摘要
目的:探讨氟18(^(18)F)贝他苯(^(18)F-FBB)PET脑部图像不同采集时长对标准化摄取值(SUV)的影响。方法:选取2021年5-6月在解放军总医院进行^(18)F-FBB PET检查的8名受试者,其中健康受试者5名,轻度认知障碍(MCI)患者3例。所有受试者均行^(18)F-FBB PET检查,在注射^(18)F-FBB注射液(3.7~5.5 MBq/kg)后90~110 min连续采集脑部动态PET图像20 min。在其他重建参数不变的情况下,分别选择0~1、0~3、0~5、0~10、0~15和0~20 min进行图像重建,在每组图像的双侧额叶皮层、双侧颞叶皮层、双侧顶叶皮层、后扣带回和小脑皮层勾划相同的感兴趣区域(ROI),获得各区相应的平均标准化摄取值(SUVmean)。对比分析各组数据图像与0~20 min图像中不同ROI的SUVmean的差异。结果:图像重建时采集0~1、0~3、0~5和0~10 min的图像与标准采集0~20 min图像SUVmean具有显著差异(t=-7.569~-2.410,P<0.05),0~15 min图像在双侧额叶、双侧颞叶、双侧顶叶皮层及后扣带回等区域的SUVmean值与标准0~20 min采集图像无明显差异(P>0.05),只在小脑皮层区域两者之间存在差异(t=-5.597,P<0.001)。结论:图像采集时长为15 min时可以达到与20 min图像采集时长相近的结果,可缩短检查时间,提高受检舒适度及配合度,具有临床应用价值。
Objective:To investigate the effect of different acquisition duration of brain image of ^(18)F-florbetaben(^(18)F-FBB)positron emission tomography(PET)on standardized uptake value(SUV).Methods:Eight subjects who underwent ^(18)F-FBB PET examination in Chinese PLA General Hospital from May 2021 to June 2021 were selected,including 5 persons of healthy control and 3 patients with mild cognitive impairment(MCI).All subjects underwent ^(18)F-FBB PET imaging,and the dynamic PET images of them on brains were continuously acquired for 20 min between 90 and 110 min after the ^(18)F-FBB injection was injected as(3.7-5.5 MBq/kg).Under the situation that other reconstruction parameters did not change,the images were reconstructed at 0-1,0-3,0-5,0-10,0-15 and 0-20 min,respectively.The same of region of interest(ROI)ranges were delineated in bilateral frontal cortex,bilateral temporal cortex,bilateral parietal cortex,posterior cingulate gyrus and cerebellar cortex of each group of images.And then,the corresponding mean standardized uptake value(SUVmean)of each region was obtained.The differences of SUVmean values of different ROI values between each group of data images and the images of 0-20 min were compared and analyzed.Results:There were significant differences in SUVmean between the acquired images in 0-1,0-3,0-5 and 0-10 min and the acquired standard images of 0-20 min(t=-7.569--2.410,P<0.05),respectively.There were no significant differences in SUVmean between the acquired images of 0-15 min and the acquired standard images of 0-20 min in the bilateral frontal lobe,bilateral temporal lobe,bilateral parietal cortex and posterior cingulate gyrus(P>0.05),only there was significant difference in the cerebellar cortex area between them(t=-5.597,P<0.001).Conclusion:The results of 15 min can reach to the similar results of 20 min in acquiring images,which can shorten the time of examination,and enhance the degrees of comfort and cooperation of patients in examination.It has clinical application value.
作者
吴世娜
刘猛
孙树伟
常燕
刘家金
王瑞民
徐白萱
姚树林
Wu Shina;Liu Meng;Sun Shuwei;Chang Yan;Liu Jiajin;Wang Ruimin;Xu Baixuan;Yao Shulin(Department of Nuclear Medicine,The First Medical Center,Chinese PLA General Hospital,Beijing 100853,China;Department of Nuclear Medicine,Sun Yat-sen University Cancer Center,Guangzhou 510060,China)
出处
《中国医学装备》
2024年第2期12-15,共4页
China Medical Equipment
关键词
阿尔茨海默病
正电子发射断层扫描
列表模式采集
最佳采集时长
Alzheimer's disease
Positron emission tomography(PET)
Acquisition of list mode
Best acquisition duration
