EX 3 Flashcards
Pregnant workers working in MRI must follow which of the following restrictions?
Avoid exposure of magnetic fields greater than 200mT
Do not move faster than 1T/s in the MRI environment
Do not stay in the MRI room during acquisition
All of the choices
Do not stay in the MRI room during acquisition
What is another name for quadrature RF exposure?
Circular polarized
Linear
Parallel
None of the choices
Circular polarized
A patient is pregnant. How should we scan our patient?
Image them at 7T or less
Use a circularly polarized exposure
Keep acquisition to no more than 2 hours
All of the choices
Use a circularly polarized exposure
The amount of RF exposed averaged over 10 seconds is defined by what?
SAR
B1+rms
T/m
Tesla
B1+rms
A pacemaker is considered a / an _____ implant.
Active
Passive
Active
An implanted pain pump is considered a / an ______ implant.
Active
Passive
Active
A loop recorder is considered a/an ____ implant.
Active
Passive
Active
A joint replacement is considered a/ an ______ implant.
Active
Passive
Passive
Which of the following is the riskiest implanted device listed?
Pacemaker
Deep brain stimulator
Loop recorder
Aneurysm clip
Deep brain stimulato
Patients with deep brain stimulators are at a higher risk of injury if conditions are not followed.
True
False
True
Which of the following can cause a burn on our patient?
External fixator
Aneurysm clip
Heart stent
Cloth hernia repair
External fixator
External fixator devices are contraindicated for MRI imaging.
True
False
False
A patient has a medication patch, what do we need to look for when reducing risk to the patient?
Type of medication
Metallic backing
Size of the patch
All of the choices
Metallic backing
What situation would potentially cause a patient burn?
Foiled backed medication patch
A cardiac stent
Aneurysm clip
bone screw
Foiled backed medication patch
Which of the following would be MR safe?
Metallic stent
Plastic stent
Pacemaker
Carbon fiber fixator rod
Plastic stent
A patient codes during an MRI exam. What do we do first
CPR to stablize patient
Remove patient from room
Bring crashcart to patient
Call for help
CPR to stablize patient
Screening of a patient must be done by whom before they enter zone 3?
Level 1 MR personnel
Level 2 MR personnel
Non-MR personnel
Patient
Level 2 MR personnel
A written screening sheet is sufficient for a patient to be considered MR screened.
True
False
False
What is true before scanning a patient?
Change patient into cotton gown
Leave patient in there street clothing
Change patient into gown with snaps
Make sure they are wearing yoga pants
Change patient into cotton gown
It is acceptable for patients to wear which of the following for their MRI exam?
Yoga pants
Cotton gown
Layers of clothing
Street clothing
Cotton gown
All the following should be visualized according to the line of sight rule except what?
Scanning console
Level 1 MR Personnel
Patient
Door to zone 4
Level 1 MR Personnel
What is the purpose of the line of sight rule?
To make sure any threats to the patient are monitored
To make sure the patient does not get a burn
To make sure we have the correct patient
To make sure we are charting the correct information on the patient
To make sure any threats to the patient are monitored
The level 1 MR personnel can escort a patient through what zones?
Zone 1 and 2
Zone 1, 2, and 3
Zone 1 only
Zone 1, 2, 3, and 4
Zone 1 and 2
The level 1 MR personnel can not escort a patient into what zones?
Zone 1 and 2
Zone 3 and 4
Zone 2, 3, and 4
Zone 4 only
Zone 3 and 4