MRSO MOCK EXAM 2 WITH PRECISE DETAILED || || || || || || ||
SOLUTIONS
Which of the following situations would promote the highest risk of an object reacting to
|| || || || || || || || || || || || || || ||
the static magnetic field?
|| || ||
1. A 5 foot seven inpatient for brain MRI with a lumbar fusion.
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2. All of the choices are a risk.
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3. A 5 foot seven impatient for lumbar spine with an unknown G.I. clip.
|| || || || || || || || || || || || ||
4. A 5 foot nine inpatient for a cervical spine MRI with an unknown cardiac stent. - ✔✔3.
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Arrythmogenesis potential can be produced at which of the following || || || || || || || || ||
1. Scanning a cardiac MRI with a heart valve.
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2. Scanning in the abdomen with a cardiac stent
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3. Scanning a brain with retain cardiac leads.
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4. Scanning a foot with a transmit receive coil. - ✔✔Scanning a brain with a retained
|| || || || || || || || || || || || || || || ||
cardiac leads ||
An object that is electrically conductive, but not Ferris is moving through the magnetic
|| || || || || || || || || || || || || ||
spatial gradient. Opposing magnetic forces are produced in that object. This can be
|| || || || || || || || || || || || ||
explained by what - ✔✔Lenz force || || || || ||
Which of the following slew rates will describe a faster changing time varying gradient?
|| || || || || || || || || || || || ||
1. 100 T/m/s
|| ||
2.125
3.150
4.200 - ✔✔200 || ||
,Heating in our patient is dependent on which of the following? Select all that apply.
|| || || || || || || || || || || || || ||
1. Management of heating to expose tissue.
|| || || || || ||
2. Tissue conductivity.
|| ||
3. Tissue permittivity.
|| ||
4. Slice thickness. - ✔✔1,2,3
|| || || ||
Which of the following can be used as a heat sink?
|| || || || || || || || || ||
1. A piece of 100% cloth.
|| || || || ||
2. A piece of aluminum foil.
|| || || || ||
3. A 1 cm pad.
|| || || ||
4. An ice pack. - ✔✔Ice pack
|| || || || || ||
An obese patient has tissue pressed against the side of the bore. What burn is the patient at
|| || || || || || || || || || || || || || || || || ||
risk of? - ✔✔Proximity burn
|| || || ||
You have reached your limit and cannot continue scanning what can be done to reduce
|| || || || || || || || || || || || || || ||
your SAR ||
1. Add more slices.
|| || ||
2. Decrease receiving bandwidth.
|| || ||
3. Increase flip angle.
|| || ||
4. Decrease TE. - ✔✔Decrease receiving bandwidth
|| || || || || ||
A patient has a hip replacement and is undergoing an MRI exam of the hip. What could
|| || || || || || || || || || || || || || || || ||
happen - ✔✔Production of hotspots around the implant
|| || || || || || ||
____ describes gadolinium getting into the water supply - ✔✔Anthropogenic
|| || || || || || || || ||
, Is known that there is flammable risk associated with a quench that released cryogen into
|| || || || || || || || || || || || || || ||
the room. This occurs because helium is flammable true or false. - ✔✔False
|| || || || || || || || || || || ||
Which of the following is the best solution at reducing hearing damage the patients during
|| || || || || || || || || || || || || || ||
acquisition
1. Make sure earplugs are placed properly.
|| || || || || ||
2. Using both earplugs and a headset.
|| || || || || ||
3. Properly placing earplugs in patient's ears and putting additional pad around their head.
|| || || || || || || || || || || || ||
4. All of the choices. - ✔✔All of the choices
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Who is responsible for maintaining the quench vent outside the site - ✔✔Site engineer
|| || || || || || || || || || || || ||
What is used to reduce the fringe field? - ✔✔shielding
|| || || || || || || || ||
Induce current in a patient can be described by what? - ✔✔Faraday's law of induction
|| || || || || || || || || || || || || ||
Which of the following would be considered an allergic reaction to gadolinium contrast?
|| || || || || || || || || || || ||
1. All of choices
|| || ||
2. Swelling
|| ||
3. Hives
||
4. Sneezing - ✔✔All
|| || ||
A patient is only given a headset to reduce the noise in MRI. This is sufficient to protect
|| || || || || || || || || || || || || || || || || ||
from any hearing damage true or false. - ✔✔False
|| || || || || || || ||
SOLUTIONS
Which of the following situations would promote the highest risk of an object reacting to
|| || || || || || || || || || || || || || ||
the static magnetic field?
