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ARRT REVIEW - MRI REGISTRY
REVIEW PROGRAM EXAM 2025 |NEW
UPDATED QUESTIONS AND 100%
VERIFIED ANSWERS
An RF pulse of what flip angle will maximize the component of the net
magnetization projected into the transverse plane?
a. 180
b. 120
c. 90
d. 45 - CORRECT-ANSWER-c.
T1 relaxation refers to ____ relaxation.
a. spin-spin
b. longitudinal
c. phase
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d. transverse - CORRECT-ANSWER-b.
Which of the following statements is false?
a. T1 relaxation refers to longitudinal recovery of magnetization while T2
relaxation refers to the transverse decay of magnetization
b. T1 relaxation and T2 relaxation occur simultaneously
c. echoes collected in the transverse plane demonstrate only T2 relaxation
differences
d. T2 relaxation occurs much more quickly than T1 relaxation - CORRECT-
ANSWER-c.
If the precessional frequency of the patient's protons is approximately 21 MHz,
what magnetic field strength is being experienced by the patients protons? -
CORRECT-ANSWER-Larmor frequency equation
W0= B0 x Y
21= 42.6 x (X)
21/42.6 = .4929 (round) = 0.5T
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Which of the following is the definition of T1 relaxation?
a. the time is takes the net longitudinal magnetization of protons to grow 63% of
its final amplitude
b. the time at which is takes the transverse magnetization has decayed 63% of its
full value - CORRECT-ANSWER-a.
Based on the graph of longitudinal relaxation shown above, which of the
following would have the brightest signal intensity on T1 image?
a. bone marrow
b. intervertebral disk
c. CSF
d. muscle
(post test 1; page 1) - CORRECT-ANSWER-a.
Based on the graph of longitudinal relaxation shown above, which of the
following would have the shortest T1 relaxation time?
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a. bone marrow
b. intervertebral disk
c. CSF
d. muscle
(post test 1; page 1) - CORRECT-ANSWER-a.
The edema associated with pathology in the brain has a much longer T2
relaxation time than surrounding normal brain tissue. On a T2 image, what does
this result in?
a. isointense between edema and surrounding normal brain tissue
b. a low signal intensity in the area of edema
c. a signal void in the area of edema
d. a high signal intensity in the area of edema - CORRECT-ANSWER-d.
Which of the following dephasing mechanisms affects the size of the resulting
spin echo?
a. magnetic field inhomogenities
ARRT REVIEW - MRI REGISTRY
REVIEW PROGRAM EXAM 2025 |NEW
UPDATED QUESTIONS AND 100%
VERIFIED ANSWERS
An RF pulse of what flip angle will maximize the component of the net
magnetization projected into the transverse plane?
a. 180
b. 120
c. 90
d. 45 - CORRECT-ANSWER-c.
T1 relaxation refers to ____ relaxation.
a. spin-spin
b. longitudinal
c. phase
, Page |2
d. transverse - CORRECT-ANSWER-b.
Which of the following statements is false?
a. T1 relaxation refers to longitudinal recovery of magnetization while T2
relaxation refers to the transverse decay of magnetization
b. T1 relaxation and T2 relaxation occur simultaneously
c. echoes collected in the transverse plane demonstrate only T2 relaxation
differences
d. T2 relaxation occurs much more quickly than T1 relaxation - CORRECT-
ANSWER-c.
If the precessional frequency of the patient's protons is approximately 21 MHz,
what magnetic field strength is being experienced by the patients protons? -
CORRECT-ANSWER-Larmor frequency equation
W0= B0 x Y
21= 42.6 x (X)
21/42.6 = .4929 (round) = 0.5T
, Page |3
Which of the following is the definition of T1 relaxation?
a. the time is takes the net longitudinal magnetization of protons to grow 63% of
its final amplitude
b. the time at which is takes the transverse magnetization has decayed 63% of its
full value - CORRECT-ANSWER-a.
Based on the graph of longitudinal relaxation shown above, which of the
following would have the brightest signal intensity on T1 image?
a. bone marrow
b. intervertebral disk
c. CSF
d. muscle
(post test 1; page 1) - CORRECT-ANSWER-a.
Based on the graph of longitudinal relaxation shown above, which of the
following would have the shortest T1 relaxation time?
, Page |4
a. bone marrow
b. intervertebral disk
c. CSF
d. muscle
(post test 1; page 1) - CORRECT-ANSWER-a.
The edema associated with pathology in the brain has a much longer T2
relaxation time than surrounding normal brain tissue. On a T2 image, what does
this result in?
a. isointense between edema and surrounding normal brain tissue
b. a low signal intensity in the area of edema
c. a signal void in the area of edema
d. a high signal intensity in the area of edema - CORRECT-ANSWER-d.
Which of the following dephasing mechanisms affects the size of the resulting
spin echo?
a. magnetic field inhomogenities
