1|Page
MRSO EXAM PREP; ACTUAL QUESTIONS WITH
100% VERIFIED ANSWERS
List 3 types of ferromagnetic detectors used in MRI - correct-
answer-Single pillar (screener), hand held (not for full body
screening), doorway (less sensitive - best for large metallic
objects)
Where should pillar ferromagnetic detectors be located? -
correct-answer-In zone 2 - before zone 3.
How should MR staff dress? - correct-answer-Ferromagnetic free
What are some ways to ease anxiety / claustrophobia in patients?
- correctanswer-Don't rush them, allow them to ask questions.
Offer them a cloth to cover their eyes
Aromatherapy
Stay in contact with the patient until they tell you they're
comfortable within the bore
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
,2|Page
What unit is used to measure static magnetic field strength
INSIDE the magnet?correct-answer-Tesla
What unit is used to measure static magnetic field strength
OUTSIDE the magnet?
- correct-answer-Gauss
1 Tesla = ______________ Gauss - correct-answer-1 Tesla = 1000
gauss
1 mT = _______________ Gauss - correct-answer-1/1,000 T (or 10
(-3) T) = 10 G
5 G = ___ mT - correct-answer-5 G = 0.5 mT
FDA Guidelines for exposure to magnetic field Adults and infants
> 1 mo of age:correct-answer-8 T
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
,3|Page
FDA Guidelines for exposure to magnetic field for infants < 1 mo
of age: - correctanswer-4 T
What are the 3 Static Magnetic Field Forces? - correct-answer-
Rotation
Translation
Lenz's forces
Rotational force is ________________ at isocenter - correct-
answer-greatest
Rotational / Torque force: - correct-answer-Force exerted
on an elongated ferromagnetic object so it aligns with the
direction of the magnetic field
Translational force: - correct-answer-Force exerted on a
ferromagnetic object causing it to move/accelerate toward a
higher magnetic field
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
, 4|Page
Translational force is ___________________ at isocenter - correct-
answer-zero Translational force is greatest: - correct-answer-
where the change in the magnetic field over distance is the
greatest - Bo(dB/dx)
Translational forces have a _______________ path (3) - correct-
answer-Random,
Oscillating and Unpredictable Path
Translational force is expressed with what formula? - correct-
answer-Translational
Force = B0(dB/dx)
Lenz's Law - correct-answer-An induced
electromotive force (emf) always gives rise to a
current whose magnetic field opposes the original
change in magnetic flux
Lenz's Forces are dependent upon - correct-answer-Size of the
item
Orientation of movement relative to B0
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
MRSO EXAM PREP; ACTUAL QUESTIONS WITH
100% VERIFIED ANSWERS
List 3 types of ferromagnetic detectors used in MRI - correct-
answer-Single pillar (screener), hand held (not for full body
screening), doorway (less sensitive - best for large metallic
objects)
Where should pillar ferromagnetic detectors be located? -
correct-answer-In zone 2 - before zone 3.
How should MR staff dress? - correct-answer-Ferromagnetic free
What are some ways to ease anxiety / claustrophobia in patients?
- correctanswer-Don't rush them, allow them to ask questions.
Offer them a cloth to cover their eyes
Aromatherapy
Stay in contact with the patient until they tell you they're
comfortable within the bore
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
,2|Page
What unit is used to measure static magnetic field strength
INSIDE the magnet?correct-answer-Tesla
What unit is used to measure static magnetic field strength
OUTSIDE the magnet?
- correct-answer-Gauss
1 Tesla = ______________ Gauss - correct-answer-1 Tesla = 1000
gauss
1 mT = _______________ Gauss - correct-answer-1/1,000 T (or 10
(-3) T) = 10 G
5 G = ___ mT - correct-answer-5 G = 0.5 mT
FDA Guidelines for exposure to magnetic field Adults and infants
> 1 mo of age:correct-answer-8 T
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
,3|Page
FDA Guidelines for exposure to magnetic field for infants < 1 mo
of age: - correctanswer-4 T
What are the 3 Static Magnetic Field Forces? - correct-answer-
Rotation
Translation
Lenz's forces
Rotational force is ________________ at isocenter - correct-
answer-greatest
Rotational / Torque force: - correct-answer-Force exerted
on an elongated ferromagnetic object so it aligns with the
direction of the magnetic field
Translational force: - correct-answer-Force exerted on a
ferromagnetic object causing it to move/accelerate toward a
higher magnetic field
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
, 4|Page
Translational force is ___________________ at isocenter - correct-
answer-zero Translational force is greatest: - correct-answer-
where the change in the magnetic field over distance is the
greatest - Bo(dB/dx)
Translational forces have a _______________ path (3) - correct-
answer-Random,
Oscillating and Unpredictable Path
Translational force is expressed with what formula? - correct-
answer-Translational
Force = B0(dB/dx)
Lenz's Law - correct-answer-An induced
electromotive force (emf) always gives rise to a
current whose magnetic field opposes the original
change in magnetic flux
Lenz's Forces are dependent upon - correct-answer-Size of the
item
Orientation of movement relative to B0
MRSO EXAM PREP ACTUAL QUESTIONS WITH 100% VERIFIED ANSWERS
