"Timing of PET scans is of particular importance for insulin-dependent diabetic patients, as administration of exogenous insulin can decrease the image quality of certain PET scans (e.g. 18-F FDG PET). Blood sugar levels of up to 13mmol/L are accepted at some centres, where patients are then hydrated with oral or intravenous fluids. If short-acting insulin is administered, scans may have to be delayed by up to 4 hours."
"F-18 FDG is a glucose analogue, with broad clinical applications for the imaging assessment of certain types of cancer, as well as infection and inflammation. The indications for F-18 FDG PET-CT imaging in patients with cancer:"
"establish baseline staging before commencing treatment (e.g. GIST)"
"establish baseline staging before commencing treatment (e.g. GIST)"
"to guide a biopsy (e.g. pleural biopsy for mesothelioma)"
"occult primary lesion (e.g. non-metastatic manifestation of neoplastic disease)"
"differentiate between radiation-induced necrosis and tumour recurrence (e.g. primary CNS malignancy)"