FRCR FRCR Nuclear Medicine

Question 1

In a bone scan, which radiopharmaceutical is most commonly used?

Accepted Answer

Technetium-99m methylene diphosphonate (MDP)

Answer

Thallium-201 chloride

Answer

Gallium-67 citrate

Answer

Iodine-123 MIBG

Question 2

FDG-PET exploits which metabolic characteristic of tumor cells?

Accepted Answer

Increased glucose uptake and glycolysis (Warburg effect)

Answer

Increased oxygen consumption

Answer

Enhanced protein synthesis

Answer

Elevated lipid turnover

Question 3

Which nuclear medicine study is used to evaluate renal tubular function and obstruction?

Accepted Answer

Tc-99m MAG3 renogram

Answer

Tc-99m DTPA scan

Answer

Tc-99m DMSA scan

Answer

Tc-99m GH scan

Question 4

In a ventilation-perfusion (V/Q) scan, a high-probability result for pulmonary embolism requires:

Accepted Answer

Two or more large segmental perfusion defects with normal ventilation

Answer

Any perfusion abnormality

Answer

Matched V/Q defects

Answer

Small subsegmental defects

Question 5

Sentinel lymph node mapping in breast cancer most commonly uses which combination?

Accepted Answer

Tc-99m sulfur colloid + blue dye

Answer

FDG-PET alone

Answer

Tc-99m MIBI

Answer

Gallium-68 PSMA

Question 6

Which radionuclide therapy is used for differentiated thyroid cancer after thyroidectomy?

Accepted Answer

Iodine-131 (radioiodine)

Answer

Yttrium-90

Answer

Lutetium-177

Answer

Radium-223