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ARRT MRI Mock Exam Registry With 100% Correct And Verified Answers
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ARRT MRI Mock Exam Registry With100% Correct And Verified 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?
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, 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
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,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
The energy used to form MRI images is ____________
the patient's tissues.
A. Emitted from
B. Attenuated by
C. Amplified from
D. Reflected off - Correct Answer-Emitted from
Referencing the Centers for Disease Control and
Prevention (CDC), what type of isolation
precautions should be used for HIV-positive patients in
the MRI suite?
A. Respiratory
B. Droplet
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, C. Standard (universal)
D. Enteric
E. Contact - Correct Answer-Standard (universal)
___________ 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
If the TR in a gradient echo sequence is less than the T2 (or T2*), the
resulting condition is known as:
A. Spin down
B. Steady state
C. Spin dephasement
D. Thermal equilibrium - Correct Answer-Steady state
Which type of blood cell is responsible for phagocytosis?
A. Leukocyte
B. Erythrocyte
C. Lymphocyte
D. Platelet - Correct Answer-Leukocyte
Which of the following, in an MRA sequence, aids in minimizing the loss of
signal due to dephasing within a voxel:
A. Long TE
B. Short TR
C. Smaller voxel size
D. Short TE
E. C and D - Correct Answer-C and D
In order to acquire an intracranial arterial blood flow sequence, a
presaturation pulse would be applied in which location?
A. Below the heart
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