Clinical nuclear medicine · 2024
Glucagon-Like Peptide-1 Receptor-Targeted PET/CT With 68 Ga-HBED-CC-Exendin-4 in Localizing Insulinoma : A Head-to-Head Comparison to 68 Ga-NOTA-Exendin-4.
СтатьяСравнительное исследованиеНазвание и аннотация: Перевод пока не подготовлен
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Li Linlin, Wang Guochang, Wang Jiarou, Ma Heng, Chen Jingci, Wang Rongxi, Pan Qingqing, Hong Haiyan, Jin Wenbin, Kung Hank F, Zhu Lin, Luo Yaping, Zhu Zhaohui
Аннотация
PURPOSE: Modifying glucagon-like peptide-1 receptor (GLP-1R)-targeted PET agent to achieve faster renal clearance and preserved high affinity to GLP-1R is clinically relevant. The aim of this study is to assess the performance of a newly developed GLP-1R-targeted agent, 68 Ga-HBED-CC-exendin-4 in localizing insulinoma, and its biodistribution, as compared with previously introduced 68 Ga-NOTA-exendin-4.
PATIENTS AND METHODS: Nineteen patients with endogenous hyperinsulinemic hypoglycemia were enrolled and referred for 68 Ga-HBED-CC-exendin-4 PET/CT and 68 Ga-NOTA-exendin-4 PET/CT within 2 consecutive days. Diagnostic performance of the 2 tracers in localizing insulinoma was evaluated, and SUV of the lesion, normal pancreas background, kidneys, and bladder were measured.
RESULTS: 68 Ga-HBED-CC-exendin-4 and 68 Ga-NOTA-exendin-4 PET/CT exhibited an equivalent efficacy in detection rate (both sensitivity of 100%). Although SUV max of the tumor in 68 Ga-HBED-CC-exendin-4 was significantly lower than that in 68 Ga-NOTA-exendin-4 (20.01 ± 9.41 vs 31.78 ± 15.46, P < 0.001) at 50 minutes postinjection, there was no significant difference in the tumor-to-background ratio between the 2 agents (8.61 ± 3.57 vs 8.18 ± 3.38, P = 0.326), and the lesions could be visible as early as 4 minutes postinjection for both agents in patients who underwent dynamic PET/CT. In addition, 68 Ga-HBED-CC-exendin-4 exhibited approximately 30% decrease of the renal accumulation compared with 68 Ga-NOTA-exendin-4 (SUV mean , 42.21 ± 5.79 vs 58.58 ± 10.06 at 50 minutes, P < 0.001).
CONCLUSIONS: 68 Ga-HBED-CC-exendin-4 is an effective agent for localizing insulinoma showing similar detectability and tumor-to-background ratio compared with 68 Ga-NOTA-exendin-4. Notably, 68 Ga-HBED-CC-exendin-4 exhibits significantly lower renal uptake than 68 Ga-NOTA-exendin-4, which might potentially benefit the detection of the tumors adjacent to the left kidneys.
PATIENTS AND METHODS: Nineteen patients with endogenous hyperinsulinemic hypoglycemia were enrolled and referred for 68 Ga-HBED-CC-exendin-4 PET/CT and 68 Ga-NOTA-exendin-4 PET/CT within 2 consecutive days. Diagnostic performance of the 2 tracers in localizing insulinoma was evaluated, and SUV of the lesion, normal pancreas background, kidneys, and bladder were measured.
RESULTS: 68 Ga-HBED-CC-exendin-4 and 68 Ga-NOTA-exendin-4 PET/CT exhibited an equivalent efficacy in detection rate (both sensitivity of 100%). Although SUV max of the tumor in 68 Ga-HBED-CC-exendin-4 was significantly lower than that in 68 Ga-NOTA-exendin-4 (20.01 ± 9.41 vs 31.78 ± 15.46, P < 0.001) at 50 minutes postinjection, there was no significant difference in the tumor-to-background ratio between the 2 agents (8.61 ± 3.57 vs 8.18 ± 3.38, P = 0.326), and the lesions could be visible as early as 4 minutes postinjection for both agents in patients who underwent dynamic PET/CT. In addition, 68 Ga-HBED-CC-exendin-4 exhibited approximately 30% decrease of the renal accumulation compared with 68 Ga-NOTA-exendin-4 (SUV mean , 42.21 ± 5.79 vs 58.58 ± 10.06 at 50 minutes, P < 0.001).
CONCLUSIONS: 68 Ga-HBED-CC-exendin-4 is an effective agent for localizing insulinoma showing similar detectability and tumor-to-background ratio compared with 68 Ga-NOTA-exendin-4. Notably, 68 Ga-HBED-CC-exendin-4 exhibits significantly lower renal uptake than 68 Ga-NOTA-exendin-4, which might potentially benefit the detection of the tumors adjacent to the left kidneys.