Artifacts at PET and PET/CT caused by metallic hip prosthetic material
Artifacts at PET and PET/CT caused by metallic hip prosthetic material
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DOI：
10.1148/radiol.2262012141
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发表时间：
2003-02-01
期刊：
影响因子：
19.7
通讯作者：
Buck, A
中科院分区：
文献类型：
--
作者：
Goerres, GW;Ziegler, SI;Buck, A
髋关节假体材料和钢棒在氟18氟脱氧葡萄糖（FDG）水浴中用正电子发射断层扫描（PET）和PET/计算机断层扫描（CT）扫描仪进行扫描，以评估金属附近伪影的产生。衰减校正（AC），定位的对象，和图像重建的影响进行了检查。使用基于CT和锗68的AC导致产生模拟FDG摄取增加的伪影。当物体在发射和透射扫描之间移动时，这些伪影更加明显。当使用衰减加权迭代重建时，这些伪影不太明显。(C)RSNA，2002年。
Hip prosthetic material and a steel rod were scanned in a water bath of fluorine 18 fluorodeoxyglucose (FDG) with positron emission tomographic (PET) and PET/computed tomographic (CT) scanners to evaluate the generation of artifacts adjacent to the metal. The influences of attenuation correction (AC), positioning of the object, and image reconstruction were examined. Use of CT- and germanium 68- based AC resulted in generation of artifacts that mimicked increased FDG uptake. These artifacts were more evident when the object was moved between the emission and transmission scans. When attenuation-weighted iterative reconstruction was used, these artifacts were less evident. (C) RSNA, 2002.