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( )MRSO EXAM MARK WITH QUESTIONS AND 100% VERIFIED ANSWERS
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(2024-2025 )MRSO EXAM MARK WITH QUESTIONS AND 100%VERIFIED ANSWERS
Which of the following describes a nonferrous object being rejected by a static
magnetic field?
a. Fourier transformation
b. Lenz's Force
c. Ohm’s law
d. Larmor equation - ANSWER B. Lenz's Force
What is the FDA's SAR limit for the entire body in first-level controlled operating
mode?
a. 8 W/kg for 15 minutes.
b. 4 W/kg for 15 minutes.
c. 3 W/kg for ten minutes.
d. 7 W/kg for 20 minutes - ANSWER B. 4 W/kg for 15 minutes.
What kind of magnetism does Gadolinium have?
a. Diamagnetic
b. Paramagnetic
c. Ferromagnetic
d. Superparamagnetic - Answer b. Paramagnetic
,Where will peripheral nerve stimulation be strongest?
a. Moving out from the isocenter in the gantry
b. At the table's advanced level
c. At the isocenter
d. ANSWER A: Outside the gantry, near the 5 Gauss line. Moving away from the
isocenter in the gantry.
What is the name given to the static magnetic field's vector direction?
a. Inverse field.
b. Equilibrium
c. B0
d. B1 - ANSWER C. B0
What do you call an object that produces a weakly repulsive force when exposed to
a strong magnetic field?
a. Superparamagnetic
b. Ferromagnetic
c. Diamagnetic
d. Paramagnetic - Answer c. Diamagnetic
Which of the following are the gradient coils' responsibilities? Select all that apply.
a. Heating
b. Rotational Force
,c. Translational force
d. Magnetohydrodynamic effect.
e. Noise
f. Peripheral nerve stimulation - Answer e. Noise
f. Peripheral nerve stimulation.
Why is magnetic shielding employed in MR units?
a. To minimize heating.
b. To minimize e-fields.
c. To preserve field homogeneity.
d. To limit the peripheral field, answer d. To minimize the peripheral field.
What will contrast media do to our tissues?
a. Shorten the T1 relaxation times.
b. Shorten T1 and T2 relaxation times.
c. Increase T2 relaxation times while decreasing T1 relaxation periods.
d. Shorten T2 relaxation times - ANSWER B. Shorten T1 and T2 relaxation times.
Currents can be generated as blood flows through a vessel. What is this degree
known as?
, a. Magnetophosphenes
b. Flow Potential
c. Translational forces
d. ANSWER B: Fringe field. Flow Potential
What do the T-waves in the cardiac cycle represent?
a. Heart Repolarization
b. Heart depolarization
c. None of the options
d. Arrhythmia: Answer a. Heart Repolarization
NSF is caused by what?
a. When the patient has an allergy to gad contrast
b. The liver excretes gad ions.
c. When gad ions are swiftly eliminated from the body.
d. When a gad ion separates from its ligand and remains in the body - ANSWER D.
When a gad ion is released from the ligand and remains in the body.
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