Magnetic Resonance Safety Expert (MRSE) Newest 2025
MAGNETIC RESONANCE SAFETY EXPERT (MRSE) NEWEST 2025
EXAM COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
Which of the following are true of a department according to the ACR Manual on MRI Safety
2020? Select all that apply.
Patients are screened for threats in Zone 3
Ferrodetectors should be at the entrance of Zone 3
The entrance to zone 3 should have a keypad/badge system to control access
MR screening forms should be filled out in zone 4
Ferrodetectors should be at the entrance of Zone 3
The entrance to zone 3 should have a keypad/badge system to control access
Due to induced electrical fields produced in our patients due to flowing blood and our static
magnetic field, what can be demonstrated?
Magnetophosphenes
All of the following
Nystagmus
Magnetohydrodynamic effect
Magnetohydrodynamic effect
Given the following parameters, which has the lowest heating potential when dealing with TR,
Pulse Duration, and flip angle?
TR= 2000 Pulse Duration=1ms Flip angle = 100
TR= 1500 Pulse Duration=2ms Flip angle = 160
TR= 2000 Pulse Duration=2ms Flip angle = 180
TR= 1500 Pulse Duration=1ms Flip angle = 180
1|Page
, Magnetic Resonance Safety Expert (MRSE) Newest 2025
TR= 2000 Pulse Duration=1ms Flip angle = 100
What bioeffect is associated with the time-varying gradient fields?
Auditory concerns
Nystagmus
Magnetophosphenes
PNS
All of the above
All of the above
Due to induced electrical fields produced in our patients due to flowing blood and our static
magnetic field, what can be demonstrated?
Nystagmus
Magnetophosphenes
Magnetohydrodynamic effect
All of the above
Magnetohydrodynamic effect
You are scanning a 3-day-old patient with a 340MHz resonant frequency. Can you meet the
FDA limits?
Yes
No
No
340MHz represents an 8T unit. The FDA states that patients < 1 month old are limited to 4T.
What can be done to prevent water from getting into a quench pipe in zone 3? Select all that
apply.
It can be angled 180 degrees downward
It can have a vented cap on the top
2|Page
, Magnetic Resonance Safety Expert (MRSE) Newest 2025
It can be angled down 45 degrees
All of the above
All of the above
Which of the following would compete for a GBCM ligand? Select all that apply.
Iron
Phosphates
Calcium
Zinc
Calcium, Zinc, Iron
Metals will compete for the ligand.
Lenz Force will produce _____ to the vector of a changing magnetic field.
Unpredictable forces
Attractive forces
No forces
Opposing forces
Opposing forces
Which of the following will produce the highest heating when dealing with TR, ETL, and Flip
angle?
TR= 1800 ETL = 10 Flip angle = 150
TR= 1000 ETL = 10 Flip angle = 180
TR= 2000 ETL = 10 Flip angle = 120
TR= 1500 ETL = 10 Flip angle = 140
TR= 1000 ETL = 10 Flip angle = 180
3|Page
, Magnetic Resonance Safety Expert (MRSE) Newest 2025
A patient experiences movement in a non-ferrous, conductive implant as they are advanced into
the gantry at 2 T/s. What can be done to reduce this?
Cancel patient
Do not exceed 4T/s
Nothing will help
Advance at 1T/s
Approximately how much helium gas will be produced in a 2000-liter cryostat that is 90% full?
1. 1,000,000 liters
2. 10,000,000 liters
3. 100,000 liters
4. 10,000 liters
1
Helium expands 700x in its gas form from its liquid form. 2000.9= 1800L. 1800L 700 =
>1,000,000
Due to induced electrical fields produced in our patients due to flowing blood and our static
magnetic field, what can be demonstrated?
1. Nystagmus
2. All of the following
3. Magnetophosphenes
4. Magnetohydrodynamic effect
Magnetohydrodynamic effect
We expect to see the highest heat deposition:
1. All the choices
2. Under RF rungs
3. Around electrical conductive material
4. In the near field
4|Page
MAGNETIC RESONANCE SAFETY EXPERT (MRSE) NEWEST 2025
EXAM COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
Which of the following are true of a department according to the ACR Manual on MRI Safety
2020? Select all that apply.
