The effect of the MR imaging to tattoo or permanent makeup.

Research Project

Project/Area Number	15K19820
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Radiation science
Research Institution	Jikei University School of Medicine
Principal Investigator	Tomita Shoichi 東京慈恵会医科大学, 医学部, 講師 (40529715)
Project Period (FY)	2015-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000) Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords	刺青 / アートメイク / MRI検査 / 熱傷 / tattoo / 乳房再建 / 乳輪乳頭再建 / MRI
Outline of Final Research Achievements	There is concern that tattooed skin is at risk of being burned by MRI. However, a detailed evaluation of the impact of MRI on medically tattooed skin has not been performed. The study aimed to clarify the changes in common inorganic tattoo pigments during MRI in an animal model. Tattooed hairless mice with eight typical pigments for tattoos were evaluated for changes in temperature, color tone, and histology of the tattoos during a 9.4-T MRI. None of specimens had signs of burns. In terms of temperature changes, the black iron oxide and carbon black specimens had a maximum temperature increase of 0.4 degrees. In the Munsell color system, no specific color changes were observed before or after the MRI. Color changes evaluated as the ΔE00 in the Lab* color space were all lower than 3.0 and thus regarded as being indistinguishable and within the color unevenness of the tattoo. Histologic analysis of the specimens showed no significant changes before and after the MRIs.