Early Injection of Furosemide Increases Detection Rate of Local Recurrence in Prostate Cancer Patients with Biochemical Recurrence Referred for 68Ga-PSMA-11 PET/CT | Journal of Nuclear Medicine

Early Injection of Furosemide Increases Detection Rate of Local Recurrence in Prostate Cancer Patients with Biochemical Recurrence Referred for 68Ga-PSMA-11 PET/CT | Journal of Nuclear Medicine: The aim of this study was twofold. First, we aimed to assess the impact of forced diuresis with early furosemide injection on the detection rate of local recurrence in prostate cancer patients with biochemical recurrence referred for 68Ga-labeled Glu-NH-CO-NH-Lys(Ahx)-HBED-CC (68Ga-PSMA-11) PET/CT. Second, we determined whether intravenous administration of furosemide shortly after tracer injection increases renal washout of 68Ga-PSMA-11 before it binds to the PSMA receptor with possible influence on biodistribution and intensity of tracer uptake in organs with physiologic tracer accumulation. Methods: In a retrospective analysis, 2 different groups with 220 prostate cancer patients each, referred for 68Ga-PSMA-11 PET/CT because of biochemical recurrence after primary therapy, were compared: patients in group 1 (median prostate-specific antigen, 1.30 ng/mL) received no preparation before imaging, whereas patients in group 2 (median prostate-specific antigen, 0.82 ng/mL) were injected with 20 mg of furosemide and 500 mL of sodium chloride (NaCl 0.9%) immediately after tracer injection. The presence of local recurrence was assessed visually. In addition, the intensity of tracer accum

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