Magnetic Resonance Imaging (MRI) - Basic Safety Training Questions with Correct Answers
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Course
Magnetic Resonance Imaging
Institution
Magnetic Resonance Imaging
What is MRI? Correct Answer Uses a fixed or "static" magnetic field, rapidly changing magnetic fields and radiofrequency (RF) signals to visualize:
•Anatomy
•Tissue Characteristics
•Vascular Flow
•Chemical composition of tissue
--- No Radiation involved ---
Basic Component Correct ...
Magnetic Resonance Imaging (MRI) - Basic
Safety Training Questions with Correct
Answers
What is MRI? Correct Answer Uses a fixed or "static" magnetic field, rapidly changing
magnetic fields and radiofrequency (RF) signals to visualize:
•Anatomy
•Tissue Characteristics
•Vascular Flow
•Chemical composition of tissue
--- No Radiation involved ---
Basic Component Correct Answer - magnet
- gradient coils
- radio frequency coils
- computer
Magnetic fields are measured in Correct Answer Gauss (G) and Tesla (T)*
Magnetic Fields Correct Answer ABSOLUTELY NO MAGNETIC OBJECTS ARE
ALLOWED IN THE MRI ROOM
MRI Exams Correct Answer In an MRI examination, the patient is exposed to the
following:
- Strong Magnetic
- FieldRadio Frequency Waves (RF)
- Audible noise
what is a Magnetic Field Correct Answer Magnetic field is an invisible force that can
attract objects that have iron content (Fe).
Objects that are not ferrous (no iron content) will not be attracted to the magnet, Correct
Answer Wood, plastic, gold, silver, aluminum, brass, copper.
Common Misconceptions of MRI Correct Answer - If the system is switched OFF, then
the magnetic field will also be off.
- Bigger Objects cannot be pulled in by the magnet
- Small objects are not necessary to remove from patient or pocket
Projectile Effect Correct Answer - The static magnetic field exerts a strong force on
ferromagnetic or weakly magnetic objects
- They are attracted at high speed to the MRI scanner, causing severe or fatal injury to a
patient in the scanner or to anyone in their path
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