MRSO CERTIFICATION EVALUATION TEST
PAPER QUESTIONS AND SOLUTIONS
VERIFIED RESOURCE
●● Which of the following can be potential safety concerns to a patient
in the static magnetic field?
A. Electrically conductive materials
B. Ferrous objects
C. Magnetic objects
D. All of the choices.
Answer: D. All of the choices
●● An object that retains its magnetic field when exiting the static
magnetic field is call what?
A. Paramagnetic
B. Diamagnetic
C. Ferromagnetic
D. Superparamagnetic
Answer: C. Ferromagnetic
●● What direction is the vector of a permanent MR unit?
A. Horizontal
,B. Vertical
C. Diagonal
D. Variable
Answer: B. Vertical
●● What separates a superconducting MR unit from a resistive MR unit?
A. Cryogen
B. Coils of wires
C. Permanent magnets
D. none of the choices
Answer: A. Cryogen
●● The increasing strength of magnetism as we move closer to the MR
unit is called what?
A. Ferromagnetism
B. Spatial magnetic gradient field
C. Vector
D. B0
Answer: B. Spatial magnetic gradient field
●● What is responsible for attracting ferrous objects into the MR unit?
A. Spatial magnetic gradient fields
,B. Strong uniform magnetic fields
C. Gradient coils
D. Radiofrequency system
Answer: A. Spatial magnetic gradient fields
●● If we placed a small ferrous object at isocenter, what would we
expect to happen?
A. The object would experience no attraction.
B. The object would immediately be attracted to the bore.
C. The object would levitate.
D. The object would be repulsed by the unit.
Answer: A. The object would experience no attraction.
●● Rotational force will be the strongest at what location?
A. Isocenter
B. Outside the MR room
C. At the gantry opening
D. At the 5 gauss line
Answer: A. Isocenter
●● Passive shielding uses which of the following?
A. Coils of wires with electrical current running through them.
, B. Magnetically conductive materials
C. Plastic
D. Wood
Answer: B. Magnetically conductive materials
●● How can we reduce risks associated with Lenz's force?
A. No risks are associated with Lenz's force.
B. Use a cold compress to reduce heating.
C. Move as quickly as possible to get the patient out of the scanner
quickly.
D. Advance patient into the scanner slowly.
Answer: D. Advance Patient into the scanner slowly.
●● An implant has a deflection of 23 degrees. In terms of static
magnetic fields, is it safe for this patient to have an MRI?
A. Yes
B. Must call the manufacture to determine conditions.
C. No
D. Not enough information.
Answer: A. Yes
●● Which of the following stainless steels are non-ferrous?
A. Ferritic
PAPER QUESTIONS AND SOLUTIONS
VERIFIED RESOURCE
●● Which of the following can be potential safety concerns to a patient
in the static magnetic field?
A. Electrically conductive materials
B. Ferrous objects
C. Magnetic objects
D. All of the choices.
Answer: D. All of the choices
●● An object that retains its magnetic field when exiting the static
magnetic field is call what?
A. Paramagnetic
B. Diamagnetic
C. Ferromagnetic
D. Superparamagnetic
Answer: C. Ferromagnetic
●● What direction is the vector of a permanent MR unit?
A. Horizontal
,B. Vertical
C. Diagonal
D. Variable
Answer: B. Vertical
●● What separates a superconducting MR unit from a resistive MR unit?
A. Cryogen
B. Coils of wires
C. Permanent magnets
D. none of the choices
Answer: A. Cryogen
●● The increasing strength of magnetism as we move closer to the MR
unit is called what?
A. Ferromagnetism
B. Spatial magnetic gradient field
C. Vector
D. B0
Answer: B. Spatial magnetic gradient field
●● What is responsible for attracting ferrous objects into the MR unit?
A. Spatial magnetic gradient fields
,B. Strong uniform magnetic fields
C. Gradient coils
D. Radiofrequency system
Answer: A. Spatial magnetic gradient fields
●● If we placed a small ferrous object at isocenter, what would we
expect to happen?
A. The object would experience no attraction.
B. The object would immediately be attracted to the bore.
C. The object would levitate.
D. The object would be repulsed by the unit.
Answer: A. The object would experience no attraction.
●● Rotational force will be the strongest at what location?
A. Isocenter
B. Outside the MR room
C. At the gantry opening
D. At the 5 gauss line
Answer: A. Isocenter
●● Passive shielding uses which of the following?
A. Coils of wires with electrical current running through them.
, B. Magnetically conductive materials
C. Plastic
D. Wood
Answer: B. Magnetically conductive materials
●● How can we reduce risks associated with Lenz's force?
A. No risks are associated with Lenz's force.
B. Use a cold compress to reduce heating.
C. Move as quickly as possible to get the patient out of the scanner
quickly.
D. Advance patient into the scanner slowly.
Answer: D. Advance Patient into the scanner slowly.
●● An implant has a deflection of 23 degrees. In terms of static
magnetic fields, is it safe for this patient to have an MRI?
A. Yes
B. Must call the manufacture to determine conditions.
C. No
D. Not enough information.
Answer: A. Yes
●● Which of the following stainless steels are non-ferrous?
A. Ferritic
