 영상재구성법 원문 소장처 저널이용지표 원문복사신청

논문상세정보
이미노 저자 지식맵 ( 배재대학교 전자공학과 기관 지식맵) ;  이수진 저자 지식맵 ( 배재대학교 전자공학과 기관 지식맵) ;  서희 저자 지식맵 ( 한양대학교 원자력공학과 기관 지식맵) ;  열기
초록(Abstract)   한글번역보기

While Compton imaging is recognized as a valuable 3-D technique in nuclear medicine, reconstructing an image from Compton scattered data has been of a difficult problem due to its computational complexity. The most complex and time-consuming computation in Compton camera reconstruction is to perform the conical projection and backprojection operations. To alleviate the computational burden imposed by these operations, we investigate a rebinning method which can convert conical projections into parallel projections. The use of parallel projections allows to directly apply the existing deterministic reconstruction methods, which have been useful for conventional emission tomography, to Compton camera reconstruction. To convert conical projections into parallel projections, a cone surface is sampled with a number of lines. Each line is projected onto an imaginary plane that is mostly perpendicular to the line. The projection data rebinned in each imaginary plane can then be treated as the standard parallel projection data. To validate the rebinning method, we tested with the representative deterministic algorithms, such as the filtered backprojection method and the algebraic reconstruction technique. Our experimental results indicate that the rebinning method can be useful when the direct application of existing deterministic methods is needed for Compton camera reconstruction.

주제어

Compton camera 주제어 지식맵 . emission tomography 주제어 지식맵 . image reconstruction 주제어 지식맵 . rebinning methods 주제어 지식맵 . deterministic reconstruction methods 주제어 지식맵 . filtered backprojection 주제어 지식맵 . algebraic reconstruction technique 주제어 지식맵

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