Exam (elaborations)
MRSO MOCK EXAM 1 QUESTIONS AND ANSWERS
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MRSO MOCK EXAM 1 QUESTIONS AND ANSWERS
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Name: Score:95 Multiple choice questions
Term 1 of 95
5,000G is equal to _____ T.
2T
0.25T
1T
0.5T
Term 2 of 95
Which of the following are true of 1.5 T MR units vs. 3.0 T? Select all that apply.
Ferrous objects show more attraction at 3.0 T vs 1.5 T
Implants that are safe at 3.0 T do not mean that they are safe at 1.5 T
Heating in the pacemaker leads not connected to a generator is higher at 3.0 T than 1.5 T
Small metallic passive objects are safe at 3.0 T and not at 1.5 T
It is hypothesized that gadolinium retention occurs due to it following pathways that
other metals do, such as iron and calcium.
Lenz's effect
Ferrous objects show more attraction at 3.0 T vs 1.5 T
Implants that are safe at 3.0 T do not mean that they are safe at 1.5 T
These implants may contain magnetic components that can be attracted to the MR unit.
,Term 3 of 95
What type of contrast is Dotarem?
Ionic, macrocylic
Non ionic, macrocylic
Ionic, non ionic
Linear, macrocylic
Term 4 of 95
A patient is complaining of discomfort from high SAR during a fast spin echo. What can be
done to make them more comfortable?
Decrease the TR
Decrease the echo train length
Increase the receiving bandwidth
Increase the flip angle
Term 5 of 95
Which of the following will influence translational force? Select all that apply.
Spatial gradient magnetic field
Strength of the magnetic field strength
Magnetic susceptibility
Mass of the object
Ferrous objects show more attraction at 3.0 T vs 1.5 T
Implants that are safe at 3.0 T do not mean that they are safe at 1.5 T
Physiologic reactions
Contains thin coiled copper wires
Spatial gradient magnetic field
Strength of the magnetic field strength
Magnetic susceptibility
Mass of the object
,Term 6 of 95
Which of the following are sensations that occur from the time-varying gradient field?
Twitching
Tingling
Pain
All of the choices
Term 7 of 95
Which of the following is true when scanning pregnant patients?
Stay in normal mode
All of the choices
Scanning at 1.5 T suggested
Communicate with patient
Term 8 of 95
Gadolinium contrast has been found in the body in what form? Select all that apply.
Free gadolinium is not bound to anything
Water soluble
Non-water soluble
High blood pressure
Deep brain stimulator
Can cause A burn
Water soluble
Non-water soluble
, Term 9 of 95
What is the half wavelength for a 1.5 T unit?
60 cm
25 cm
5 cm
12 cm
Term 10 of 95
A proximity burn occurs when?
A patient's skin is in contact with the gantry.
When an ECG wire forms a loop.
When a patient's skin forms a conductive loop.
When a electrical conductive material is placed on our patient.
Term 11 of 95
What needs to be in site when complying with the line of sight rule defined in the ACR Manual
on MRI Safety? Select all that apply.
Door to Zone 3
Console
Patient
Door to Zone 4
Console
Patient
Door to Zone 4
Console Patient Door to Zone 3
Console Patient Door to Zone 96
Break The Window to Zone iv
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