MRI Mock Registry Questions and
Answers Latest Version Already Passed
Which factor will help reduce susceptibility artifacts?
A. Using gradient echo sequences
B. Increasing TE
✔✔C. Using spin-echo sequences
D. Reducing receiver bandwidth
How does increasing TR affect T1-weighted images?
✔✔A. Reduces T1 contrast
B. Enhances T1 contrast
C. Decreases signal-to-noise ratio
D. Increases susceptibility artifacts
Which factor determines the number of slices in a multi-slice MRI acquisition?
✔✔A. Repetition time (TR)
B. Echo time (TE)
C. Flip angle
1
,D. Matrix size
What is the main advantage of susceptibility-weighted imaging (SWI)?
✔✔A. It enhances visualization of hemorrhages
B. It reduces scan time
C. It eliminates magnetic field inhomogeneities
D. It decreases T1 contrast
Which sequence is best for detecting demyelinating diseases like multiple sclerosis?
A. T1-weighted imaging
B. Diffusion-weighted imaging
✔✔C. FLAIR (Fluid-attenuated inversion recovery)
D. Time-of-flight (TOF)
How does increasing the echo time (TE) affect a T2-weighted image?
A. Reduces T2 contrast
B. Decreases signal-to-noise ratio
✔✔C. Enhances T2 contrast
2
,D. Shortens T1 relaxation
Which component of the MRI system is responsible for spatial localization of signals?
A. The RF coil
✔✔B. The gradient coils
C. The superconducting magnet
D. The cryogen system
What is the role of k-space in MRI?
✔✔A. It stores raw data before image reconstruction
B. It improves contrast resolution
C. It enhances gradient efficiency
D. It controls signal decay
What is the primary function of the RF coils in MRI?
A. To generate the main magnetic field
B. To apply gradient fields
✔✔C. To transmit and receive radiofrequency signals
3
, D. To cool the superconducting magnet
Which factor has the greatest impact on image contrast in T1-weighted imaging?
A. Echo time (TE)
B. Slice thickness
✔✔C. Repetition time (TR)
D. Number of signal averages (NEX)
Why is gradient echo imaging more susceptible to susceptibility artifacts?
A. It uses 90-degree excitation pulses
✔✔B. It lacks a 180-degree refocusing pulse
C. It has a longer repetition time
D. It reduces T1 contrast
What happens if the receiver bandwidth is increased?
A. Chemical shift artifacts increase
✔✔B. Signal-to-noise ratio decreases
C. Scan time increases
4
Answers Latest Version Already Passed
Which factor will help reduce susceptibility artifacts?
A. Using gradient echo sequences
B. Increasing TE
✔✔C. Using spin-echo sequences
D. Reducing receiver bandwidth
How does increasing TR affect T1-weighted images?
✔✔A. Reduces T1 contrast
B. Enhances T1 contrast
C. Decreases signal-to-noise ratio
D. Increases susceptibility artifacts
Which factor determines the number of slices in a multi-slice MRI acquisition?
✔✔A. Repetition time (TR)
B. Echo time (TE)
C. Flip angle
1
,D. Matrix size
What is the main advantage of susceptibility-weighted imaging (SWI)?
✔✔A. It enhances visualization of hemorrhages
B. It reduces scan time
C. It eliminates magnetic field inhomogeneities
D. It decreases T1 contrast
Which sequence is best for detecting demyelinating diseases like multiple sclerosis?
A. T1-weighted imaging
B. Diffusion-weighted imaging
✔✔C. FLAIR (Fluid-attenuated inversion recovery)
D. Time-of-flight (TOF)
How does increasing the echo time (TE) affect a T2-weighted image?
A. Reduces T2 contrast
B. Decreases signal-to-noise ratio
✔✔C. Enhances T2 contrast
2
,D. Shortens T1 relaxation
Which component of the MRI system is responsible for spatial localization of signals?
A. The RF coil
✔✔B. The gradient coils
C. The superconducting magnet
D. The cryogen system
What is the role of k-space in MRI?
✔✔A. It stores raw data before image reconstruction
B. It improves contrast resolution
C. It enhances gradient efficiency
D. It controls signal decay
What is the primary function of the RF coils in MRI?
A. To generate the main magnetic field
B. To apply gradient fields
✔✔C. To transmit and receive radiofrequency signals
3
, D. To cool the superconducting magnet
Which factor has the greatest impact on image contrast in T1-weighted imaging?
A. Echo time (TE)
B. Slice thickness
✔✔C. Repetition time (TR)
D. Number of signal averages (NEX)
Why is gradient echo imaging more susceptible to susceptibility artifacts?
A. It uses 90-degree excitation pulses
✔✔B. It lacks a 180-degree refocusing pulse
C. It has a longer repetition time
D. It reduces T1 contrast
What happens if the receiver bandwidth is increased?
A. Chemical shift artifacts increase
✔✔B. Signal-to-noise ratio decreases
C. Scan time increases
4
