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MRSO FINAL EXAM (ACTUAL / ) WITH
QUESTIONS AND VERIFIED ANSWERS
How do magnetic flux lines travel?
- North to South
- South to North
- East to West
- West to East
A North to South
Which of the following can be potential safety concerns to a patient in the static magnetic field?
- Electrically conductive materials
- Ferrous objects
- Magnetic objects
- All of the choices.
- All of the choices
- / 4
When RF energy is emitted, Faraday's low of induction says that____ can be created in electrically conductive materials?
- Rotational forces
- Translational forces
- Electrical fields
- None of the choices
- Electrical fields
Electrical fields can only be produced in objects that are what?
- Plastic
- Exposed to RF fields
- Small
- Ferromagnetic
- Exposed to RF fields
Which of the following is used to estimate body heating?
A. SAR
- Decibels
- Hertz
- Watts 2 / 4
A. SAR
Using a fan to cool a patient is an example of which of the following?
- Conduction
- Evaporation
- Radiation
- Convection
- Convection
Which of the following should be avoided when trying to lower the SAR?
- Gradient echo
- Spin echo
- Increasing the number of concantenations
- None of these choices
B.Spin echo
What does increasing the echo spacing mean?
- Increasing the distance between excitation pulses. 3 / 4
- Increasing the distance between the signals collected.
- Increasing the distance between slices.
- Factoring in the distance between patient thickness.
- Increasing the distance between the signals collected.
A type of burn caused when the patients skin is found in the near field is called what?
- Loop burn
- Reflective
- Resonant
- Proximity
- Proximity
What kind of burn is caused by placing a thermal blanket on a patient?
- Loop
- Reflective
- Resonant
- Proximity
- Reflective
- / 4
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