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Abstract #2221

Modelling the RF safety of tattoo pigment ink for subjects undergoing 7 Tesla MRI

Hongbae Jeong1, Aaron Hess2, and Peter Jezzard1

1FMRIB Centre, University of Oxford, Oxford, United Kingdom, 2Department of Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom

Despite many reports of skin burns in the region of tattoos, there are few safety studies concerning RF heating caused by tattoos. Manufacturers of tattoo ink are numerous and use a range of dye ingredients, making it difficult to assess the electromagnetic properties of each ink pigment. An anchor-shaped tattoo was modelled 1mm under the skin layer in the region of the cervical spine to predict a possible skin burn generated by RF coil. A simulation model of RF heating in tattoo pigment is proposed, which shows that certain tattoo pigments may lead to severe skin burns when performing high field MRI.

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