MRSO Questions & Correct Revised
Answers
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
Answers
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
