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Skin temperature increase during local exposure to high‐power RF levels in humans
Author(s) -
van den Bergh Adrianus J.,
van den Boogert Hendrikus J.,
Heerschap Arend
Publication year - 2000
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/(sici)1522-2594(200003)43:3<488::aid-mrm22>3.0.co;2-d
Subject(s) - specific absorption rate , skin temperature , absorption (acoustics) , food and drug administration , radiation , chemistry , materials science , zoology , nuclear magnetic resonance , nuclear medicine , medicine , biomedical engineering , biology , optics , pharmacology , physics , telecommunications , computer science , antenna (radio) , composite material
Abstract The local temperature response of the skin on heating due to prolonged exposure to RF radiation by a surface coil was investigated in five healthy volunteers. Temperature changes induced by RF radiation were measured at the skin of the calf muscle by a fluoroptic probe. Exposure to superficial specific absorption rate (SAR) levels of 6.5, 12 and 22 W/kg resulted in skin temperature increases, the highest temperature recorded was 38.3°C. Although the maximum values of each temperature curve correlated with the applied superficial SAR levels, these values did not exceed the recommended temperature limit for the extremities such as given by the Food and Drug Administration (FDA). Magn Reson Med 43:488–490, 2000. © 2000 Wiley‐Liss, Inc.