MRSO Questions & Correct Revised
Answers
In which ways an a patient self regulate their temperature when they overheat? -
answerEvaporation, Radiation
Which of the following statements are true when discussing MR safety
Larger patients will heat up most
Smaller patients heat up most
Larger p...
In which ways an a patient self regulate their temperature when they overheat? -
answer✔✔Evaporation, Radiation
Which of the following statements are true when discussing MR safety
Larger patients will heat up most
Smaller patients heat up most
Larger patients are ferromagnetic
Induction only occurs in smaller patients - answer✔✔Larger patients will heat up the most
Which of the following personnel can enter zone 3 and 4 but can't escort and patient into zone 4 -
answer✔✔MR personnel level 1
Which of the following describes the total dose of energy that a tissue receives during an entire
exam? - answer✔✔Specific energy dose
How many gauss are in 1 Tesla? - answer✔✔10,000
Where is cryogen primarily located? - answer✔✔In the MR unit
According to the ACR Manual on MRI safety 2020, what zone is the quench pipe located
OUTSIDE a facility? - answer✔✔Zone 3
What type of MR unit uses a coil of wire with a current running through it and a cryogenic to
help produce a strong magnetic field? - answer✔✔Superconducting magnet
A patient begins to sneeze uncontrollably immediately after an injection of gadolinium contrast?
This could be considered what? - answer✔✔Allergic reaction
According to the ACR Manual on MR safety 2020, in what zone is the MR unit found -
answer✔✔Zone 4
Which of the following is true of non-MR personnel according to the ACR Manual on MR safety
2020? - answer✔✔They must pass an MR safety screening process before entering zone 3
Which of the following will determine the amount of heating that a patient will receive? -
answer✔✔Pulse sequence used, patients overall surface area, patient mass
After approximately _____ the magnetic field reaches zero - answer✔✔3-5 minutes
How much more heating does a 360 degree RF pulse have than a 180 degree RF pulse? -
answer✔✔4 times more
A tester magnet should be how strong according to the ACR Manual on MR safety 2020? -
answer✔✔Equal or greater than 1000 gauss
What is the risk of a non-ferrous pain pump? - answer✔✔Lenz's force
Which of the following answers best describes an electrical current when exposed to electrically
conductive material? - answer✔✔Faraday's law of induction
The gradient coils are responsible for which of the following? - answer✔✔Noise, peripheral
nerve stimulation
The T wave in the cardiac cycle represents what? - answer✔✔Heart repolarization
How would gadolinium appear on a T1 weighted image? - answer✔✔Bright
Emesis after a contrata media reaction is considered what kind of adverse reaction? -
answer✔✔A non-allergic reaction to contrast media
When a patient undergoes an MR exam and starts to perspire, what method is the body using to
regulate the increased temperature? - answer✔✔Evaporative cooling
Which of the following are NOT recommended by the ACR Manual on MRI safety 2020? -
answer✔✔Metal detector
When electrical fields are produced in implants, the process of ___ heating can result -
answer✔✔Ohmic
Which of the following can reduce the risk of Lenz's force with implanted devices in our patient?
- answer✔✔Advance the patient slowly into the MR unit
A patient will change into a gown in most hospital settings within this zone, according to the
ACR Manual on MRI safety 2020 - answer✔✔Zone 2
Cryogen is designed to escape from the MR room through what? - answer✔✔Quench vent
An area that is outside of any MR department and is accessible to the general public is called
what according to the ACR Manual on MR Safety 2020 - answer✔✔Zone 1
What is the cryogen used in MRI? - answer✔✔Helium
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