Exam (elaborations)
MRSO MOCK TEST 1 QUESTIONS AND ANSWERS
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MRSO MOCK TEST 1 QUESTIONS AND ANSWERS
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Name: Score:100 Multiple choice questions
Term 1 of 100
An object that produces a weak repulsive force in presence of a strong magnetic field is called
what?
Diamagnetic
Paramagnetic
Superparamagnetic
Ferromagnetic
Term 2 of 100
The noise hear in MRI is caused by which of the following?
Lorentz Force
The antenna effect
Larmor force
Ohms Force
Term 3 of 100
Pain at the injection site when gadolinium contrast is administered is considered what?
None of these choices
Anaphylaxis
An allergic reaction
A non-allergic reaction
,Term 4 of 100
Time-varying gradient magnetic fields are measured in which of the following?
dB/dx
Tesla
dB/dt
W/kg
Term 5 of 100
Which of the following describes when a non-ferrous, electrically conductive object is
repulsed by a static magnetic field?
Fourier Transfomation
Larmor equation
Lenz force
Ohms law
Term 6 of 100
The B1 refers to what?
The precessional speed of hydrogen
The radiofrequencies transmitted
The speed of the time varying gradient coils
The direction of the static field
,Term 7 of 100
Which of the following are not recommended by the ACR guidance document in MR safety
2013 in proper scanning of a patient?
Metal detector
Patient Gown
Written screening sheet
Ferromagnetic detection system
Term 8 of 100
Which of the following are considered non allergic reactions to gadolinium contrast media?
Select all that apply?
A. Headache
B. Pain at injection site
C. Emesis
D. Hives
B. Level 1 MR personnel
C. Nausea
A. Metal detector
A. Headache
B. Pain at injection site
C. Emesis
Term 9 of 100
Which of the following describes an electrical current produced in a wire when subjected to
an alternating magnetic field?
Ohms Law
Faradays law of induction
Lorenz force
Fourier Transformation
, Term 10 of 100
Which of the following are recommended by the ACR guidance in MR Safety 2013 in proper
scanning of a patient?
A. Metal Detector
B. Ferromagnetic detection system
C. Written screening sheet
D. Patient Gown
B. Faradays law
A. Headache
B. Pain at injection site
C. Emesis
B. Ferromagnetic
B. Ferromagnetic detection system
C. Written screening sheet
D. Patient Gown
Term 11 of 100
The FDA limits SAR in the head to what?
3.2 W/kg for 10 min
4 W/kg for 15 min
8 W/kg for 20 min
10 W/kg for 15 min
Term 12 of 100
Wire and leads can produce heat because they are what?
Magnetic
Reactive
Diamagnetic
Electrically conductive
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