MRSO-4 Exam with verified detailed solutions || || || || ||
The quench vent in the MR room should be inspected by who?
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a. facility engineers
|| ||
b. manufacturer engineers
|| ||
c. MR tech
|| ||
d. MRMD ✔✔ b. manufacturer engineers
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The quench vent outside the MR facility is inspected by who?
|| || || || || || || || || ||
a. facility engineers
|| ||
b. manufacture engineer
|| ||
c. MR tech
|| ||
d. MRMD ✔✔ a. facility engineers
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If a cryogen comes in contact with skin, what will happen?
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a. frostbite/necrosis
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b. nothing, in its gas form
|| || || || ||
c. explode
||
d. combust ✔✔ a. frostbite/necrosis
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Why is asphyxia a risk associated with a quench malfunction?
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a. air is displaced by expanding helium gas
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b. helium is flammable so if ignighted, it can burn breathable air.
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c. temperatures get so cold that the diaphram contracts
|| || || || || || || ||
,d. the changing magnetic field associated with a quench that induction in the diaphram to
|| || || || || || || || || || || || || || ||
contract. ✔✔ a. air is displaced by expanding helium gas
|| || || || || || || || ||
What would we expect to see when a malfunctioned quench causes helium to leak into the
|| || || || || || || || || || || || || || || ||
MR room? Select all that apply.
|| || || || ||
a. decrease in room temperature
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b. increase in room temperature
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c. decrease in magnetic field strength
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d. increase in RF heating ✔✔ a. decrease in room temperature
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c. decrease in magnetic field strength
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A designated MR personnel should be present during a quench if the MRSO cannot be.
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a. True
||
b. False ✔✔ a. True
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A conservative approach to breast-feeding after a mother receives gadolinium contrast is:
|| || || || || || || || || || ||
a. to continue breast-feeding immediately after receiving an intravenous injection of
|| || || || || || || || || || ||
gadolinium contrast. ||
b. to wait 12-24 hrs to breast feed after an intravenous injection of gadolinium contrast.
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c. to pump and dump breastmilk for 48 hrs after an intravenous injection of gadolinium.
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d. to mix formula with breastmilk for 24 hrs after an intravenous injection of gad. ✔✔ b. to
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wait 12-24 hrs to breast feed after an intravenous injection of gadolinium contrast.
|| || || || || || || || || || || ||
Gadolinium contrast media is excreted into breastmilk in an unstable non-water soluble
|| || || || || || || || || || || ||
form.
a. true
||
b. false ✔✔ b. false
|| || || ||
, Approximately how much gadolinium is absorbed by an infant from a mother who has
|| || || || || || || || || || || || || ||
breastfed them and has received a dose of gadolinium contrast?
|| || || || || || || || ||
a. >1%
||
b.<0.0004%
c. 0.04%
||
d. 20% ✔✔ b.<0.0004%
|| || ||
Which of the following agents yields the best chance for transmetallation to occur?
|| || || || || || || || || || || ||
a. linear non-ionic
|| ||
b. linear ionic
|| ||
c. macrocyclic non-ionic
|| ||
d. macrocyclic ionic ✔✔ a. linear non-ionic
|| || || || || ||
Which of the following agents is the most stable?
|| || || || || || || ||
a. linear non-ionic
|| ||
b. linear ionic
|| ||
c. macrocyclic
|| ||
d. all are equally stable ✔✔ c. macrocyclic
|| || || || || || ||
Which of the following was a sign to researchers that something was happening to renal
|| || || || || || || || || || || || || || ||
compromised patients who received gad prior to uncovering the link of gadolinium contrast
|| || || || || || || || || || || || ||
and NSF?
||
a. Elevated levels of zinc in the urine
|| || || || || || ||
b. nausea immediately after a bolus of gad
|| || || || || || ||
c. confusion and chronic headaches in patients 1 month after injection.
|| || || || || || || || || ||
The quench vent in the MR room should be inspected by who?
|| || || || || || || || || || ||
a. facility engineers
|| ||
b. manufacturer engineers
|| ||
c. MR tech
|| ||
d. MRMD ✔✔ b. manufacturer engineers
|| || || || ||
The quench vent outside the MR facility is inspected by who?
