MRSO-2 EXAM (2024-2025)
Magnetophosphenes can be described as what?
a. Visually seeing flashing light while moving around the MRI
unit.
b. Iron in a patient's blood that becomes magnetized.
c. When the room lights dim due to the changing magnetic
fields.
d. Visualizing an elevated T wave on the cardiac cycle -
<<<Answers>>>a. Visually seeing flashing light while moving
around the MRI unit.
The magnetohydrodynamic effect describes artifacts seen where
in the cardiac cycle?
a. T wave
b. R wave
c. QRS complex
d. P wave - <<<Answers>>>a. T wave
How much more heating does a 360 degree RF pulse have than a
180 degree pulse?
a. 4 times more
b. 3 times more
c. 2 times more
d. Equal heating - <<<Answers>>>a. 4 times more
, MRSO-2 EXAM (2024-2025)
The electric fields associated with RF causes what?
a. Burning
b. Peripheral nerve stimulation
c. Translational force
d. Rotational force - <<<Answers>>>a. Burning
When discussing the distance from an RF transmitter and the
biological effects witnessed,which of the following describe the
area where burns can occur in proximity closest to the
transmitter?
a. Near field
b. Far field
c. Circular polarization
d. Danger zone - <<<Answers>>>a. Near field
Energy deposition is limited to what in first level controlled
operating mode?
a. 0.5 deg Celsius
b. 1 deg Celsius
c. 2 deg Celsius
d. 3 deg Celsius - <<<Answers>>>b. 1 deg Celsius
, MRSO-2 EXAM (2024-2025)
Which of the following mechanisms of patient burning is
associated with the antenna effect?
a. Proximity burning
b. Far field
c. Ferrous induction
d. Resonant circuitry - <<<Answers>>>d. Resonant circuitry
_____diameter loop formed by tissue or devices with a
____diameter contact point will increase the chance for patient
burns.
a. Large; narrow
b. Narrow; large
c. Large; large
d. Narrow; narrow - <<<Answers>>>a. Large; narrow
Which of the following is a heat sink in MRI?
a. Ice pack
b. Insulated wire
c. Ferrous object
d. All of the choices - <<<Answers>>>a. Ice pack
, MRSO-2 EXAM (2024-2025)
Which of the following will increase patient heating?
a. Increasing the echo train length.
b. Decreasing the TE
c. Increasing the TR
d. Decreasing the flip angle - <<<Answers>>>a. Increasing the
echo train length.
Which of the following techniques can be used t reduce the
heating in a fast spin echo?
a. Increase the TE spacing
b. Reduce the TR
c. Increase the flip angle
d. Tell them to hold their breath. - <<<Answers>>>a. Increase
the TE spacing
Why does a fast spin echo produce more heat than a
conventional spin echo sequence?
a. It does not.
b. It contains more 180 degree refocusing pulses.
c. It has more gradient activations.
d. It doesn't uses a 180 degree RF pulse. - <<<Answers>>>b. It
contains more 180 degree refocusing pulses.
Magnetophosphenes can be described as what?
a. Visually seeing flashing light while moving around the MRI
unit.
b. Iron in a patient's blood that becomes magnetized.
c. When the room lights dim due to the changing magnetic
fields.
d. Visualizing an elevated T wave on the cardiac cycle -
<<<Answers>>>a. Visually seeing flashing light while moving
around the MRI unit.
The magnetohydrodynamic effect describes artifacts seen where
in the cardiac cycle?
a. T wave
b. R wave
c. QRS complex
d. P wave - <<<Answers>>>a. T wave
How much more heating does a 360 degree RF pulse have than a
180 degree pulse?
a. 4 times more
b. 3 times more
c. 2 times more
d. Equal heating - <<<Answers>>>a. 4 times more
, MRSO-2 EXAM (2024-2025)
The electric fields associated with RF causes what?
a. Burning
b. Peripheral nerve stimulation
c. Translational force
d. Rotational force - <<<Answers>>>a. Burning
When discussing the distance from an RF transmitter and the
biological effects witnessed,which of the following describe the
area where burns can occur in proximity closest to the
transmitter?
a. Near field
b. Far field
c. Circular polarization
d. Danger zone - <<<Answers>>>a. Near field
Energy deposition is limited to what in first level controlled
operating mode?
a. 0.5 deg Celsius
b. 1 deg Celsius
c. 2 deg Celsius
d. 3 deg Celsius - <<<Answers>>>b. 1 deg Celsius
, MRSO-2 EXAM (2024-2025)
Which of the following mechanisms of patient burning is
associated with the antenna effect?
a. Proximity burning
b. Far field
c. Ferrous induction
d. Resonant circuitry - <<<Answers>>>d. Resonant circuitry
_____diameter loop formed by tissue or devices with a
____diameter contact point will increase the chance for patient
burns.
a. Large; narrow
b. Narrow; large
c. Large; large
d. Narrow; narrow - <<<Answers>>>a. Large; narrow
Which of the following is a heat sink in MRI?
a. Ice pack
b. Insulated wire
c. Ferrous object
d. All of the choices - <<<Answers>>>a. Ice pack
, MRSO-2 EXAM (2024-2025)
Which of the following will increase patient heating?
a. Increasing the echo train length.
b. Decreasing the TE
c. Increasing the TR
d. Decreasing the flip angle - <<<Answers>>>a. Increasing the
echo train length.
Which of the following techniques can be used t reduce the
heating in a fast spin echo?
a. Increase the TE spacing
b. Reduce the TR
c. Increase the flip angle
d. Tell them to hold their breath. - <<<Answers>>>a. Increase
the TE spacing
Why does a fast spin echo produce more heat than a
conventional spin echo sequence?
a. It does not.
b. It contains more 180 degree refocusing pulses.
c. It has more gradient activations.
d. It doesn't uses a 180 degree RF pulse. - <<<Answers>>>b. It
contains more 180 degree refocusing pulses.
