Clinically significant inaccurate localization of lesions with PET/CT: frequency in 300 patients.
Clinically significant inaccurate localization of lesions with PET/CT: frequency in 300 patients.
复制标题
PET/CT 病灶定位有临床意义的不准确：300 名患者的频率。
作者：
M. Osman;C. Cohade;Y. Nakamoto;Laura T. Marshall;J. Leal;R. Wahl
未标记
本研究评价了使用CT代替锗进行衰减校正（AC）时PET/CT研究中PET和CT之间的病变错误定位。
方法
对300名临床患者进行了PET/CT扫描。CT和锗扫描都用于校正PET发射数据。在5组图像（PET使用锗AC [GeAC]融合且未与CT融合，PET使用CT AC融合且未与CT融合，PET不使用AC [NAC]）中的任何一组图像上发现疑似病变定位不准确的病例。使用独立的CT或MRI来确定真实的病变位置。
结果
当CT用于AC或融合时，300例患者中有6例（2%）出现病变定位错误。基于PET/CT，真正的肝圆顶病变被错误定位到右肺，可能是因为PET和CT之间的呼吸运动差异。NAC PET或非CT融合GeAC PET图像上不存在错误定位。
结论
当CT用于AC或融合时，PET/CT研究可能会发生严重的病变错误定位，尽管非常罕见。
UNLABELLED
This study evaluated lesion mislocalization between PET and CT on PET/CT studies when CT instead of germanium is used for attenuation correction (AC).
METHODS
PET/CT scans were obtained for 300 clinical patients. Both CT and germanium scans were used to correct PET emission data. Cases were noted of suspected inaccurate localization of lesions on any of the 5 sets of images (PET using germanium AC [GeAC] fused and not fused with CT, PET using CT AC fused and not fused with CT, and PET with no AC [NAC]). Independent CT or MRI was used to determine true lesion locations.
RESULTS
Six of 300 patients (2%) had lesion mislocalization when CT was used for AC or fusion. True liver dome lesions were mislocalized to the right lung base on PET/CT, likely because of a respiratory motion difference between PET and CT. No mislocalization was present on NAC PET or non-CT-fused GeAC PET images.
CONCLUSION
Serious lesion mislocalization on PET/CT studies may occur, albeit very infrequently, when CT is used for either AC or fusion.
DOI：
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发表时间：
1993-07
期刊：
Journal of nuclear medicine : official publication, Society of Nuclear Medicine
影响因子：
--
作者：
R. Wahl;L. Quint;Richard D. Cieslak;A. Aisen;R. Koeppe;C. Meyer
通讯作者：
R. Wahl;L. Quint;Richard D. Cieslak;A. Aisen;R. Koeppe;C. Meyer
影响因子：
3.8
作者：
Kinahan, PE;Townsend, DW;Sashin, D
通讯作者：
Sashin, D