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A region segmentation based algorithm for building a crystal position lookup table in a scintillation detector
Wang HP(王海鹏); Yuan MK(贠明凯); Liu SQ(刘双全); Fan Q(樊磬); Cao XX(曹学香); Chai P(柴培); Dan BC(单保慈); Wang, HP; Yun, MK; Liu, SQ; Fan, X; Cao, XX; Chai, P; Shan, BC
刊名CHINESE PHYSICS C
2015
卷号39期号:3页码:38201
关键词position lookup table position histogram region segmentation scintillation detector
学科分类Physics
DOI10.1088/1674-1137/39/3/038201
通讯作者单保慈
文章类型Article
英文摘要In a scintillation detector, scintillation crystals are typically made into a 2-dimensional modular array. The location of incident gamma-ray needs be calibrated due to spatial response nonlinearity. Generally, position histograms-the characteristic flood response of scintillation detectors-are used for position calibration. In this paper, a position calibration method based on a crystal position lookup table which maps the inaccurate location calculated by Anger logic to the exact hitting crystal position has been proposed. Firstly, the position histogram is preprocessed, such as noise reduction and image enhancement. Then the processed position histogram is segmented into disconnected regions, and crystal marking points are labeled by finding the centroids of regions. Finally, crystal boundaries are determined and the crystal position lookup table is generated. The scheme is evaluated by the whole-body positron emission tomography (PET) scanner and breast dedicated single photon emission computed tomography scanner developed by the Institute of High Energy Physics, Chinese Academy of Sciences. The results demonstrate that the algorithm is accurate, efficient, robust and applicable to any configurations of scintillation detector.
类目[WOS]Physics, Nuclear ; Physics, Particles & Fields
收录类别SCI ; CA
WOS记录号WOS:000351807500016
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228376
专题核技术应用研究中心_期刊论文
核技术应用研究中心
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Wang HP,Yuan MK,Liu SQ,et al. A region segmentation based algorithm for building a crystal position lookup table in a scintillation detector[J]. CHINESE PHYSICS C,2015,39(3):38201.
APA 王海鹏.,贠明凯.,刘双全.,樊磬.,曹学香.,...&Shan, BC.(2015).A region segmentation based algorithm for building a crystal position lookup table in a scintillation detector.CHINESE PHYSICS C,39(3),38201.
MLA 王海鹏,et al."A region segmentation based algorithm for building a crystal position lookup table in a scintillation detector".CHINESE PHYSICS C 39.3(2015):38201.
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