RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging Systems
This paper presents radiofrequency (RF)-induced heating of single and multiple tattoos during magnetic resonance imaging (MRI) at 1.5 T and 3 T. Various tattoos of different shapes, positions, pigment, length, diameter, and gap between the tattoos was investigated. Finite-difference time-domain base...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2021-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9483925/ |
| _version_ | 1823930171561869312 |
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| author | Shahzeb Hayat Youngdae Cho Sukhoon Oh Hyoungsuk Yoo |
| author_facet | Shahzeb Hayat Youngdae Cho Sukhoon Oh Hyoungsuk Yoo |
| author_sort | Shahzeb Hayat |
| collection | DOAJ |
| description | This paper presents radiofrequency (RF)-induced heating of single and multiple tattoos during magnetic resonance imaging (MRI) at 1.5 T and 3 T. Various tattoos of different shapes, positions, pigment, length, diameter, and gap between the tattoos was investigated. Finite-difference time-domain based electromagnetic and thermal simulations were performed to study the specific absorption rate (SAR) and temperature rise, respectively. The results indicated that tattoos influenced the induced electric field distribution and maximum magnitude of the SAR on the surface of the skin. A notable enhancement in the SAR were observed around the sharp edges, long strips, and circular loops of tattoos. Interestingly, the maximum local SAR and increase in tissue temperature strongly depend on the shape of the tattoo. Furthermore, the relative position and size of the tattoos affected RF-induced heating. The RF-induced heating of multiple tattoos were investigated considering the worst case scenarios. Our results confirm that RF-induced heating of multiple tattoos is quite different from that of single tattoo and does not follow a simple superposition of the results from a single tattoos. Moreover, the procedures presented in the simulation environment are used to facilitate RF-induced heating for patients with tattoos undergoing clinical MRI. |
| first_indexed | 2024-12-16T21:20:59Z |
| format | Article |
| id | doaj.art-df35b431bdd9449ca3126e8af0683333 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T21:20:59Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-df35b431bdd9449ca3126e8af06833332022-12-21T22:15:55ZengIEEEIEEE Access2169-35362021-01-01910095110096110.1109/ACCESS.2021.30971459483925RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging SystemsShahzeb Hayat0https://orcid.org/0000-0003-3991-2923Youngdae Cho1https://orcid.org/0000-0002-0521-9103Sukhoon Oh2https://orcid.org/0000-0002-9625-240XHyoungsuk Yoo3https://orcid.org/0000-0001-5567-2566Department of Electronic Engineering, Hanyang University, Seoul, Republic of KoreaDepartment of Electronic Engineering, Hanyang University, Seoul, Republic of KoreaCenter for Research Equipment, Korea Basic Science Institute, Cheongju, Republic of KoreaDepartment of Electronic Engineering, Hanyang University, Seoul, Republic of KoreaThis paper presents radiofrequency (RF)-induced heating of single and multiple tattoos during magnetic resonance imaging (MRI) at 1.5 T and 3 T. Various tattoos of different shapes, positions, pigment, length, diameter, and gap between the tattoos was investigated. Finite-difference time-domain based electromagnetic and thermal simulations were performed to study the specific absorption rate (SAR) and temperature rise, respectively. The results indicated that tattoos influenced the induced electric field distribution and maximum magnitude of the SAR on the surface of the skin. A notable enhancement in the SAR were observed around the sharp edges, long strips, and circular loops of tattoos. Interestingly, the maximum local SAR and increase in tissue temperature strongly depend on the shape of the tattoo. Furthermore, the relative position and size of the tattoos affected RF-induced heating. The RF-induced heating of multiple tattoos were investigated considering the worst case scenarios. Our results confirm that RF-induced heating of multiple tattoos is quite different from that of single tattoo and does not follow a simple superposition of the results from a single tattoos. Moreover, the procedures presented in the simulation environment are used to facilitate RF-induced heating for patients with tattoos undergoing clinical MRI.https://ieeexplore.ieee.org/document/9483925/Body coilcase studyelectromagnetic simulationsMRI safetyRF heatingtattoos |
| spellingShingle | Shahzeb Hayat Youngdae Cho Sukhoon Oh Hyoungsuk Yoo RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging Systems IEEE Access Body coil case study electromagnetic simulations MRI safety RF heating tattoos |
| title | RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging Systems |
| title_full | RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging Systems |
| title_fullStr | RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging Systems |
| title_full_unstemmed | RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging Systems |
| title_short | RF-Induced Heating of Various Tattoos at Magnetic Resonance Imaging Systems |
| title_sort | rf induced heating of various tattoos at magnetic resonance imaging systems |
| topic | Body coil case study electromagnetic simulations MRI safety RF heating tattoos |
| url | https://ieeexplore.ieee.org/document/9483925/ |
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