FREE ABR Diagnostic Medical Physics Questions and Answers

Question 1

What is the primary mechanism of x-ray production in an x-ray tube?

Accepted Answer

Bremsstrahlung radiation

Answer

Photoelectric effect

Answer

Compton scattering

Answer

Pair production

Question 2

Which imaging modality uses Hounsfield units to represent tissue density?

Accepted Answer

CT

Answer

MRI

Answer

Ultrasound

Answer

Nuclear Medicine

Question 3

What does a modulation transfer function (MTF) measure in diagnostic imaging?

Accepted Answer

Spatial resolution

Answer

Contrast resolution

Answer

Temporal resolution

Answer

Noise

Question 4

Which of the following is the most effective method to reduce patient dose during fluoroscopic procedures?

Accepted Answer

Increasing source-to-skin distance

Answer

Increasing frame rate

Answer

Using a smaller focal spot

Answer

Decreasing tube voltage

Question 5

What is the purpose of beam filtration in diagnostic radiography?

Accepted Answer

Remove low-energy photons

Answer

Enhance spatial resolution

Answer

Improve image contrast

Answer

Increase patient dose