ARRT MRI EXAM QUESTION BANK 2025
COMPLETE ACTUAL EXAM QUESTIONS WITH
DETAILED ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS
The readout gradient is usually turned on during the sampling or readout of the
peak echo and also during which other process?
A. Slice orientation selection
B. Slice selection
C. Phase encoding
D. Frequency encoding
E. Transmit bandwidth - ✔✔✔ Correct Answer > Frequency encoding
___________ could be used to line the walls and/or floors of the MR magnet
room to reduce the fringe field, and is defined as __________ shielding.
A. Copper; active
B. Steel; active
C. Copper; passive
D. Steel; passive
E. Lead; active - ✔✔✔ Correct Answer > Steel; passive
As the number of phase encodings is increased from 256 to 512, SNR (signal to
noise ratio):
,A. Increases
B. Decreases
C. Doubles
D. Does not change
E. Quadruples - ✔✔✔ Correct Answer > Decreases
Calculate the available imaging time for a patient with a heart rate of 90
beats/min, trigger window 15% and trigger delay of 80ms.
A. 487 ms
B. 567 ms
C. 667 ms
D. 787 ms - ✔✔✔ Correct Answer > 487 ms
Healthcare workers generally practice ___________, which states the "goal is to
do no harm."
A. Confidentiality
B. Beneficence
C. Res Ipsa Loquitor
D. Stare decisis
E. Negligence - ✔✔✔ Correct Answer > Beneficence
A magnetic vector possesses attributes of both __________ and _____________.
A. Strength; magnitude
B. Direction; purpose
C. Strength; flow
,D. Magnitude; direction - ✔✔✔ Correct Answer > Magnitude; direction
What element in the body is the principal nucleus utilized in clinical MR imaging?
A. Helium
B. Hydrogen
C. Oxygen
D. Calcium - ✔✔✔ Correct Answer > Hydrogen
Which of the following best describes an IR sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes - ✔✔✔ Correct Answer > A 180° pulse followed by a
90°/180° combination
Gradient echo sequences requiring high signal from fluid are known as all of the
following EXCEPT:
A. T2* gradient echo
B. Steady-state gradient echo
C. Coherent gradient echo
D. Incoherent gradient echo - ✔✔✔ Correct Answer > Incoherent gradient echo
The medial and lateral rectus muscles are located in the:
A. Ears
B. Posterior pelvic region
, C. Proximal calves
D. Eyes
E. Superior shoulder regions
F. Soft tissues of the neck - ✔✔✔ Correct Answer > Eyes
Reducing the number of lines filled in k-space will produce an image:
A. With a decrease in spatial resolution
B. With a increase in spatial resolution
C. With an decrease in overall SNR
D. With an increase in overall SNR
E. With a reduced overall scan time
F. B, C and E only
G. A, D and E only - ✔✔✔ Correct Answer > A, D and E only
Reducing the number of lines filled in k-space reduces the number of phase
encoding steps, resulting in shorter scan time, an increase in overall SNR, but a
decrease in spatial resolution.
The smallest object that can be resolved in an image acquired with a 24cm FOV
and a 272 x 272 matrix is _________ mm.
A. 0.76mm
B. 0.88mm
C. 0.93mm
D. 1.13mm
COMPLETE ACTUAL EXAM QUESTIONS WITH
DETAILED ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS
The readout gradient is usually turned on during the sampling or readout of the
peak echo and also during which other process?
A. Slice orientation selection
B. Slice selection
C. Phase encoding
D. Frequency encoding
E. Transmit bandwidth - ✔✔✔ Correct Answer > Frequency encoding
___________ could be used to line the walls and/or floors of the MR magnet
room to reduce the fringe field, and is defined as __________ shielding.
A. Copper; active
B. Steel; active
C. Copper; passive
D. Steel; passive
E. Lead; active - ✔✔✔ Correct Answer > Steel; passive
As the number of phase encodings is increased from 256 to 512, SNR (signal to
noise ratio):
,A. Increases
B. Decreases
C. Doubles
D. Does not change
E. Quadruples - ✔✔✔ Correct Answer > Decreases
Calculate the available imaging time for a patient with a heart rate of 90
beats/min, trigger window 15% and trigger delay of 80ms.
A. 487 ms
B. 567 ms
C. 667 ms
D. 787 ms - ✔✔✔ Correct Answer > 487 ms
Healthcare workers generally practice ___________, which states the "goal is to
do no harm."
A. Confidentiality
B. Beneficence
C. Res Ipsa Loquitor
D. Stare decisis
E. Negligence - ✔✔✔ Correct Answer > Beneficence
A magnetic vector possesses attributes of both __________ and _____________.
A. Strength; magnitude
B. Direction; purpose
C. Strength; flow
,D. Magnitude; direction - ✔✔✔ Correct Answer > Magnitude; direction
What element in the body is the principal nucleus utilized in clinical MR imaging?
A. Helium
B. Hydrogen
C. Oxygen
D. Calcium - ✔✔✔ Correct Answer > Hydrogen
Which of the following best describes an IR sequence?
A. A 180° pulse followed by a 90°/180° combination
B. A 90° pulse followed by a 180° pulse
C. A train of gradient echoes
D. A train of spin echoes - ✔✔✔ Correct Answer > A 180° pulse followed by a
90°/180° combination
Gradient echo sequences requiring high signal from fluid are known as all of the
following EXCEPT:
A. T2* gradient echo
B. Steady-state gradient echo
C. Coherent gradient echo
D. Incoherent gradient echo - ✔✔✔ Correct Answer > Incoherent gradient echo
The medial and lateral rectus muscles are located in the:
A. Ears
B. Posterior pelvic region
, C. Proximal calves
D. Eyes
E. Superior shoulder regions
F. Soft tissues of the neck - ✔✔✔ Correct Answer > Eyes
Reducing the number of lines filled in k-space will produce an image:
A. With a decrease in spatial resolution
B. With a increase in spatial resolution
C. With an decrease in overall SNR
D. With an increase in overall SNR
E. With a reduced overall scan time
F. B, C and E only
G. A, D and E only - ✔✔✔ Correct Answer > A, D and E only
Reducing the number of lines filled in k-space reduces the number of phase
encoding steps, resulting in shorter scan time, an increase in overall SNR, but a
decrease in spatial resolution.
The smallest object that can be resolved in an image acquired with a 24cm FOV
and a 272 x 272 matrix is _________ mm.
A. 0.76mm
B. 0.88mm
C. 0.93mm
D. 1.13mm
