MRI safety: a report of current practice and advancements in patient preparation and screening

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Radiological Safety

Background:

• Magnetic Resonance Imaging (MRI) provides detailed diagnostic images without ionizing radiation.
• Increasing use of high and ultra-high field strength MRI (e.g., 7 Tesla) necessitates stringent safety measures.
• Ferrous materials pose significant safety risks in high electromagnetic field environments.

Purpose of the Study:

• To review current patient screening and preparation standards for high magnetic field MRI.
• To describe the implementation of these standards at a specific institution.
• To introduce and evaluate a novel supplemental screening technique for ferrous materials.

Main Methods:

• Review of existing safety standards and institutional protocols for MRI patient screening.
• Description of a novel supplemental screening technique involving dimmed lighting.
• Detection of ferrous metal at the threshold of Zone IV based on light response.

Main Results:

• Current safety standards for patient screening are essential for high magnetic field MRI.
• The novel supplemental screening technique provides an additional layer of safety.
• Dimmed lighting can indicate the presence of ferrous materials near the MRI scanner.

Conclusions:

• Enhanced patient preparation and screening are vital for safe operation of ultra-high field MRI scanners.
• The novel dimmed lighting technique offers a practical, supplemental safety measure.
• Continuous evaluation and improvement of safety protocols are necessary as MRI technology advances.