ARRT MRI MOCK REGISTRY EXAM QUESTIONS WITH
COMPLETE SOLUTIONS GUARANTEED PASS
What is the process of removing the magnetic field in a
superconducting magnet, by expelling the cryogens that cool the
main magnet and can happen spontaneously by a leak and
sudden boil off the cryogens or be initiated by the MRI
technologist? - ANSWER ->Quench (or Quenching)
Superconducting magnets use liquid Helium (Cryogen) to cool
the Niobium Titanium
coils to approximately . - ANSWER
->4 degrees Kelvin
The will determine the number of lines filled
in k-space in each TR
period. - ANSWER ->Echo
train length
What refers to the amount of longitudinal magnetization
"flipped" into the transverse
,plane? - ANSWER -
>Flip angle
A flip angle of will result in the highest
amount of transverse
magnetization and MRI signal. -
ANSWER ->90°
VENC - ANSWER ->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
Decreases - ANSWER ->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
,Magnitude; direction - ANSWER ->A magnetic vector possesses
attributes of both and .
A. Strength; magnitude
B. Direction; purpose
C. Strength; flow
D. Magnitude; direction
Hydrogen - ANSWER ->What element in the body is the principal
nucleus utilized in clinical MR imaging?
A. Helium
B. Hydrogen
C. Oxygen
D. Calcium
A 180° pulse followed by a 90°/180° combination - ANSWER -
>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
Incoherent gradient echo - ANSWER ->Gradient echo sequences
requiring high si gnal 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
Eyes - ANSWER ->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
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 ti me,
an increase in overall SNR, but a decrease in spatial resolution. -
ANSWER -> 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
0.88mm - ANSWER ->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
COMPLETE SOLUTIONS GUARANTEED PASS
What is the process of removing the magnetic field in a
superconducting magnet, by expelling the cryogens that cool the
main magnet and can happen spontaneously by a leak and
sudden boil off the cryogens or be initiated by the MRI
technologist? - ANSWER ->Quench (or Quenching)
Superconducting magnets use liquid Helium (Cryogen) to cool
the Niobium Titanium
coils to approximately . - ANSWER
->4 degrees Kelvin
The will determine the number of lines filled
in k-space in each TR
period. - ANSWER ->Echo
train length
What refers to the amount of longitudinal magnetization
"flipped" into the transverse
,plane? - ANSWER -
>Flip angle
A flip angle of will result in the highest
amount of transverse
magnetization and MRI signal. -
ANSWER ->90°
VENC - ANSWER ->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
Decreases - ANSWER ->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
,Magnitude; direction - ANSWER ->A magnetic vector possesses
attributes of both and .
A. Strength; magnitude
B. Direction; purpose
C. Strength; flow
D. Magnitude; direction
Hydrogen - ANSWER ->What element in the body is the principal
nucleus utilized in clinical MR imaging?
A. Helium
B. Hydrogen
C. Oxygen
D. Calcium
A 180° pulse followed by a 90°/180° combination - ANSWER -
>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
Incoherent gradient echo - ANSWER ->Gradient echo sequences
requiring high si gnal 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
Eyes - ANSWER ->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
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 ti me,
an increase in overall SNR, but a decrease in spatial resolution. -
ANSWER -> 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
0.88mm - ANSWER ->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
