The rapid turning on and off of the gradient coil can produce which of the follow events
in our patient? - Answer Peripheral nerve stimulation, Magnetophosphenes
What is the type of gradient coil used to produce axial images - Answer Maxwell coil
A gadolinium ion is attached to a molecule called...
MRSO Questions & Correct Revised Verified
Answers
The rapid turning on and off of the gradient coil can produce which of the follow events
in our patient? - Answer Peripheral nerve stimulation, Magnetophosphenes
What is the type of gradient coil used to produce axial images - Answer Maxwell coil
A gadolinium ion is attached to a molecule called a/an ____ Sonia can be excreted from
a patient - Answer Ligand
The B1 field is found where? - Answer 90* to the B0
This person is responsible for offering suggestions onMR protocol modifications,
offering advice on MR safety programs and MR quality assurance programs, providing a
high level of advice on safety aspects of MR equipment, and reporting this info to the
MRMD. This person is usually a physicist - Answer MRSE
The quench is not experienced right away, after about____ the cryogen is released from
the MRI unit through the quench vent - Answer 15-20 seconds
The 45* deflection of an implant is equal to what force? - Answer 1 gravity force
What unit of measurement is used for the SAR in MRI? - Answer W/kg
Common complaints in the MEI environment due to the fast changing gradient
activations are... - Answer Nystagmus, Nausea, Dizziness
,A tech walks into the MR room to check on a patient. As they do this, they stick their
head into the scammer quickly. What can occur from this movement through the static
magnetic field? - Answer Magnetophosphenes, Nausea, vertigo
Which of the following are true of a metal detector? - Answer They are able to detect
only metal substances
What does a cryogen do to the static magnetic field solenoid? - Answer It reduces/
eliminates resistance in wires
Which of the following are the units of measure for the static magnetic field? - Answer
Tesla
The B1 refers to what? - Answer The direction of the RF field
The electrical fields associated with RF can cause what when exposing our patient -
Answer Burning
What type of MR units uses many bricks of magnets to produce a strong magnetic field?
- Answer Permanent magnet
A patient develops two hives on their chest after a gadolinium contrast injection. What
type of adverse event is this considered? - Answer Allergic reaction
The process of releasing a cryogen form the MR unit is called? - Answer Quench
In order for cryogen to not harm a patient, what needs to happen? - Answer The
cryogen needs to be vented outside
, A ____ field of view will utilize a steeper frequency encoding gradient. This will promote
peripheral nerve stimulation. - Answer Smaller
A patient receives an injection of gadolinium and has pain at the injection site. What
would this be considered? - Answer A non-allergic reaction
What is the difference between an allergic reaction to contrast media and an
anaphylactic reaction? - Answer Anaphylactic reactions are more serious
The slope of the phase encoding gradient amplitude will determine how much
resolution we will have in our image. Therefore a ___ gradient slope will produce high-
resolution images - Answer Steeper
Induction of electrical current in our patient from changing magnetic fields can be
described by which of the following? - Answer Faraday's Law of induction
Which formula is used to define the time varying gradient fields? - Answer Db/dt
A headache after a contrata media injection is considered what possible adverse event?
- Answer Non-allergic reaction
What is the name for the direction of magnetic flux densities produced by the static
magnetic field? - Answer B0
What is the maximum allowable strength of the gradient coils for a given sequence
called? - Answer Maximum gradient peak
Inside the bore of the MRI, where would we expect the gradient coils to be found? -
Answer Surrounding the patient peripheral to isocenter
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