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MRSO EXAM 2 MAGNETIC RESONANCE SAFETY
OFFICER EXAM QUESTIONS AND CORRECT ANSWERS
| ALREADY GRADED A+ | LATEST VERSIONS 2025
What is the name of the gradient coil used to produce sagittal and coronal
images?
a. Transverse coil
b. Golay coil
c. Maxwell coil
d. Receiver coil - (ANSWER)b. Golay coil ("saddle coil")
Which of the following is able to handle the most RF heating?
a. elderly
b. adult
c. obese adult
d. neonate - (ANSWER)d. neonate
Which of the following techniques can be used to increase the echo spacing?
Select all that apply.
a. Increase the TR
b. Decrease receiving bandwidth
c. Increase receiving bandwidth
d. Use a receive only coil
e. Increase field of view
f. Increase flip angle - (ANSWER)b, e
Decreasing the receiving bandwidth will be lengthening the sample time. This may
force us to increase our TE as well as the TR. Increasing the field of view will also
allow for longer echo spacing.
The differences in magnetic field strength as you approach the MRI unit is termed
what?
a. Spatial magnetic gradient
b. Gauss line
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c. RF energy
d. Gradient coils - (ANSWER)a. Spatial magnetic gradient
Measured in dB/dx
Which of the following produce the greatest chance for peripheral nerve
stimulation?
a. Conventional spin echo
b. Fast spin echo
c. Gradient echo
d. EPI - (ANSWER)d. EPI
A deflection of 45 degrees in a tested implant indicates that it deflects at a force
equal to what?
a. 0.5 gravity force
b. 2 gravity force
c. 0.25 gravity force
d. 1 gravity force - (ANSWER)d. 1 gravity force
4T/m is equal to what?
a. 4000 G/cm
b. 4G/cm
c. 40 G/cm
d. 400 G/cm - (ANSWER)d. 400 G/cm
1T = 10,000 G
1m = 100 cm
Therefore, 1 T/m=10,000G/100cm
This means that 1 T/m=100 G/cm
How do we calculate the maximal spatial gradient?
a. dB/dx * B
b. dB/dt * W/kg
c. W/kg
d. B - (ANSWER)a. dB/dx * B
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What group issued the ACR white paper MRI safety?
a. ACR Blue Ribbon Panel on MR safety
b. FDA
c. OSHA
d. EPA - (ANSWER)a. ACR Blue Ribbon Panel on MR safety
Which of the following is true of a gad contrast osmolarity?
a. Less than blood
b. Greater than blood
c. Less than water
d. Equal to blood - (ANSWER)b. Greater than blood (and greater than water)
Which of the following is true if we increase the field of view from 200mm to
400mm?
a. We reduce patient heating
b. We use a stronger time-varying gradient magnetic field
c. We use a weak time-varying gradient magnetic field
d. We increase the patient heating - (ANSWER)c. We use a weak time-varying
magnetic field.
Larger field of views will produce lower resolution exams. The size of the field of
view is dependent on the frequency encoding gradient coil. When we increase the
field of view, we decrease the amplitude of our gradient coil.
When a T1 weighted image is taken of a vial of gad contrast, it will appear how?
a. Bright
b. Dark
c. Gray
d. Blue - (ANSWER)b. Dark
Active shield is performed how?
MRSO EXAM 2 MAGNETIC RESONANCE SAFETY
OFFICER EXAM QUESTIONS AND CORRECT ANSWERS
| ALREADY GRADED A+ | LATEST VERSIONS 2025
What is the name of the gradient coil used to produce sagittal and coronal
images?
a. Transverse coil
b. Golay coil
c. Maxwell coil
d. Receiver coil - (ANSWER)b. Golay coil ("saddle coil")
Which of the following is able to handle the most RF heating?
a. elderly
b. adult
c. obese adult
d. neonate - (ANSWER)d. neonate
Which of the following techniques can be used to increase the echo spacing?
Select all that apply.
a. Increase the TR
b. Decrease receiving bandwidth
c. Increase receiving bandwidth
d. Use a receive only coil
e. Increase field of view
f. Increase flip angle - (ANSWER)b, e
Decreasing the receiving bandwidth will be lengthening the sample time. This may
force us to increase our TE as well as the TR. Increasing the field of view will also
allow for longer echo spacing.
The differences in magnetic field strength as you approach the MRI unit is termed
what?
a. Spatial magnetic gradient
b. Gauss line
,2|Page
c. RF energy
d. Gradient coils - (ANSWER)a. Spatial magnetic gradient
Measured in dB/dx
Which of the following produce the greatest chance for peripheral nerve
stimulation?
a. Conventional spin echo
b. Fast spin echo
c. Gradient echo
d. EPI - (ANSWER)d. EPI
A deflection of 45 degrees in a tested implant indicates that it deflects at a force
equal to what?
a. 0.5 gravity force
b. 2 gravity force
c. 0.25 gravity force
d. 1 gravity force - (ANSWER)d. 1 gravity force
4T/m is equal to what?
a. 4000 G/cm
b. 4G/cm
c. 40 G/cm
d. 400 G/cm - (ANSWER)d. 400 G/cm
1T = 10,000 G
1m = 100 cm
Therefore, 1 T/m=10,000G/100cm
This means that 1 T/m=100 G/cm
How do we calculate the maximal spatial gradient?
a. dB/dx * B
b. dB/dt * W/kg
c. W/kg
d. B - (ANSWER)a. dB/dx * B
, 3|Page
What group issued the ACR white paper MRI safety?
a. ACR Blue Ribbon Panel on MR safety
b. FDA
c. OSHA
d. EPA - (ANSWER)a. ACR Blue Ribbon Panel on MR safety
Which of the following is true of a gad contrast osmolarity?
a. Less than blood
b. Greater than blood
c. Less than water
d. Equal to blood - (ANSWER)b. Greater than blood (and greater than water)
Which of the following is true if we increase the field of view from 200mm to
400mm?
a. We reduce patient heating
b. We use a stronger time-varying gradient magnetic field
c. We use a weak time-varying gradient magnetic field
d. We increase the patient heating - (ANSWER)c. We use a weak time-varying
magnetic field.
Larger field of views will produce lower resolution exams. The size of the field of
view is dependent on the frequency encoding gradient coil. When we increase the
field of view, we decrease the amplitude of our gradient coil.
When a T1 weighted image is taken of a vial of gad contrast, it will appear how?
a. Bright
b. Dark
c. Gray
d. Blue - (ANSWER)b. Dark
Active shield is performed how?
