Zone I
Who is Zone I open to?
The general public (no MRI restrictions)
What is the main purpose of Zone II?
Patient screening and controlled access
Is access to Zone III restricted?
Yes
What is located in Zone IV?
The MRI scanner
What does MRI stand for?
Magnetic Resonance Imaging
Name one example of a Zone I area
Waiting room / hallway / front desk
Who typically supervises Zone II?
MRI personnel
Who is allowed in Zone III?
Screened individuals only
What is always present in Zone IV?
The magnetic field (THE MAGNET IS ALWAYS ON)
What type of metal is most dangerous in MRI?
Ferromagnetic metal
Are patients screened for MRI safety in Zone I?
No
What critical process begins in Zone II?
MRI safety screening, Dressing, patient information.
What is required before entering Zone III?
Completed MRI screening
What are two of the biggests dangers in Zone IV?
Projectile (missile) effect and burns
What is the purpose of MRI screening forms?
To identify risks (implants, devices, metal)
Can ferromagnetic objects be present in Zone I?
Yes
Can unscreened patients enter Zone II?
Yes, but must be supervised
What must be verified before allowing any equipment into Zone III?
That it is MRI-safe or MRI-conditional
What emergency action may be used to remove the magnetic field?
Quench (Extremely costly and should only be done by mri tech)
Name one item that should NEVER enter Zone IV.
Oxygen tank / wheelchair / stretcher (if not MRI-safe)
What is the main safety concern in Zone I?
None specific to MRI
What is a key transition that occurs in Zone II?
Moving from public access to controlled MRI environment
What safety feature should control access to Zone III?
A: Locked or access-controlled entry
Why is a quench dangerous?
Rapid helium release → asphyxiation risk / frostbite / pressure issues
What should you do first if a patient codes in Zone IV?
Remove the patient from Zone IV before resuscitation