|| || ||
1. A 5 foot seven inpatient for brain MRI with a lumbar fusion.
|| || || || || || || || || || || ||
2. All of the choices are a risk.
|| || || || || || ||
3. A 5 foot seven impatient for lumbar spine with an unknown G.I. clip.
|| || || || || || || || || || || || ||
4. A 5 foot nine inpatient for a cervical spine MRI with an unknown cardiac stent. - ✔✔3.
|| || || || || || || || || || || || || || || || ||
Arrythmogenesis potential can be produced at which of the following || || || || || || || || ||
1. Scanning a cardiac MRI with a heart valve.
|| || || || || || || ||
2. Scanning in the abdomen with a cardiac stent
|| || || || || || || ||
3. Scanning a brain with retain cardiac leads.
|| || || || || || ||
4. Scanning a foot with a transmit receive coil. - ✔✔Scanning a brain with a retained
|| || || || || || || || || || || || || || || ||
cardiac leads ||
An object that is electrically conductive, but not Ferris is moving through the magnetic
|| || || || || || || || || || || || || ||
spatial gradient. Opposing magnetic forces are produced in that object. This can be
|| || || || || || || || || || || || ||
explained by what - ✔✔Lenz force || || || || ||
Which of the following slew rates will describe a faster changing time varying gradient?
|| || || || || || || || || || || || ||
1. 100 T/m/s
|| ||
2.125
3.150
4.200 - ✔✔200 || ||
,Heating in our patient is dependent on which of the following? Select all that apply.
|| || || || || || || || || || || || || ||
1. Management of heating to expose tissue.
|| || || || || ||
2. Tissue conductivity.
|| ||
3. Tissue permittivity.
|| ||
4. Slice thickness. - ✔✔1,2,3
|| || || ||
Which of the following can be used as a heat sink?
|| || || || || || || || || ||
1. A piece of 100% cloth.
|| || || || ||
2. A piece of aluminum foil.
|| || || || ||
3. A 1 cm pad.
|| || || ||
4. An ice pack. - ✔✔Ice pack
|| || || || || ||
An obese patient has tissue pressed against the side of the bore. What burn is the patient at
|| || || || || || || || || || || || || || || || || ||
risk of? - ✔✔Proximity burn
|| || || ||
You have reached your limit and cannot continue scanning what can be done to reduce
|| || || || || || || || || || || || || || ||
your SAR ||
1. Add more slices.
|| || ||
2. Decrease receiving bandwidth.
|| || ||
3. Increase flip angle.
|| || ||
4. Decrease TE. - ✔✔Decrease receiving bandwidth
|| || || || || ||
A patient has a hip replacement and is undergoing an MRI exam of the hip. What could
|| || || || || || || || || || || || || || || || ||
happen - ✔✔Production of hotspots around the implant
|| || || || || || ||
____ describes gadolinium getting into the water supply - ✔✔Anthropogenic
|| || || || || || || || ||
, Is known that there is flammable risk associated with a quench that released cryogen into
|| || || || || || || || || || || || || || ||
the room. This occurs because helium is flammable true or false. - ✔✔False
|| || || || || || || || || || || ||
Which of the following is the best solution at reducing hearing damage the patients during
|| || || || || || || || || || || || || || ||
acquisition
1. Make sure earplugs are placed properly.
|| || || || || ||
2. Using both earplugs and a headset.
|| || || || || ||
3. Properly placing earplugs in patient's ears and putting additional pad around their head.
|| || || || || || || || || || || || ||
4. All of the choices. - ✔✔All of the choices
|| || || || || || || || ||
Who is responsible for maintaining the quench vent outside the site - ✔✔Site engineer
|| || || || || || || || || || || || ||
What is used to reduce the fringe field? - ✔✔shielding
|| || || || || || || || ||
Induce current in a patient can be described by what? - ✔✔Faraday's law of induction
|| || || || || || || || || || || || || ||
Which of the following would be considered an allergic reaction to gadolinium contrast?
|| || || || || || || || || || || ||
1. All of choices
|| || ||
2. Swelling
|| ||
3. Hives
||
4. Sneezing - ✔✔All
|| || ||
A patient is only given a headset to reduce the noise in MRI. This is sufficient to protect
|| || || || || || || || || || || || || || || || || ||
from any hearing damage true or false. - ✔✔False
|| || || || || || || ||
