Which of the following is true if we increase the field of view from 200mm to 400mm?
a. We reduce patient heating
b. We use a stronger time-varying gradient magnetic field
c. We use a weak time-varying gradient magnetic field
d. We increase the patient heating - Answer c. We use a weak time-var...
MRSO Exam with Questions & 100% Correct
Answers
Which of the following is true if we increase the field of view from 200mm to 400mm?
a. We reduce patient heating
b. We use a stronger time-varying gradient magnetic field
c. We use a weak time-varying gradient magnetic field
d. We increase the patient heating - Answer c. We use a weak time-varying magnetic
field.
Larger field of views will produce lower resolution exams. The size of the field of view is
dependent on the frequency encoding gradient coil. When we increase the field of view,
we decrease the amplitude of our gradient coil.
When a T1 weighted image is taken of a vial of gad contrast, it will appear how?
a. Bright
b. Dark
c. Gray
d. Blue - Answer b. Dark
Active shield is performed how?
a. Nothing is used with active shielding
b. A magnetically conductive material surrounds the MR unit and this shapes and
contains the magnetic field
,c. Bricks of permanent magnets are stacked around the MR unit to contain the fringe
field
d. A coil of wire in the MR unit has a current running through it which produces a
magnetic field opposing the B0 - Answer d. A coil of wire in the MR unit has a current
running through it which produces a magnetic field opposing the B0.
A coil of wire is used with a current of wire running through it to produce a magnetic
field. This is placed opposing the vector of the static magnetic field. This will cancel out
some of the magnetic field felt outside of the gantry.
Which of the following is the most common symptom post-gad contrast injection?
a. Hives
b. Swelling
c. Emesis
d. Headache - Answer d. Headache
Which of the following are considered anaphylactoid reactions?
a. Tachycardia
b. Hives
c. Difficulty breathing
d. Abdominal pain - Answer a, c
Which of the following are true? Select all the correct answers.
a. MRI promotes female offspring in working MR technologists
, b. MRI can cause infertility
c. None
d. MRI has been associated with teratogenesis
e. MRI can cause an increase in spontaneous abortion - Answer c. None
Which of the following considerations for pregnancy are found in MRI? Select all that
apply.
a. Pregnant patients can be scanned in their first, second and third trimester
b. Contrast media is safe to be delivered
c. A pregnant MR tech may enter the zone IV, but not be present during acquisition
d. When an ultrasound exam will not help in diagnosing the patient. - Answer a, c, d
Contrast media has been detected across the blood/placenta barrier.
Which of the following are true of non-MR personnel?
a. They must understand the MR environment
b. They must pass an MR safety screening process before entering Zone III
c. They must pass a MR safety screening process before entering Zone IV
d. They may enter Zone III for any reason, but cannot enter Zone IV - Answer b. They
must pass an MR safety screening process before entering Zone III
Which of the following can freely enter Zone III and IV, but not escort a patient into
these zones?
a. MR personnel level I
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