MRI Registry Review Questions with 100 Verified

MRI Registry Review Questions with 100% Verified Correct Answers Which type of flow has a constant velocity across the vessel?

• Plug
• Stagnant
• Laminar
• Vortex
• Turbulent - Correct Answer A

Which type of flow occurs in the center of the vessel?

• Plug
• Stagnant
• Laminar
• Vortex
• Turbulent - Correct Answer C

Which type of flow travels at different velocities in the vessels?

• Plug
• Stagnant
• Laminar
• Vortex
• Turbulent - Correct Answer E

Which type of flow starts out as laminar flow but becomes erratic as it passes through the stricture in the vessel?

• Plug
• Stagnant 1 / 4

• Laminar
• Vortex
• Turbulent - Correct Answer D

Which type of flow moves very slow?

• Plug
• Stagnant
• Laminar
• Vortex
• Turbulent - Correct Answer B

Which of the following flow mechanisms is often termed the 1st order of motion?

• Laminar flow
• Jerk motion
• Accelerated motion
• None of the above - Correct Answer A

Which of the following flow mechanisms is often termed the 2nd order of motion?

• Laminar flow
• Jerk motion
• Accelerated motion
• None of the above - Correct Answer C

Which of the following flow mechanisms is often termed the 3rd order of motion?

• Laminar flow
• Jerk motion
• Accelerated motion 2 / 4

• None of the above - Correct Answer B

Which of the following flow mechanisms, at the present time, is the only flow that can be compensated for?

• Laminar flow
• Jerk motion
• Accelerated motion
• None of the above - Correct Answer A

All the following are flow phenomena except?

• Time of Flight (TOF)
• Entry Slice
• Slow Flow
• Intra-voxel Dephasing - Correct Answer C

In order to produce a MRI signal, the nuclei must only receive an excitation pulse.

• True
• False - Correct Answer B - nuclei must receive an excitation pulse and a rephasing pulse or gradient

reversal _______ flow phenomena occurs when nuclei move, between the application of the excitation pulse and the rephasing of the magnetization, and do not receive both of these experiences.

• Time of Flight (TOF)
• Entry Slice
• Slow Flow
• Intra-voxel Dephasing - Correct Answer A

In the TOF phenomena, which of the following occurs during a spin echo sequence? 3 / 4

• Signal void
• Signal enhancements
• A and B
• None of the above - Correct Answer A

In the TOF phenomena, which of the following occurs during a gradient echo sequence?

• Signal void
• Signal enhancements
• A and B
• None of the above - Correct Answer B

Which of the following increases the TOF phenomena in the spin echo sequence?

• Increase velocity of nuclei

b Decrease velocity of nuclei - Correct Answer A Which of the following increases the TOF phenomena in the spin echo sequence?

• Increase TE (long echo times)
• Decrease TE (short echo times) - Correct Answer A

Which of the following increases the TOF phenomena in the spin echo sequence?

• Increase slice thickness
• Decrease slice thickness - Correct Answer B

Which of the following increases the TOF phenomena in a gradient echo sequence?

• / 4