MRI safety zones are delineated areas within an MRI suite that help to manage the potential risks associated with powerful magnetic fields. The American College of Radiology (ACR) has classified these zones into four distinct levels, namely Zones I through IV.

2022年10月31日 · A brief guide to the four MRI zones for MRI technologists, including definitions of ACR-defined MRI safety zones, and screening processes.

What are the ACR Safety Zones? The American College of Radiology has defined four safety zones within MRI facilities. These are denoted Zones I through IV and correspond to levels of increasing magnetic field exposure (and hence potential safety concern).

2020年10月30日 · Zone Four: Sometimes called the magnet room, this is only accessible by passing Zone Three. At times, it is considered inside of Zone Three as it does not have access directly to other unrestricted areas.

Access to an MRI area should be restricted, with four progressive restriction zones: Zone I (general public), Zone II (unscreened MRI patients), Zone III (screened MRI patients and personnel), Zone IV (screened MRI patients under constant, …

Zone 4 is a potentially hazardous zone where magnetic fields are greater than 5 gauss. All persons entering Zone 4, including researchers, volunteers, and special visitors must fill out and sign appropriate screening forms.

2015年9月23日 · Zone 4- This zone is the actual MRI scanner. In this zone you must be accompanied by either an MRI core staff member or MRI safe staff member. You must have already gone through our MRI safety screening and have all …

Restrict access to the MR facility or space by establishing four conceptual zones around the MRI scanner. Each boundary zone in this four-zone safety system is defined by its purpose and distance from the MRI scanner. Since the magnetic field extends in three dimensions, some zones may extend into other areas or floors of the facility.

Zone 4: Magnet Room. No individual is allowed in the scan room without being supervised by trained MRI personnel. The scan room door is always locked when unattended. When the scan room door is opened, the MRI Safety barrier must be implemented at all times by MRI personnel (MRI Safety Barrier docx).

ACR MRI Safety recommendation is for a caution barrier to be installed at Zone 4 of the MRI suite. In 2020 the American College of Radiology published their “ACR Manual on MRI Safety”. In this manual the ACR makes recommendations for helping to secure the MR environment from Zone 1 to Zone 4.