MRI
From Biohacking Wiki
Risks
Mercury Leeching from Dental Fillings
For those who have amalgam dental fillings, exposure to a high-field MRI magnet might increase the leeching of mercury from the filling into the bloodstream [1]
Contrast Agent
Some risks for gadolinium-based contrast agents, especially for those with impaired kidney function. It is also possible that it can build up in the system and eventually cause problems.
Some alternatives are under development, such as those using Manganese or Iron. [2]
