Tattoos and MRI Scans: Real Risks, Myths, and Safety Guidelines

No, tattoos do not explode in an MRI. This is a myth. However, certain tattoos—especially those with iron-based or metallic pigments—can heat up during an MRI, causing discomfort, burns, or image artifacts.

Actual Risks

• Thermal Injury: RF energy from the MRI can induce currents in conductive tattoo inks (iron oxide, titanium, ferromagnetic particles), leading to heating. Risk is higher with large, dark, or blackwork tattoos, and at higher field strengths (3T vs. 1.5T).
• Image Artifacts: Metallic pigments cause signal voids and distortion, potentially obscuring anatomy near the tattoo.
• Sensation: Warmth, tingling, or burning during the scan. Rarely, first- or second-degree burns.

Safety Guidelines

1. Inform Your Radiologist and Technologist: Disclose all tattoos, including permanent makeup, before the scan.
2. Use a Cold Compress or Padding: A cool, damp cloth or gel pad over the tattoo can dissipate heat.
3. Monitor Sensation: Use the squeeze ball to alert staff if you feel excessive heating.
4. Protocol Adjustments: Radiologists may lower SAR, use specific sequences, or limit scan time over tattooed areas.
5. Consider Alternative Imaging: If tattoo is directly over the region of interest (e.g., spinal tattoo for lumbar MRI), CT or ultrasound may be preferred.

Special Cases

• Fresh Tattoos (<6 weeks): Higher risk of heating and ink migration; delay MRI if possible.
• Cosmetic Tattoos (eyeliner, eyebrows): Can heat near eyes; inform tech for eye protection.
• Traumatic Tattoos (road rash, gunpowder): Contain foreign particles; similar precautions apply.

Most people with tattoos undergo MRI safely. Communication and protocol adjustments mitigate risks.