MRSO EXAM 1, EXAM 2, EXAM 3 AND EXAM 4

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MRSO EXAM 1, EXAM 2, EXAM 3 AND EXAM 4

NEWEST 2024 ACTUAL EXAM COMPLETE 300

QUESTIONS AND CORRECT DETAILED

ANSWERS (VERIFIED ANSWERS ) |ALREADY

GRADED A

MRSO EXAM 1

An object that produces a weakly repulsive force in the presence of a strong magnetic field is called what?

• Superparamagnetic
• Ferromagnetic
• Diamagnetic
• Paramagnetic - ANSWER- c. Diamagnetic

What are the risks associated with translational force?

• Missile effect
• Proximity heating
• Antenna effect
• Peripheral nerve stimulation - ANSWER- a. Missile effect
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Which of the following are recommended by the ACR guidance document in MR safety 2013 in proper scanning of a patient?

• Patient gown
• Written screening sheet
• Metal detector
• Ferromagnetic detection system - ANSWER-

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

• Heating
• Rotational force
• Translational force
• Magnetohydrodynamic effect
• Noise
• Peripheral nerve stimulation - ANSWER- e. Noise
• Peripheral nerve stimulation

Why is magnetic shielding used in an MR unit?

• To reduce heating
• To reduce the e-fields
• To maintain field homogeneity 2 / 4

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• To limit the fringe field - ANSWER- d. To limit the fringe

field

What document has established guidelines for MRI safety that are followed today?

• ACR white paper MRI safety
• HIPPA
• FDA guidelines of MRI
• OSHA - ANSWER- a. ACR white paper MRI safety

Pain at the injection site when gad contrast is administered is considered what?

• Anaphylaxis
• A non-allergic reaction
• None of the choices
• Allergic reaction - ANSWER- b. a non-allergic reaction

Normal kidneys should excrete all gad from a patient how quickly?

• 24 hours
• 6 hours 3 / 4

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• 12 hours
• 32 hours - ANSWER- a. 24 hours

Contrast media will do what to our tissue?

• Shorten T1 relaxation times
• Shorten T1 & T2 relaxation times
• Increase T2 relaxation times and decrease T1 relaxation times
• Shorten T2 relaxation times - ANSWER- b. Shorten T1 & T2

relaxation times

Resonance occurs when:

• The patient is placed in isocenter and only experiences the

static magnetic field.

• The radiofrequencies transmitted are different than the

precessional speed of hydrogen

• The radiofrequencies transmitted match the precessional

speed of hydrogen

• The radiofrequency is transmitted at 42.6 MHz - ANSWER-
• The radiofrequencies transmitted match the precessional

speed of hydrogen

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