^(18)F-FDG PET/CT显像正常腹部消化器官的标准摄取值分析  

SUV effect of normal abdominal digestive organs in ^(18)F-FDG PET/CT imaging

作　　者：朱明[1] 韩丽君[1] 张建飞卫生部北京医院核医学科 屈婉莹卫生部北京医院核医学科 

机构地区：[1]卫生部北京医院核医学科,100730

出　　处：《中华核医学杂志》2006年第2期109-111,共3页Chinese Journal of Nuclear Medicine

摘　　要：目的分析^(18)F-脱氧葡萄糖(FDG)PET/CT 显像正常腹部消化器官标准摄取值(SUV)的变化范围。方法 60例要求行 PET/CT 检查的健康人,按体重7.77 MBq/kg 静脉注射^(18)F-FDG,PET 采集为三维模式,每个床位3min。对腹部肝、胆囊、脾、胰腺、胃、盲肠、结肠和直肠进行半定量分析,各器官的 SUV 由横断面测量,准确定位时参考同机 CT。结果正常腹部消化器官^(18)F-FDG 摄取有较大差异,其中摄取较高者 SUV 平均值(SUV)_(avg))依次为直肠、肝、乙状结肠、回盲部和脾、升结肠,SUV 最大值(SUV_(max))依次为直肠、乙状结肠、肝、回盲部、升结肠、脾。结论 PET/CT 显像能较好地识别腹部消化器官;熟悉正常腹部消化器官^(18)F-FDG 摄取的差异,对判读图像十分重要。Objective To analyze the range of standardized uptake values （SUV） of abdominal digestive orgaris in ^18F-fluorodeoxyglucose （FDG） PET/CT imaging of healthy persons. Methods Sixty healthy persons were included. After intravenous injection of 7.77 MBq/kg of ^18F-FDG, the PET/CT imaging was performed for 3 min/bed position on a Siemens Biograph Sensation 16 HR PET/CT scanner. The SUV of various abdominal organs including liver, gall bladder, spleen, pancreas, stomach, cecum, colon and rectum were obtained from transversal views. And the precise location referred to the plain CT. Results There was great variation in ^18F-FDG uptake of 8 various organs among which the average SUV （SUVavg） was highest in rectum, then in order of liver, sigmoid colon, ileocecum, spleen, and ascending colon, whereas the maximum SUV （SUVmax） was highest also in rectum and then in order of sigmoid colon, liver, ileocecum, ascending colon, and spleen. Conclusions PET/CT can well recognize different abdominal digestive organs. Well understanding the normal variation of ^18 F-FDG uptake in normal abdominal organs is important for proper interpretation of PET/CT imaging.

关 键 词：消化系统 体层摄影术 发射型计算机 体层摄影术 X线计算机 参考值 脱氧葡萄糖 

分 类 号：R817.4[医药卫生—影像医学与核医学]