MRSO EXAMS SET FEATURING SOLVED
QUESTIONS AND ACCURACY CHECKED
ANSWERS
●● Gad contrast has been found in the body in what form? Select all that
apply.
a. Water-soluble
b. Non-water soluble
Answer: a, b
●● Which of the following would we expect to be the loudest sequence?
a. GRASS
b. Fast spin echo
c. Conventional gradient sequence
d. FLAIR
Answer: a. GRASS
The FLAIR and fast spin echo are considered spin echo sequences; they
do not have extremely fast changing gradient, so will not produce as
much noise.
●● Which of the following has a steeper spatial magnetic gradient?
,a. Vertical B0
b. Horizontal B0
Answer: a. Vertical B0
●● The strongest gradient strength will reach maximum strength how far
from isocenter?
a. 5-20 cm
b. 20-40 cm
c. 30-60 cm
d. 5-15 cm
Answer: c. 30-60 cm
●● Which of the following is true of gad and breastfeeding mothers?
Select all that apply.
a. Gad is found in breast milk in a stable and chelated form
b. It is thought that gad contrast may alter the taste of breastmilk.
c. Available data suggests that breastmilk should be pumped and
discarded for 24 hours after the IV dose
d. 20% of the intravascular dose would be excreted into the breastmilk
within the first 24 hours.
Answer: a, b
, ●● Which of the following will influence peripheral nerve stimulation?
a. Static magnetic field
b. Magnetic field at isocenter
c. Patient weight
d. Slew rate
Answer: d. Slew rate
●● Which of the following pulse sequences would we expect to see the
least patient heating?
a. Incoherent gradient
b. STIR
c. Fast spin echo
d. EPI
Answer: d. EPI
●● A patient comes in with a 1 cm brain aneurysm clip and you find the
package which lists what metal it is made from. Which of the following
metals would make it unsafe to scan this patient?
a. Elgiloy
b. Phynox
c. MP35N
QUESTIONS AND ACCURACY CHECKED
ANSWERS
●● Gad contrast has been found in the body in what form? Select all that
apply.
a. Water-soluble
b. Non-water soluble
Answer: a, b
●● Which of the following would we expect to be the loudest sequence?
a. GRASS
b. Fast spin echo
c. Conventional gradient sequence
d. FLAIR
Answer: a. GRASS
The FLAIR and fast spin echo are considered spin echo sequences; they
do not have extremely fast changing gradient, so will not produce as
much noise.
●● Which of the following has a steeper spatial magnetic gradient?
,a. Vertical B0
b. Horizontal B0
Answer: a. Vertical B0
●● The strongest gradient strength will reach maximum strength how far
from isocenter?
a. 5-20 cm
b. 20-40 cm
c. 30-60 cm
d. 5-15 cm
Answer: c. 30-60 cm
●● Which of the following is true of gad and breastfeeding mothers?
Select all that apply.
a. Gad is found in breast milk in a stable and chelated form
b. It is thought that gad contrast may alter the taste of breastmilk.
c. Available data suggests that breastmilk should be pumped and
discarded for 24 hours after the IV dose
d. 20% of the intravascular dose would be excreted into the breastmilk
within the first 24 hours.
Answer: a, b
, ●● Which of the following will influence peripheral nerve stimulation?
a. Static magnetic field
b. Magnetic field at isocenter
c. Patient weight
d. Slew rate
Answer: d. Slew rate
●● Which of the following pulse sequences would we expect to see the
least patient heating?
a. Incoherent gradient
b. STIR
c. Fast spin echo
d. EPI
Answer: d. EPI
●● A patient comes in with a 1 cm brain aneurysm clip and you find the
package which lists what metal it is made from. Which of the following
metals would make it unsafe to scan this patient?
a. Elgiloy
b. Phynox
c. MP35N
