Question 1

Which of the following is NOT a type of MRA?

Accepted Answer

Diffusion weighted

Answer

Contrast-Enhanced (CE)

Answer

Time of Flight (TOF)

Answer

Phase Contrast (PC)

Question 2

What is the primary advantage of TOF MRA?

Accepted Answer

It does not require contrast agents

Answer

It provides real time imaging

Answer

It is the fastest imaging method

Answer

It is best for large blood vessels

Question 3

What is the primary purpose of Magnetic Resonance Angiography (MRA)?

Accepted Answer

To visualize blood vessels and assess blood flow

Answer

To capture images of the body's organs

Answer

To detect brain activity during sleep

Answer

To measure the heart's electrical activity

Question 4

What is the main function of gadolinium in CE MRA?

Accepted Answer

To enhance blood vessel visibility

Answer

To suppress background noise

Answer

To align hydrogen atoms

Answer

To reduce scan time

Question 5

True or False: Phase-Contrast MRA is particularly useful for evaluating blood flow velocity and direction.

Accepted Answer

True

Answer

False

Question 6

True or False: One major limitation of TOF MRA is that it struggles to capture slow-moving blood flow.

Accepted Answer

True

Answer

False

Question 7

Which imaging technique is best suited for patients who cannot receive contrast agents due to kidney disease?

Accepted Answer

bSSFP or TOF MRA

Answer

Diffusion Weighted MRA

Answer

Phase Contrast MRA

Answer

Contrast Enhanced MRA

Question 8

What is a major limitation of PC MRA compared to TOF MRA?

Accepted Answer

PC MRA requires longer scan times and is more sensitive to motion artifacts.

Answer

PC MRA provides lower resolution images

Answer

PC MRA does not work for slow-moving blood

Answer

PC MRA requires contrast agents

Question 9

How does respiratory motion affect MRA scans, and what technique can be used to minimize its impact?

Accepted Answer

It causes blurry images and misalignment of blood vessels; breath-holding, respiratory gating, and navigator echoes can help.

Answer

It makes contrast agents ineffective; faster scanning speeds are the only solution

Answer

It improves image contrast; patients are encouraged to breathe normall

Answer

It has no significant effect on MRA imaging

Question 10

Compare MRA and CTA. What is one major advantage of MRA over CTA?

Accepted Answer

MRA does not use ionizing radiation, making it safer than CTA

Answer

Higher resolution for fine vascular detail

Answer

MRA requires contrast in all cases, while CTA does not

Answer

MRA is significantly cheaper than CTA

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