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MRSO: Exam mark Questions & 100% Correct Answers

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Which of the following describe when a non-ferrous object is repulsed by static magnetic field? a. Fourier transformation b. Lenz's force c. Ohm's law d. Larmor equation ~~> b. Lenz's force What is the FDA SAR limit for the whole body in first level controlled operating mode? a. 8 W/...

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  • 12 de septiembre de 2024
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1 | P a g e | © copyright 2024/2025 | Grade A+




MRSO: Exam mark Questions & 100%
Correct Answers
Which of the following describe when a non-ferrous object is repulsed by

static magnetic field?




a. Fourier transformation

b. Lenz's force

c. Ohm's law

d. Larmor equation

✓ ~~> b. Lenz's force




What is the FDA SAR limit for the whole body in first level controlled operating

mode?

a. 8 W/kg for 15 mins

b. 4 W/kg for 15 mins

c. 3 W/kg for 10 mins

d. 7 W/kg for 20 mins

✓ ~~> b. 4 W/kg for 15 mins




Gadolinium contains what kind of magnetism?


Master01 | September, 2024/2025 | Latest update

, 2 | P a g e | © copyright 2024/2025 | Grade A+



a. Diamagnetic

b. Paramagnetic

c. Ferromagnetic

d. Super paramagnetic

✓ ~~> b. Paramagnetic




Where will peripheral nerve stimulation be the strongest?




a. Further away from isocenter in the gantry

b. At the level of the table when it is advanced

c. At isocenter

d. Outside the gantry near the 5 gauss line

✓ ~~> a. Further away from the isocenter in the gantry




What is the name for the direction of the vector of the static magnetic field?

a. Inverse field

b. Equilibrium

c. B0

d. B1




Master01 | September, 2024/2025 | Latest update

, 3 | P a g e | © copyright 2024/2025 | Grade A+



✓ ~~> c. B0




An object that produces a weakly repulsive force in the presence of a strong

magnetic field is called what?

a. Superparamagnetic

b. Ferromagnetic

c. Diamagnetic

d. Paramagnetic

✓ ~~> c. Diamagnetic




The gradient coils are responsible for which of the following? Select all that

apply.

a. Heating

b. Rotational force

c. Translational force

d. Magnetohydrodynamic effect

e. Noise

f. Peripheral nerve stimulation

✓ ~~> e. Noise

f. Peripheral nerve stimulation




Master01 | September, 2024/2025 | Latest update

, 4 | P a g e | © copyright 2024/2025 | Grade A+




Why is magnetic shielding used in an MR unit?




a. To reduce heating

b. To reduce the e-fields

c. To maintain field homogeneity

d. To limit the fringe field

✓ ~~> d. To limit the fringe field




Contrast media will do what to our tissue?




a. Shorten T1 relaxation times

b. Shorten T1 & T2 relaxation times

c. Increase T2 relaxation times and decrease T1 relaxation times

d. Shorten T2 relaxation times

✓ ~~> b. Shorten T1 & T2 relaxation times




As blood flows through a vessel, currents can be induced. The degree of this

is called?




Master01 | September, 2024/2025 | Latest update

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