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MRSO: EXAM 4 (ACTUAL) 2024 QUESTIONS AND ANSWERS
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MRSO: EXAM 4 (ACTUAL) 2024 QUESTIONS AND ANSWERS
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MRSO: EXAM 4 (ACTUAL) Which of the following techniques can be used to reduce patient heating? Select all that apply. a. Increase the flip angle b. Use a single shot spin echo c. Increase repetition time d. Alternate between spin echo pulse sequences and gradient echo sequences. - ANSWERS -c, d The quench vent in the MR room should be inspected by whom? a. MRMD b. Facility engineers c. MR tech d. Manufacture engineers - ANSWERS -d. Manufacture engineers A patient has an iliac stent and the manufacturer instructions say to not expose the implant to a SAR of 1.9 W/kg. You are scanning a knee with a transmit -receive coil. How do you scan this patient safely? a. The patient should be scanned with a receive only coil b. The implant will not receive RF heating c. The patient should not be scanned d. The patient should be scanned in normal mode - ANSWERS -b. The implant will not receive RF heating A conservative a pproach to breast feeding after a mother receives gad contrast is: a. To wait 12 -24 hours to breastfeed after an IV injection of gad b. To pump and dump breastmilk for 48 hours after an IV injection of gad c. To continue breastfeeding immediately after rec eiving an IV injection of gad d. To mix formula with breastmilk for 24 hours after an IV injection of gad contrast - ANSWERS -a. To wait 12 -24 hours to breastfeed after an IV injection of gad When handling a code in the MR environment, which of the followi ng are NOT best practices? a. all the choices should not be done b. Patient should be stable prior to removing from Zone IV c. Patient must be removed from Zone IV before calling a code d. It is suggested that a patient be brought to Zone II, but can be in Zone III if necessary to resuscitate the patient - ANSWERS -b. Patient must be stable prior to removing from Zone IV Which of the following are guidelines that can be used for scanning pacemakers on non -pacemaker dependent patients? a. A cardiologist or e lectrophysiologist with ACLS training must be present for the entire exam b. Pretest pacemaker function outside the MR environment c. Constant communication with the patient should take place. d. An electrophysiologist should test the device during acquisi tion. - ANSWERS -a, b, c Which of the following are a result of the static magnetic field? Select all that apply. a. Implants that have ferrous components can cause harm to patients in its presence b. Translational force and rotational force can occur with ferrous objects in its presence c. Cobalt can demonstrate the missile effect in its presence d. Patients are exposed to time -varying magnetic fields in its presence. - ANSWERS -a, b The time -varying magnetic field is produced by the gradient coils & RF transmitter. Ferrous objects can demonstrate rotational and translational forces. Cobalt is non -ferrous. The ICNIRP states that moving through a field strength above _________ may be high enough to produce vertigo and other sensory perceptions like nausea and magnetophosphenes. a. 2 T b. 3 TThe benefits of buying summaries with Stuvia:
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