Nuclear Medicine MCQs

What is the primary purpose of a PET scan in nuclear medicine?
- A) Assessing bone density
- B) Evaluating metabolic activity
- C) Imaging soft tissues
- D) Detecting fractures
Which radioactive isotope is commonly used in thyroid scans?
- A) Technetium-99m
- B) Iodine-123
- C) Gallium-67
- D) Fluorine-18
What is the main advantage of using technetium-99m in imaging?
- A) Short half-life
- B) Long half-life
- C) High radiation dose
- D) Invasive procedure
What type of imaging is primarily performed to detect bone metastases?
- A) MRI
- B) Bone scan
- C) CT scan
- D) X-ray
Which procedure uses a radioactive tracer to evaluate renal function?
- A) Renal scan
- B) Ultrasound
- C) CT scan
- D) MRI
What is the significance of the “hot spot” in a nuclear medicine scan?
- A) Normal tissue
- B) Increased tracer uptake indicating possible disease
- C) Absence of tracer
- D) Artifact
Which imaging technique is used to evaluate the function of the heart?
- A) MRI
- B) SPECT
- C) X-ray
- D) Ultrasound
What is the primary radiopharmaceutical used in a myocardial perfusion scan?
- A) Gallium-67
- B) Technetium-99m
- C) Iodine-131
- D) Fluorine-18
Which of the following conditions can be assessed using a gallium scan?
- A) Bone density
- B) Infection or inflammation
- C) Fractures
- D) Tumors
What does a “cold spot” indicate on a thyroid scan?
- A) Reduced uptake of tracer
- B) Normal function
- C) Increased uptake
- D) Artifact
In which condition is a DEXA scan primarily used?
- A) Evaluating heart function
- B) Assessing bone mineral density
- C) Imaging soft tissues
- D) Detecting tumors
What is the main risk associated with nuclear medicine procedures?
- A) Radiation exposure
- B) Allergic reactions
- C) Infection
- D) Invasive techniques
Which imaging study uses positron emission tomography?
- A) X-ray
- B) PET scan
- C) MRI
- D) CT scan
What is the primary use of Iodine-131 in nuclear medicine?
- A) Bone imaging
- B) Thyroid cancer treatment
- C) Cardiac stress testing
- D) Renal imaging
What does the term “radiopharmaceutical” refer to?
- A) A drug for pain relief
- B) A radioactive compound used for diagnosis or treatment
- C) A type of antibiotic
- D) A contrast agent
Which type of scan is best for detecting Alzheimer’s disease?
- A) CT scan
- B) PET scan with fluorodeoxyglucose (FDG)
- C) MRI
- D) X-ray
What is the half-life of technetium-99m?
- A) 6 hours
- B) 12 hours
- C) 6 hours
- D) 24 hours
What is the primary role of nuclear medicine in cancer management?
- A) Staging and monitoring treatment response
- B) Performing surgery
- C) Chemotherapy administration
- D) Radiation therapy
Which condition is primarily assessed with a V/Q scan?
- A) Stroke
- B) Pulmonary embolism
- C) Heart failure
- D) Kidney stones
What type of radiation is primarily emitted by PET scans?
- A) Alpha particles
- B) Positrons
- C) Beta particles
- D) Gamma rays
Which imaging study can assess the integrity of the blood-brain barrier?
- A) CT scan
- B) SPECT
- C) MRI
- D) X-ray
What is a common side effect of iodine-based radiopharmaceuticals?
- A) Fever
- B) Thyroid dysfunction
- C) Diarrhea
- D) Headache
Which imaging technique is considered safe for pregnant women?
- A) Ultrasound
- B) PET scan
- C) CT scan
- D) X-ray
What does “SPECT” stand for in nuclear medicine?
- A) Single Positron Emission Computed Tomography
- B) Single Photon Emission Computed Tomography
- C) Spectral Photon Emission Computed Tomography
- D) Standard Photon Emission Computed Tomography
Which condition can be diagnosed using a hepatobiliary scan?
- A) Gallbladder dysfunction
- B) Bone fractures
- C) Brain tumors
- D) Lung infections
What is a common use of a thyroid uptake scan?
- A) Determining thyroid function
- B) Imaging the lungs
- C) Assessing bone density
- D) Evaluating cardiac function
What type of imaging is used to assess for hyperparathyroidism?
- A) CT scan
- B) Sestamibi scan
- C) MRI
- D) Ultrasound
What is a potential contraindication for using Iodine-131?
- A) Hypothyroidism
- B) Pregnancy
- C) Old age
- D) History of cancer
Which tracer is commonly used for myocardial perfusion imaging?
- A) Iodine-123
- B) Technetium-99m sestamibi
- C) Gallium-67
- D) Fluorine-18
What is the purpose of a lung perfusion scan?
- A) Evaluating blood flow to the lungs
- B) Detecting lung infections
- C) Imaging lung tumors
- D) Assessing lung function

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