ARRT MRI Mock Registry Exam
Questions and Answers (Latest
Update 2026)
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
_____________.
,ARRT MRI Mock Registry Exam
Questions and Answers (Latest
Update 2026)
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
,ARRT MRI Mock Registry Exam
Questions and Answers (Latest
Update 2026)
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
, ARRT MRI Mock Registry Exam
Questions and Answers (Latest
Update 2026)
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
Questions and Answers (Latest
Update 2026)
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
_____________.
,ARRT MRI Mock Registry Exam
Questions and Answers (Latest
Update 2026)
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
,ARRT MRI Mock Registry Exam
Questions and Answers (Latest
Update 2026)
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
, ARRT MRI Mock Registry Exam
Questions and Answers (Latest
Update 2026)
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
