Optimizing Acquisition Parameters and Interpretive Methods of FDG-PET/CT With Rb-82

a radiopharmaceutical used in the medical imaging modality positron emission tomography (PET)

used in PET scans

A 18-20 gauge catheter equipped with a 3-way stopcock will be inserted preferably in the antecubital vein. Cardiac FDG-PET imaging will be performed on the YNHH GE Discovery ST PET/CT scanner following a high fat/low carbohydrate diet and a prolonged fast as is current clinical protocol. Resting ECG-gated dynamic Rb-82 PET imaging will be performed using 20-30 mCi of Rb82 as per YNHH clinical imaging protocol and established clinical guidelines. FDG-PET imaging will be performed following a high fat/low carbohydrate diet (instructions provided to patient) and a fast of greater than 12 hours. The patient will be injected with the same dose of FDG (8-10mCi) as they received for their index clinical examination. Cardiac FDG imaging will be performed using a single 3D acquisition over the heart. Low-dose CT images (120 kV, 50-150 mA based on BMI) for the purposes of attenuation correction will be performed before Rb82 and FDG imaging sequences.