MRSO Magnetic Resonance Safety Officer TEST
STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND
VERIFIED CORRECT SOLUTIONS WITH RATIONALES ||
100% GUARANTEED PASS
<RECENT VERSION>
1. How do magnetic flux lines travel?
A. North to South
B. South to North
C. East to West
D. West to East - ANSWER ✓ A North to South
2. 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
3. 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
4. What direction is the vector of a permanent MR unit?
A. Horizontal
B. Vertical
C. Diagonal
D. Variable - ANSWER ✓ B. Vertical
5. 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
6. 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
7. 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
8. 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.
9. Gadolinium is a commonly occurring substance in nature?
A. True
B. False - ANSWER ✓ B. False
10.The use of a coil of wire, with an electrical current running through it , to
produce an electromagnetic field opposing the static magnetic field, to
reduce the fringe field. - ANSWER ✓ Active Shielding
11.The unit used to describe the static magnetic field. - ANSWER ✓ B sub 0
12.The amount of attraction an object has to the static magnetic field. -
ANSWER ✓ Deflection
,13.A weakly repulsive force when placed in a strong static magnetic field. -
ANSWER ✓ Diamagnetism
14.This describes how electrical currents are produced in the presence of
alternating magnetic fields. - ANSWER ✓ Faradays Law of Induction
15.An object with strong attractive force, in a strong static magnetic field, that
retains a magnetic field even when leaving the strong static magnetic field. -
ANSWER ✓ ferromagnetism
16.The gradient of magnetic densities that move from the north pole of the
static magnetic field to the south pole. - ANSWER ✓ Flux lines
17.The magnetic field that extends outside the MR unit. - ANSWER ✓ Fringe
Field
18.A magnetic field unit of measurement. - ANSWER ✓ Gauss
19.A magnetic field vector that is horizontal. - ANSWER ✓ Horizontal Static
Magnetic Field
20.The process of non-ferrous objects producing a magnetic field when moved
through a strong static magnetic field. - ANSWER ✓ Lenz's Force
21.The overall magnetic field strength of the MR unit. - ANSWER ✓ Magnetic
Field Strength
22.MR Safety Officer responsibilities - ANSWER ✓ The role of MRSO is often
carried out by the senior
Radiographer (in the USA this will generally be an MR technologist), but
other suitably trained individuals could also fill this role. Multiple MRSOs
could be appointed, provided only one is in charge at a given time. His/her
responsibilities
include the following:
23.To be readily accessible and available (eg, to the operators of the MR
system) at all times that the MR facility is accessible.
, 24.Ensuring that proper policies and procedures for day-today MR safety are
enforced.
25.Developing, documenting, and introducing, in conjunction with and under
the authority of the MRMD/MRRD, safe working procedures for the MR
environment.
26.Ensuring that adequate written safety procedures, work instructions,
emergency procedures, and operating instructions are issued to all concerned
after full consultation with the MRMD/MRRD (and, if/as needed, the
MRSE).
27.Ensuring that appropriate measures for minimizing risks to health that arise
from the use of or exposure to the MR equipment, as per the direction of the
MRMD/MRRD, are implemented and monitored.
28.Managing hazards posed by the MR equipment, and monitoring the
measures taken to protect against such hazards.
29.Ensuring that all Heads of Departments and senior medical staff members
who are responsible for personnel who will be involved with the MR system
are informed of the formal procedures for training and authorization.
30.Ensuring that medical, technical, nursing, and all other relevant staff groups
(including ancillary workers) who may be exposed to the MR environment
are educated appropriately on a regular basis as to the safety requirements
and updated as necessary.
31.Maintaining records of the personnel who have been educated appropriately
as to the safety requirements.
32.Consulting the MRMD/MRRD (and/or the MRSE)
when further adv
33.Magnetophosphenes - ANSWER ✓ A Sensory Symptom where the subject
sees flashing lights caused by an induced electrical current in the retina
when exposed to a strong magnetic field.
