Radioisotopes in medical imaging MCQs

u930973931_answers

4 months ago

What is the primary use of technetium-99m in medical imaging?
- A) Single photon emission computed tomography (SPECT)
- B) Positron emission tomography (PET)
- C) Magnetic resonance imaging (MRI)
- D) X-ray imaging
Which radioisotope is commonly used for thyroid imaging?
- A) Iodine-123
- B) Carbon-14
- C) Strontium-89
- D) Fluorine-18
What type of radiation does gallium-67 emit?
- A) Beta particles
- B) Gamma rays
- C) Alpha particles
- D) Neutrons
Which radioisotope is used in PET scans to evaluate glucose metabolism?
- A) Carbon-11
- B) Fluorine-18
- C) Iodine-131
- D) Technetium-99m
What is the half-life of technetium-99m?
- A) 6 hours
- B) 6 hours and 1 minute
- C) 12 hours
- D) 24 hours
What is the primary advantage of using iodine-131 in medical imaging?
- A) Therapeutic effects
- B) Short half-life
- C) Low cost
- D) Minimal side effects
What is the primary application of indium-111 in nuclear medicine?
- A) Labeling white blood cells
- B) Bone scanning
- C) Thyroid imaging
- D) Cardiac imaging
Which radioisotope is commonly used for bone scans?
- A) Technetium-99m
- B) Technetium-99 (as MDP)
- C) Iodine-123
- D) Gallium-67
What is the primary use of xenon-133 in medical imaging?
- A) Lung ventilation studies
- B) Bone imaging
- C) Brain perfusion studies
- D) Thyroid function tests
Which radioisotope is commonly used for liver and spleen scans?
- A) Technetium-99m
- B) Iodine-131
- C) Gallium-67
- D) Indium-111
Which radioisotope has a half-life of approximately 20 minutes and is used in PET imaging?
- A) Carbon-11
- B) Fluorine-18
- C) Iodine-123
- D) Gallium-67
What is the main disadvantage of using iodine-131 for imaging?
- A) High radiation dose
- B) Short half-life
- C) High cost
- D) Limited availability
What is the primary application of fluorine-18 in PET scans?
- A) Imaging bone lesions
- B) Evaluating metabolic activity
- C) Thyroid imaging
- D) Cardiac stress testing
What type of radiation does phosphorus-32 emit?
- A) Beta particles
- B) Gamma rays
- C) Alpha particles
- D) Neutrons
Which radioisotope is typically used for cardiac imaging?
- A) Technetium-99m
- B) Iodine-131
- C) Gallium-67
- D) Indium-111
What is the primary use of rubidium-82 in medical imaging?
- A) Cardiac PET imaging
- B) Bone imaging
- C) Lung imaging
- D) Thyroid imaging
Which radioisotope is often used for gastrointestinal bleeding scans?
- A) Iodine-123
- B) Technetium-99m (as pertechnetate)
- C) Gallium-67
- D) Strontium-89
What is the half-life of iodine-123?
- A) 8 days
- B) 13 hours
- C) 24 hours
- D) 6 hours
Which radioisotope is used in radioimmunotherapy for cancer treatment?
- A) Iodine-131
- B) Technetium-99m
- C) Gallium-67
- D) Strontium-89
What is the primary function of gallium-67 in imaging?
- A) Thyroid scans
- B) Detecting infections and tumors
- C) Cardiac imaging
- D) Bone density measurement
Which isotope is used for assessing renal function?
- A) Technetium-99m (as MAG3 or DTPA)
- B) Iodine-131
- C) Gallium-67
- D) Strontium-89
What type of imaging is often performed with thallium-201?
- A) Cardiac stress testing
- B) Lung imaging
- C) Bone imaging
- D) Thyroid imaging
What is a common application of strontium-89?
- A) Palliative treatment for bone pain
- B) Imaging of soft tissues
- C) Detecting infections
- D) Thyroid function tests
Which radioisotope is utilized for assessing brain perfusion in nuclear medicine?
- A) Technetium-99m
- B) Xenon-133
- C) Iodine-123
- D) Gallium-67
Which of the following radioisotopes is used in thyroid ablation therapy?
- A) Iodine-123
- B) Iodine-131
- C) Fluorine-18
- D) Technetium-99m
Which radioisotope is primarily used for labeling monoclonal antibodies?
- A) Indium-111
- B) Technetium-99m
- C) Iodine-131
- D) Gallium-67
What is the primary imaging technique used with carbon-14?
- A) CT scans
- B) Radioactive dating and tracing metabolic processes
- C) MRI
- D) Bone scanning
What is the significance of lutetium-177 in medical imaging?
- A) Thyroid imaging
- B) Targeted radionuclide therapy
- C) Bone imaging
- D) Cardiac imaging
What is a common application of selenium-75 in nuclear medicine?
- A) Lung imaging
- B) Breast imaging
- C) Cardiac imaging
- D) Thyroid imaging
Which radioisotope is typically used for evaluating gallbladder function?
- A) Technetium-99m (HIDA scan)
- B) Iodine-123
- C) Gallium-67
- D) Strontium-89