Comparative study of 68Ga-DOTATATE and 18F-FDG PET/CT imaging in the detection of bone metastasis in neuroendocrine neoplasm
10.3760/cma.j.cn321828-20200414-00147
- VernacularTitle:68Ga-DOTATATE与 18F-FDG PET/CT显像探测神经内分泌肿瘤骨转移的对比研究
- Author:
Changzhi DU
1
;
Qing XIE
;
Shizhen ZHAI
;
Yan ZHANG
;
Ming LU
;
Hua ZHU
;
Nan LI
;
Zhi YANG
;
Jiangyuan YU
Author Information
1. 北京大学肿瘤医院暨北京市肿瘤防治研究所核医学科、国家药监局放射性药物研究与评价重点实验室、恶性肿瘤发病机制及转化研究教育部重点实验室 100142
- Keywords:
Carcinoma, neuroendocrine;
Neoplasm metastasis;
Skeleton;
Positron-emission tomography;
Tomography, X-ray computed;
Octreotide;
Gallium radioisotopes;
Deoxyg
- From:
Chinese Journal of Nuclear Medicine and Molecular Imaging
2021;41(9):520-524
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the value of 68Ga-1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid- D-Phe1-Tyr3-Thr8-octreotide (DOTATATE) and 18F-fluorodeoxyglucose (FDG) PET/CT imaging in the detection of bone metastasis in neuroendocrine neoplasm (NEN). Methods:From January 2014 to July 2019, 29 NEN patients (19 males, 10 females, age: 35-76 years) with bone metastasis who underwent 68Ga-DOTATATE and 18F-FDG PET/CT imaging within one month in Peking University Cancer Hospital & Institute were retrospectively enrolled. Patients were divided into Ki-67≤20% and Ki-67>20% groups according to the tumor proliferation activity, and osteolysis, osteogenesis and no change groups according to the CT findings of bone metastases. The differences of the number and radioactive uptake (maximum standardized uptake value (SUV max) ratio of bone lesion to normal bone (SUV T/B)) of detected bone metastases between 68Ga-DOTATATE and 18F-FDG PET/CT imaging were analyzed. χ2 and Mann-Whitney U tests were used to analyze the data. Results:The sensitivity of 68Ga-DOTATATE and 18F-FDG PET/CT imaging were 75.9%(22/29) and 82.8% (24/29) respectively, and there was no significant difference between the two modalities ( χ2=0.42, P>0.05). The numbers of cases with bone lesions detected by 68Ga-DOTATATE PET/CT imaging in pelvis, spine, ribs, proximal limbs, sternoclavicular scapula and skull were all higher than those of 18F-FDG PET/CT imaging (23, 22, 20, 14, 14, 10 vs 12, 19, 13, 11, 10, 6, respectively). The 68Ga-DOTATATE PET/CT imaging was significantly superior to 18F-FDG imaging in detecting bone metastases (9(3, 36) and 3(0, 18)) and SUV T/B(11.10(3.35, 22.30) and 1.60(1.05, 2.70); U values: 281.000, 77.000, both P<0.001). 68Ga-DOTATATE PET/CT imaging found more bone lesions in well differentiated NEN (Ki-67≤20%) group (11(2, 38) and 2(0, 13)) and osteogenic bone metastasis group (31(3, 100) and 3(0, 31); U values: 105.500, 69.500, both P<0.05). SUV T/B of 68Ga-DOTATATE PET/CT imaging was significantly higher than 18F-FDG PET/CT imaging in all subgroups ( U values: 3.000-22.000, all P<0.05). Conclusion:The 68Ga-DOTATATE PET/CT imaging is superior to 18F-FDG PET/CT imaging in the detection of bone metastasis in NEN.