|| || || || || || || || || ||
a. facility engineers
|| ||
b. manufacture engineer
|| ||
c. MR tech
|| ||
d. MRMD ✔✔ a. facility engineers
|| || || || ||
If a cryogen comes in contact with skin, what will happen?
|| || || || || || || || || ||
a. frostbite/necrosis
||
b. nothing, in its gas form
|| || || || ||
c. explode
||
d. combust ✔✔ a. frostbite/necrosis
|| || || ||
Why is asphyxia a risk associated with a quench malfunction?
|| || || || || || || || ||
a. air is displaced by expanding helium gas
|| || || || || || ||
b. helium is flammable so if ignighted, it can burn breathable air.
|| || || || || || || || || || ||
c. temperatures get so cold that the diaphram contracts
|| || || || || || || ||
,d. the changing magnetic field associated with a quench that induction in the diaphram to
|| || || || || || || || || || || || || || ||
contract. ✔✔ a. air is displaced by expanding helium gas
|| || || || || || || || ||
What would we expect to see when a malfunctioned quench causes helium to leak into the
|| || || || || || || || || || || || || || || ||
MR room? Select all that apply.
|| || || || ||
a. decrease in room temperature
|| || || ||
b. increase in room temperature
|| || || ||
c. decrease in magnetic field strength
|| || || || ||
d. increase in RF heating ✔✔ a. decrease in room temperature
|| || || || || || || || || ||
c. decrease in magnetic field strength
|| || || || ||
A designated MR personnel should be present during a quench if the MRSO cannot be.
|| || || || || || || || || || || || || ||
a. True
||
b. False ✔✔ a. True
|| || || ||
A conservative approach to breast-feeding after a mother receives gadolinium contrast is:
|| || || || || || || || || || ||
a. to continue breast-feeding immediately after receiving an intravenous injection of
|| || || || || || || || || || ||
gadolinium contrast. ||
b. to wait 12-24 hrs to breast feed after an intravenous injection of gadolinium contrast.
|| || || || || || || || || || || || || ||
c. to pump and dump breastmilk for 48 hrs after an intravenous injection of gadolinium.
|| || || || || || || || || || || || || ||
d. to mix formula with breastmilk for 24 hrs after an intravenous injection of gad. ✔✔ b. to
|| || || || || || || || || || || || || || || || || ||
wait 12-24 hrs to breast feed after an intravenous injection of gadolinium contrast.
|| || || || || || || || || || || ||
Gadolinium contrast media is excreted into breastmilk in an unstable non-water soluble
|| || || || || || || || || || || ||
form.
a. true
||
b. false ✔✔ b. false
|| || || ||
, Approximately how much gadolinium is absorbed by an infant from a mother who has
|| || || || || || || || || || || || || ||
breastfed them and has received a dose of gadolinium contrast?
|| || || || || || || || ||
a. >1%
||
b.<0.0004%
c. 0.04%
||
d. 20% ✔✔ b.<0.0004%
|| || ||
Which of the following agents yields the best chance for transmetallation to occur?
|| || || || || || || || || || || ||
a. linear non-ionic
|| ||
b. linear ionic
|| ||
c. macrocyclic non-ionic
|| ||
d. macrocyclic ionic ✔✔ a. linear non-ionic
|| || || || || ||
Which of the following agents is the most stable?
|| || || || || || || ||
a. linear non-ionic
|| ||
b. linear ionic
|| ||
c. macrocyclic
|| ||
d. all are equally stable ✔✔ c. macrocyclic
|| || || || || || ||
Which of the following was a sign to researchers that something was happening to renal
|| || || || || || || || || || || || || || ||
compromised patients who received gad prior to uncovering the link of gadolinium contrast
|| || || || || || || || || || || || ||
and NSF?
||
a. Elevated levels of zinc in the urine
|| || || || || || ||
b. nausea immediately after a bolus of gad
|| || || || || || ||
c. confusion and chronic headaches in patients 1 month after injection.
|| || || || || || || || || ||