Patients are screened for threats in Zone 3
Ferrodetectors should be at the entrance of Zone 3
The entrance to zone 3 should have a keypad/badge system to control access
MR screening forms should be filled out in zone 4
Ferrodetectors should be at the entrance of Zone 3
The entrance to zone 3 should have a keypad/badge system to control access
Due to induced electrical fields produced in our patients due to flowing blood and our static
magnetic field, what can be demonstrated?
Magnetophosphenes
All of the following
Nystagmus
Magnetohydrodynamic effect
Magnetohydrodynamic effect
Given the following parameters, which has the lowest heating potential when dealing with TR,
Pulse Duration, and flip angle?
TR= 2000 Pulse Duration=1ms Flip angle = 100
TR= 1500 Pulse Duration=2ms Flip angle = 160
TR= 2000 Pulse Duration=2ms Flip angle = 180
TR= 1500 Pulse Duration=1ms Flip angle = 180
1|Page
, Magnetic Resonance Safety Expert (MRSE) Newest 2025
TR= 2000 Pulse Duration=1ms Flip angle = 100
What bioeffect is associated with the time-varying gradient fields?
Auditory concerns
Nystagmus
Magnetophosphenes
PNS
All of the above
All of the above
Due to induced electrical fields produced in our patients due to flowing blood and our static
magnetic field, what can be demonstrated?
Nystagmus
Magnetophosphenes
Magnetohydrodynamic effect
All of the above
Magnetohydrodynamic effect
You are scanning a 3-day-old patient with a 340MHz resonant frequency. Can you meet the
FDA limits?
Yes
No
No
340MHz represents an 8T unit. The FDA states that patients < 1 month old are limited to 4T.
What can be done to prevent water from getting into a quench pipe in zone 3? Select all that
apply.
It can be angled 180 degrees downward
It can have a vented cap on the top
2|Page
, Magnetic Resonance Safety Expert (MRSE) Newest 2025
It can be angled down 45 degrees
All of the above
All of the above
Which of the following would compete for a GBCM ligand? Select all that apply.
Iron
Phosphates
Calcium
Zinc
Calcium, Zinc, Iron
Metals will compete for the ligand.
Lenz Force will produce _____ to the vector of a changing magnetic field.
Unpredictable forces
Attractive forces
No forces
Opposing forces
Opposing forces
Which of the following will produce the highest heating when dealing with TR, ETL, and Flip
angle?
TR= 1800 ETL = 10 Flip angle = 150
TR= 1000 ETL = 10 Flip angle = 180
TR= 2000 ETL = 10 Flip angle = 120
TR= 1500 ETL = 10 Flip angle = 140
TR= 1000 ETL = 10 Flip angle = 180
3|Page
, Magnetic Resonance Safety Expert (MRSE) Newest 2025
A patient experiences movement in a non-ferrous, conductive implant as they are advanced into
the gantry at 2 T/s. What can be done to reduce this?
Cancel patient
Do not exceed 4T/s
Nothing will help
Advance at 1T/s
Approximately how much helium gas will be produced in a 2000-liter cryostat that is 90% full?
1. 1,000,000 liters
2. 10,000,000 liters
3. 100,000 liters
4. 10,000 liters
1
Helium expands 700x in its gas form from its liquid form. 2000.9= 1800L. 1800L 700 =
>1,000,000
Due to induced electrical fields produced in our patients due to flowing blood and our static
magnetic field, what can be demonstrated?
1. Nystagmus
2. All of the following
3. Magnetophosphenes
4. Magnetohydrodynamic effect
Magnetohydrodynamic effect
We expect to see the highest heat deposition:
1. All the choices
2. Under RF rungs
3. Around electrical conductive material
4. In the near field
4|Page
