MRI screening Flashcards
Visitors and site employees entering the MR scan room with the patient ____________.
should be carefully screened for metal in the same manner as the patient
Patients with suspected intra-ocular metallic foreign bodies must be screened for metal prior to entering the MR scan room. This can be accomplished by:
Taking Xrays of the orbital region and obtaining documented radiologist clearance
Patients with tattooed eyeliner or other ferrous pigment eye region cosmetics should be advised of what possible complication during the MR exam?
Temporary skin irritation or swelling of the eyes or surrounding tissues
Patients in need of MRI IV gadolinium contrast should first have their glomerular filtration rate (GFR) checked if they:
A. Have a history of renal disease
B. Have a history of diabetes
C. Are over the age of 60
D. All of the above
all of the above
What is the objective to screening the patient before an MRI exam?
A. Obtain pertinent medical history
B. Rule out potentially hazardous metallic materials in/on the patient
C. Prepare the patient for the procedure/reduce anxiety
D. All of the above
All of the above
Which of the following should be educated about static magnetic fields and their effects?
A. Anesthesiologists administering conscious sedation
B. Nurses accompanying ICU patients
C. Respiratory therapists maintaining ventilation
D. Housekeeping department that cleans the scan room
E. All of the above
All of the above
Before being granted entry into an MRI environment, a patient should be screened for:
A. Pregnancy
B. Surgical implants
C. Trauma or injury
D. History of working with metal
E. All of the above
All of the above
When moving blood enters a magnetic field, an effect on the ECG seen as a “T wave swelling” or spike occurs, also known as
Magnetohydrodynamic effect
The effects of time varying magnetic fields can include all of the following EXCEPT
Warmth and/or increase in body temperature
Which of the following implants would be considered acceptable for an MRI scan at 1.5Tesla?
Heart valves
Patient screening in the MR environment should occur
More than once, by trained professional(s)
The general public is limited to a magnetic field of
5 Gauss
Image 63 represents ____________ labeling
MR conditional
Image 64 represents __________ labeling
MR safe
Image 65 represents ______________ labeling.
MR unsafe
A patient with an implant label seen in Image 65 would require
A different imaging modality be used as the implant is unable to enter the magnetic field
A patient with an implant label seen in Image 64 would require:
No restrictions on MR imaging approach
A patient with an implant label seen in Image 63 would require:
Strict manufacturer guidelines be followed (field strength, scan parameters, duration) to ensure patient safety
