1. What is the primary use of radioactive tracers in nuclear medicine?
A) To treat cancer
B) To diagnose and monitor diseases
C) To perform surgery
D) To prevent infections
Answer: B) To diagnose and monitor diseases
2. Which imaging technique uses a gamma camera to detect radiation emitted from a radioactive tracer?
A) Computed tomography (CT)
B) Magnetic resonance imaging (MRI)
C) Positron emission tomography (PET)
D) Single photon emission computed tomography (SPECT)
Answer: D) Single photon emission computed tomography (SPECT)
3. What type of radiation is commonly used in PET scans?
A) Alpha particles
B) Beta particles
C) Gamma rays
D) X-rays
Answer: C) Gamma rays
4. Which radiopharmaceutical is often used in myocardial perfusion imaging?
A) Technetium-99m (Tc-99m)
B) Iodine-131 (I-131)
C) Fluorine-18 (F-18)
D) Thallium-201 (Tl-201)
Answer: D) Thallium-201 (Tl-201)
5. What is the primary benefit of using nuclear medicine imaging over other imaging modalities?
A) Greater resolution of bone structures
B) Ability to visualize physiological processes in real time
C) Faster imaging time
D) Lower radiation dose
Answer: B) Ability to visualize physiological processes in real time
6. Which condition can be diagnosed using a bone scan in nuclear medicine?
A) Fractures
B) Liver tumors
C) Brain tumors
D) Heart disease
Answer: A) Fractures
7. What is the purpose of using contrast agents in nuclear medicine scans?
A) To enhance the image quality
B) To treat tumors
C) To reduce radiation exposure
D) To monitor blood pressure
Answer: A) To enhance the image quality
8. Which of the following is a common side effect of radiopharmaceuticals?
A) Nausea
B) Headache
C) Fatigue
D) Allergic reaction
Answer: D) Allergic reaction
9. In nuclear medicine, what does the term “half-life” refer to?
A) The time it takes for a radioactive substance to decay to half its original activity
B) The time it takes for a patient to recover from a scan
C) The time it takes for a contrast agent to be fully absorbed
D) The duration of the imaging procedure
Answer: A) The time it takes for a radioactive substance to decay to half its original activity
10. Which type of scan is commonly used to evaluate brain function and metabolism?
A) X-ray
B) MRI
C) PET scan
D) Ultrasound
Answer: C) PET scan