PSMA-PET Imaging in Patients With Metastatic Prostate Cancer: Institutional Evaluation of Detection Yield Performance and Reproducibility

"PET/CT scanning is performed on hybrid PET/CT scanners. Patients should fast for at least 4 hours to facilitate transit of oral contrast into the distal small bowel. An oral contrast product can be administered and \[18F\]-DCFPyL is injected by IV rapid bolus followed by saline flush. 80-100 minutes following \[18F\]-DCFPyL injection, CT and PET images are consecutively acquired from the base of the skull to the upper thighs. An MRI of the questioned lesion sites may be performed.~Uptake of lesions is measured with SUVmax. Hepatic and blood pool SUV is determined for the computation of tumor-to-liver and tumor-to-blood ratios.~15 patients max will undergo a second PSMA-PET scan on the same camera with the same protocol using a different tracer batch within 2 weeks of the initial PSMA-PET evaluation in order to determine test-retest repeatability of the imaging procedure using a Bland-Altman analysis (per lesion analysis)."