ARRT MRI Mock Registry Exam Questions
With Correct Answers
When imaging a geriatric patient, while performing a PCA MRA
|| || || || || || || || || ||
sequence, what imaging parameter might the operator adjust?
|| || || || || || ||
|| A. Field of view
|| || ||
|| B. Presaturation band location
|| || ||
|| C. Slice thickness
|| ||
|| D. VENC
||
|| E. Contrast injection rate - CORRECT ANSWER✔✔-VENC
|| || || || || ||
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
|| || || ||
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 ||
|| E. 1.24mm - CORRECT ANSWER✔✔-0.88mm
|| || || ||
To produce an image based on differences in T1, the time interval
|| || || || || || || || || || || ||
between 90° excitation pulses should be:
|| || || || ||
|| A. Long ||
|| B. Short ||
|| C. Refocussed
||
|| D. Inverted - CORRECT ANSWER✔✔-Short
|| || || ||
With Correct Answers
When imaging a geriatric patient, while performing a PCA MRA
|| || || || || || || || || ||
sequence, what imaging parameter might the operator adjust?
|| || || || || || ||
|| A. Field of view
|| || ||
|| B. Presaturation band location
|| || ||
|| C. Slice thickness
|| ||
|| D. VENC
||
|| E. Contrast injection rate - CORRECT ANSWER✔✔-VENC
|| || || || || ||
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
|| || || ||
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 ||
|| E. 1.24mm - CORRECT ANSWER✔✔-0.88mm
|| || || ||
To produce an image based on differences in T1, the time interval
|| || || || || || || || || || || ||
between 90° excitation pulses should be:
|| || || || ||
|| A. Long ||
|| B. Short ||
|| C. Refocussed
||
|| D. Inverted - CORRECT ANSWER✔✔-Short
|| || || ||
