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Magnetic Nails & MRI Scans: What You Need to Know
17 Apr
Summary
- Magnetic nail polish contains iron oxide particles.
- Particles are usually minimal and embedded in polish.
- Disclosure to technicians is recommended before MRI scans.
The viral trend of magnetic cat eye nail polish has sparked questions regarding its safety during MRI scans due to the presence of iron oxide particles.
While these particles are minimal and embedded within the polish, they do respond to magnets. Experts indicate that in most cases, they do not pose a direct physical threat of being pulled into the scanner.
However, strong MRI magnetic fields can theoretically cause image artifacts or minor heating if metallic particles are not tightly bound or are in high concentration.
Cosmetics with metallic ingredients, including iron oxide, can distort MRI images, especially near the scanned area. Though rare, metallic particle heating is a theoretical concern, with compromised image quality being more common.
Radiology professionals suggest disclosing the use of magnetic or metallic-based nail polish before an MRI. While removal is usually unnecessary, it may be requested if the scan targets the hands or if visible metallic particles are present.
