TOF-PET/MR和TOF-PET/CT在体部恶性肿瘤SUV_(max)值的比较  

Comparision of SUV_(max) of TOF-PET/MR and TOF-PET/CT in body malignant tumor

作　　者：宋天彬[1] 卢洁[1,2] 崔碧霄[1] 马杰[1] 杨宏伟 马蕾[1] 梁志刚[1] 

机构地区：[1]首都医科大学宣武医院核医学科,北京100053 [2]首都医科大学宣武医院放射科,北京100053

出　　处：《中国医学影像技术》2017年第9期1401-1406,共6页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨时间飞行(TOF)技术PET/CT和PET/MR检查体部恶性病变SUV_(max)值的一致性。方法回顾性分析接受TOF-PET/CT和TOF-PET/MR检查的体部恶性肿瘤患者20例,分为先PET/CT后PET/MR组和先PET/MR后PET/CT组,每组10例。采用Bland-Altman图评价两次检查病灶SUV_(max)值的一致性,采用多因素方差分析评价扫描顺序和机器类型对病灶的SUV_(max)测量值的影响。结果 TOF-PET/CT与TOF-PET/MR检查病灶的SUV_(max)值有较好的一致性[先PET/CT后PET/MR组:均值差为3.06,95%CI(-7.5,13.6),先PET/MR后PET/CT组:均值差3.0,95%CI(-2.4,8.3)]。扫描顺序对于恶性病灶的SUV_(max)有影响(F=46.00,P<0.001),而机器类型对恶性病灶的SUV_(max)值无影响(F=0.005,P=0.95)。结论 TOF-PET/MR和TOF-PET/CT在体部恶性病变SUV_(max)值测量方面具有相当的诊断价值,且延迟显像SUV_(max)的增加与采集时间有关,而与检查机器类型无关。Objective To explore the consistency of time-of-flight（TOF）technology of PET/MRI and PET/CT for max standardized uptake value（SUVmax）of body malignant tumors.Methods A retrospective analysis of TOF-PET/CT and TOF-PET/MR imaging data about twenty patients with body malignant tumors was performed.Patients were divided into two groups（each n=10）,including PET/CT first and sequentially PET/MR group and PET/MR first and sequentially PET/CT group.Bland-Altmanfigure was used to evaluate consistency of SUVmaxof malignant lesions between TOF-PET/CT and TOF-PET/MR.Multi-way ANOVA was used to analysis effect of machine type and exam order on SUVmaxof malignant lesions in TOF-PET/CT and TOF-PET/MR.Results SUVmax of malignant lesions in TOF-PET/CT and TOFPET/MR had good consistency in two groups（PET/CT first and sequentially PET/MR group：Mean difference was 3.06,95%CI was[-7.5,13.6];PET/MR first and sequentially PET/CT group：Mean difference was 3.0,95%CI was[-2.4,8.3]）.SUVmaxwas not influenced by machine type（F=0.005,P=0.95）,but exam order（F=46.00,P〈0.001）.Conclusion PET/MR and PET/CT with TOF technology have comparative diagnostic value in SUVmaxof body malignant lesions.SUVmaxof body malignant lesions increases in delay time,which is not related to machine type,but exam time.

关 键 词：时间飞行技术 正电子发射断层显像术 磁共振成像 体层摄影术 X线计算机 氟脱氧葡萄糖 标准摄取值 

分 类 号：R73[医药卫生—肿瘤] R817.4[医药卫生—临床医学]