MRSO MOCK EXAM 2
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. - Answer-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. - Answer-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 - Answer-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 - Answer-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. - Answer-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. - Answer-Ice pack
An obese patient has tissue pressed against the side of the bore. What burn is the patient at risk of? -
Answer-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. - Answer-Decrease receiving bandwidth
A patient has a hip replacement and is undergoing an MRI exam of the hip. What could happen -
Answer-Production of hotspots around the implant
____ describes gadolinium getting into the water supply - Answer-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. - Answer-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. - Answer-All of the choices
Who is responsible for maintaining the quench vent outside the site - Answer-Site engineer
What is used to reduce the fringe field? - Answer-shielding
Induce current in a patient can be described by what? - Answer-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 - Answer-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. - Answer-False
If helium gas is released into the scan room, air can be displaced this can cause what - Answer-
Asphyxiation
What produces noise you hear during an MRI? - Answer-Time-varying gradient field
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. - Answer-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. - Answer-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 - Answer-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 - Answer-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. - Answer-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. - Answer-Ice pack
An obese patient has tissue pressed against the side of the bore. What burn is the patient at risk of? -
Answer-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. - Answer-Decrease receiving bandwidth
A patient has a hip replacement and is undergoing an MRI exam of the hip. What could happen -
Answer-Production of hotspots around the implant
____ describes gadolinium getting into the water supply - Answer-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. - Answer-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. - Answer-All of the choices
Who is responsible for maintaining the quench vent outside the site - Answer-Site engineer
What is used to reduce the fringe field? - Answer-shielding
Induce current in a patient can be described by what? - Answer-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 - Answer-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. - Answer-False
If helium gas is released into the scan room, air can be displaced this can cause what - Answer-
Asphyxiation
What produces noise you hear during an MRI? - Answer-Time-varying gradient field
