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MESURE DE LA POSITION D'UN DÉTECTEUR CENTRAL EN VUE DE L'ÉTALONNAGE GÉOMÉTRIQUE D'UN TOMODENSITOMÈTRE SUR LA BASE D'UN FANTÔME COMPLEXE
专利权人:
Analogic Corporation
发明人:
申请号:
EP08876436.0
公开号:
EP2366103B1
申请日:
2008.10.31
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
A position of a center detector of a radiation scanner can be determined without shutting down the scanner and/or manually positioning a phantom in the scanning field of the scanner. A phantom, comprising a target, is scanned to create an axial image of the phantom. The target is masked in the axial image, producing a masked axial image of the phantom. The masked axial image is reprojected in projection space, and the axial reprojection is compared to an axial projection or a rebinned axial projection of the phantom that was used to create the axial image. A target axial projection of data related to the masked target, created from the comparison of the axial projection or the rebinned axial projection and the axial reprojection, is used to determine the position of the center detector.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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