지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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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
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참고문헌 (17)
참고문헌 신청
A. Andreyev / 2009 / Stochastic image reconstruction method for Compton camera / IEEE NSS&MIC Conference Record : 2985 ~ 2988
A. Andreyev / 2010 / Reconstructed image spatial resolution of multiple coincidences compton imager / IEEE Trans. Nucl. Sci 57 : 151 ~ 159
A. C. Sauve / 1999 / 3D image reconstruction for Compton SPECT camera model / IEEE Trans. Nucl. Sci 46 : 2075 ~ 2084
B.Smith / 2005 / Reconstruction methods and completeness conditions for two Compton data models / J. Opt. Soc. Am. A 22 (3) : 445 ~ 459
D. Xu / 2006 / Filtered back-projection in 4π Compton imaging with a single 3D position sensitive CdZnTe detector / IEEE Trans. Nucl. Sci 53 (5) : 2787 ~ 2793
A. Andreyev / 2010 / Reconstructed image spatial resolution of multiple coincidences compton imager / IEEE Trans. Nucl. Sci 57 : 151 ~ 159
A. C. Sauve / 1999 / 3D image reconstruction for Compton SPECT camera model / IEEE Trans. Nucl. Sci 46 : 2075 ~ 2084
B.Smith / 2005 / Reconstruction methods and completeness conditions for two Compton data models / J. Opt. Soc. Am. A 22 (3) : 445 ~ 459
D. Xu / 2006 / Filtered back-projection in 4π Compton imaging with a single 3D position sensitive CdZnTe detector / IEEE Trans. Nucl. Sci 53 (5) : 2787 ~ 2793
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