Quiz: Positron Emission Tomography

Which of the following radionuclides used in PET imaging produces the highest resolution images?

All of the following cellular mechanisms are responsible for malignant cells increased F-18 fluorodeoxyglucose accumulation EXCEPT:

The concentration of glucose-6-phosphatase, an enzyme mediating dephosphorylation of FDG-6-phosphate, is low in most tumors EXCEPT:

F-18 FDG uptake in tumors correlates with tumor:

All of the following scintigraphic methods are often used in the diagnosis of fever of unknown origin (FUO) EXCEPT:

The elevated serum glucose level at the time of fluorodeoxyglucose (FDG) administration may decrease the sensitivity of the FDG-PET study. Althoguh intravenous bolus of insulin may effectively lower the serum glucose level, however induced hyperinsulinemia will:

The time from F-18 fluorodeoxyglucose (FDG) administration to the time of data acquisition has been shown to have a marked effect on FDG uptake. An increased interval between the injection and imaging uptake time will DECREASE radiotracer concentration in:

Localizing metastatic disease in thyroid cancer patients with F-18 fluorodeoxyglucose (FDG) PET imaging is the primary clinical indication if:

The usefulness of F-18 FDG PET in infection imaging is based on the fact that granulocytes and macrophages in infectious foci:

A 65-year-old patient is referred for a brain PET/MR study. The referring physician reports placement of a titanium alloy brain clips for an intracranial aneurysm 5 years ago. Which of the following would be the most appropriate action regarding imaging this case?