Tattoos and MRIs: What You Need to Know
MRI Safety for Tattooed Individuals
Before undergoing an MRI (magnetic resonance imaging) scan, it’s crucial for patients to remove all metal from their bodies, including jewelry, piercings, and underwire. These objects can interfere with the strong magnetic fields used in MRI machines, potentially causing serious injuries.
However, it’s not just metal that can pose a risk during an MRI. Certain types of tattoo inks can also become problematic.
Tattoo Inks and MRI Burns
Some tattoo inks contain metallic pigments, particularly iron oxides. When exposed to the strong magnetic fields of an MRI machine, these pigments can create an electric current that increases skin temperature, potentially leading to burns.
While rare, there have been several case reports and studies documenting MRI-related burns in tattooed individuals. One study focused on a professional football player who suffered a burn during an MRI, highlighting the potential risks for athletes who frequently undergo imaging for musculoskeletal injuries.
Beyond Iron Oxides
Interestingly, MRI burns can also occur in people with tattoo inks that do not contain iron oxides. A case study reported a woman with permanent makeup tattooed onto her eyelids who experienced burns during an MRI. Analysis of the tattoo ink revealed the presence of various heavy metals, including lead, copper, zinc, and arsenic.
FDA Regulation and Disclosure
Tattoo inks are not regulated by the FDA, making it difficult to determine the exact ingredients used in different brands. This lack of regulation raises concerns about whether manufacturers are fully disclosing the chemical composition of their products.
Risks and Benefits
While MRI burns from tattoo inks are uncommon, it’s important to be aware of the potential risks. However, the benefits of MRI scans often outweigh the risks. If a doctor orders an MRI, it’s generally advisable to proceed with the procedure, even if you have tattoos.
Precautions
To minimize the risks associated with tattoos and MRIs, it’s essential to:
- Inform your doctor and MRI technician about any tattoos you have.
- Remove all jewelry and piercings before the scan.
- Cover tattoos with a non-metallic dressing, if possible.
- Be aware of the potential for skin irritation or burning during the MRI.
- If you experience any discomfort, immediately inform the MRI technician.
Conclusion
While tattoo inks can pose risks during MRIs, these risks are relatively low. By taking proper precautions and informing your doctor about your tattoos, you can safely undergo MRI scans when necessary.