FREE ABR Nuclear Medical Physics Questions and Answers

Question 1

What is the primary difference between positron emission tomography (PET) and single-photon emission computed tomography (SPECT)?

Accepted Answer

PET uses positrons and gamma rays for imaging

Answer

PET detects gamma radiation from a single photon

Answer

SPECT uses radioactive isotopes that emit positrons

Answer

SPECT involves the use of X-rays

Question 2

Which of the following isotopes is commonly used in PET imaging for detecting cancer?

Accepted Answer

Fluorine-18

Answer

Technetium-99m

Answer

Iodine-131

Answer

Cobalt-60

Question 3

What does the half-life of a radioisotope affect in nuclear medicine?

Accepted Answer

The duration of radiation exposure to the patient

Answer

The energy released by the isotope

Answer

The cost of producing the isotope

Answer

The imaging resolution

Question 4

What is the primary function of a gamma camera in nuclear medicine?

Accepted Answer

To detect gamma radiation emitted by radioactive tracers

Answer

To produce detailed CT images for fusion imaging

Answer

To deliver radiation therapy

Answer

To generate positron emissions

Question 5

In nuclear medicine, what does the term "uptake" refer to?

Accepted Answer

The process by which a radioactive isotope is absorbed by the target tissue

Answer

The amount of radiation absorbed by the body

Answer

The speed at which radiation decays

Answer

The energy level of the emitted radiation