STUDY GUIDE 2025/2026 ACCURATE QUESTIONS AND
VERIFIED CORRECT SOLUTIONS WITH RATIONALES ||
100% GUARANTEED PASS
<RECENT VERSION>
1. How do magnetic flux lines travel?
A. North to South
B. South to North
C. East to West
D. West to East - ANSWER ✓ A North to South
2. 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
3. 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
4. What direction is the vector of a permanent MR unit?
A. Horizontal
B. Vertical
C. Diagonal
D. Variable - ANSWER ✓ B. Vertical
5. 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
6. 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
7. 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
8. 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.
9. Gadolinium is a commonly occurring substance in nature?
A. True
B. False - ANSWER ✓ B. False
10.The use of a coil of wire, with an electrical current running through it , to
produce an electromagnetic field opposing the static magnetic field, to
reduce the fringe field. - ANSWER ✓ Active Shielding
11.The unit used to describe the static magnetic field. - ANSWER ✓ B sub 0
12.The amount of attraction an object has to the static magnetic field. -
ANSWER ✓ Deflection
,13.A weakly repulsive force when placed in a strong static magnetic field. -
ANSWER ✓ Diamagnetism
14.This describes how electrical currents are produced in the presence of
alternating magnetic fields. - ANSWER ✓ Faradays Law of Induction
15.An object with strong attractive force, in a strong static magnetic field, that
retains a magnetic field even when leaving the strong static magnetic field. -
ANSWER ✓ ferromagnetism
16.The gradient of magnetic densities that move from the north pole of the
static magnetic field to the south pole. - ANSWER ✓ Flux lines
17.The magnetic field that extends outside the MR unit. - ANSWER ✓ Fringe
Field
18.A magnetic field unit of measurement. - ANSWER ✓ Gauss
19.A magnetic field vector that is horizontal. - ANSWER ✓ Horizontal Static
Magnetic Field
20.The process of non-ferrous objects producing a magnetic field when moved
through a strong static magnetic field. - ANSWER ✓ Lenz's Force
21.The overall magnetic field strength of the MR unit. - ANSWER ✓ Magnetic
Field Strength
22.MR Safety Officer responsibilities - ANSWER ✓ The role of MRSO is often
carried out by the senior
Radiographer (in the USA this will generally be an MR technologist), but
other suitably trained individuals could also fill this role. Multiple MRSOs
could be appointed, provided only one is in charge at a given time. His/her
responsibilities
include the following:
23.To be readily accessible and available (eg, to the operators of the MR
system) at all times that the MR facility is accessible.
, 24.Ensuring that proper policies and procedures for day-today MR safety are
enforced.
25.Developing, documenting, and introducing, in conjunction with and under
the authority of the MRMD/MRRD, safe working procedures for the MR
environment.
26.Ensuring that adequate written safety procedures, work instructions,
emergency procedures, and operating instructions are issued to all concerned
after full consultation with the MRMD/MRRD (and, if/as needed, the
MRSE).
27.Ensuring that appropriate measures for minimizing risks to health that arise
from the use of or exposure to the MR equipment, as per the direction of the
MRMD/MRRD, are implemented and monitored.
28.Managing hazards posed by the MR equipment, and monitoring the
measures taken to protect against such hazards.
29.Ensuring that all Heads of Departments and senior medical staff members
who are responsible for personnel who will be involved with the MR system
are informed of the formal procedures for training and authorization.
30.Ensuring that medical, technical, nursing, and all other relevant staff groups
(including ancillary workers) who may be exposed to the MR environment
are educated appropriately on a regular basis as to the safety requirements
and updated as necessary.
31.Maintaining records of the personnel who have been educated appropriately
as to the safety requirements.
32.Consulting the MRMD/MRRD (and/or the MRSE)
when further adv
33.Magnetophosphenes - ANSWER ✓ A Sensory Symptom where the subject
sees flashing lights caused by an induced electrical current in the retina
when exposed to a strong magnetic field.
