The Magnetic Resonance Imaging area is divided into _____ zones.

• A. Four
• B. Two
• C. Three
• D. Five

Answer: (A)

MRI safety uses a tiered zoning approach so access and precautions tighten as you move toward the magnet. The outer area is generally accessible, then there’s a buffer zone where screening occurs, followed by a restricted area with supervision and stricter access controls, and finally the magnet room itself where the strongest magnetic field is present. This structure helps prevent hazards such as ferromagnetic objects becoming projectiles, interference with medical devices, and RF heating, by ensuring that anyone entering the inner zones has been properly screened and cleared. In practice, this means the MRI area is organized into multiple zones with progressively tighter safety rules and screening requirements, aligning with the goal of preventing accidents and keeping patients and staff safe.