No special preparation such as fasting and fasting is required before the examination. The radiotracer 18F-AlF-NOTA-pentiaxther PET/CT (dose 4.81 MBq/Kg body weight) was injected intravenously according to the patient's body weight, and the drug was synthesized by the Department of Nuclear Medicine of Sichuan Provincial People's Hospital immediately before the examination. Before the examination, patients were instructed to urinate as many times as possible to reduce the possible influence of the residual radiotracer in the renal pelvis and calyces on the image quality. The whole-body PET/CT examination from the top of the skull to the root of the thigh was performed using a PET/CT examination instrument (Siemens Biograph mCT Flow) 50-60 minutes after the injection of radiopharmaceuticals. Flow Motion flow scanning technology with a matrix of 128x128 and a layer thickness of 3 mm was used. all PET images were reconstructed iteratively.

The radiotracer 18F-AlF-NOTA-pentixather PET/CT (dose 4.81 MBq/Kg body weight) was injected intravenously according to the patient's body weight. The whole-body PET/CT examination from the top of the skull to the root of the thigh was performed using a PET/CT examination instrument (Siemens Biograph mCT Flow) 50-60 minutes after the injection of radiopharmaceuticals. Flow Motion flow scanning technology with a matrix of 128x128 and a layer thickness of 3 mm was used. all PET images were iteratively reconstructed. Patients who have undergone surgery routinely undergo pathological examination.

Maximum standardized uptake value of suspicious adrenal lesion on [18F]AlF-NOTA-pentixather PET/CT

The ratio of SUVmax of adrenal lesions to SUVmean of the liver background and the ratio of SUVmax of adrenal lesions to SUVmean of the contralateral adrenal gland were analyzed in the study as the target background ratio(TBR).