18 Questions
What is the primary mechanism by which Gadolinium decreases T1 relaxation times?
By aligning the rotation of molecules with the Larmor frequency
What is the primary hazard associated with magnetic quench?
Dense white vapor and helium meter dropping
What is the purpose of introducing contrast media in MRI scans?
To selectively affect the T1 and T2 relaxation times in tissues
What is the effect of Gadolinium on the signal intensity of T1 weighted images?
It increases the signal intensity
What is the characteristic property of a solution that affects the rotation of molecules?
Frequency of rotation
What should be done in the event of a magnetic quench?
Evacuate the patient and personnel from the scan room and close the scan room door
What is a potential risk associated with the use of Gadolinium-based contrast agents in MRI?
Renal toxicity in individuals with impaired kidney function
What is a primary concern related to patient comfort during MRI scans?
Claustrophobia and anxiety related to enclosed spaces
What design feature in modern MRI scanners is expected to reduce the number of failed examinations?
Shorter and wider bores
What is a method used to improve patient comfort and reduce movement during MRI scans?
Head coil mirrors to maintain visible contact with staff outside the scanner
Why are emergency preparedness protocols necessary in MRI facilities?
To respond to medical emergencies during scans
What is a possible strategy used to alleviate patient anxiety during MRI scans?
Playing music through headphones
What is an important detail to share with the patient before an MRI exam?
The duration of the procedure
Why is it important for the technologist to remember the patient's name?
To establish a rapport with the patient
What instruction should be given to the patient regarding breathing or swallowing during an MRI exam?
Rehearse holding their breath and swallowing at specific times
Which of the following patients is unsuitable for an MRI exam?
A patient with an aneurysm clip
What is a potential hazard for patients with certain metallic objects during an MRI exam?
Heating or movement of the metal object
What should patients be checked for before an MRI exam?
MR incompatible objects
Learn about the hazards and emergency procedures in MRI scans, including magnetic quench, warning signs, and evacuation protocols.
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