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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 change of normal abdominal digestive organ standard uptake (SUV) in ~ (18) F-FDG PET / CT imaging. Methods Sixty healthy subjects who underwent PET / CT were intravenously injected with ~ (18) F-FDG at a dose of 7.77 MBq / kg. PET was collected in three-dimensional mode and each bed was placed for 3 minutes. The liver, gallbladder, spleen, pancreas, stomach, cecum, colon and rectum were semi-quantitatively analyzed. The SUV of each organ was measured by cross-section and the same CT was used for accurate positioning. Results There was a significant difference in uptake of 18 F-FDG in normal abdominal digestive organs, with the highest intake of SUVs (avg) followed by rectal, hepatic, sigmoid, ileocecal and splenic ascending colon , SUV max (SUV max) followed by rectum, sigmoid colon, liver, ileocecal part, ascending colon and spleen. Conclusions PET / CT imaging can better identify the digestive organs of the abdomen. It is very important to interpret the difference of the uptake of 18 F-FDG in the normal abdominal digestive organs.