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The temperature rise over 15\u2009min was determined through full\u2010wave electromagnetic simulations and direct measurements. The Finite Difference Time Domain (FDTD) method was used to quantify the 1\u2009g mass\u2010averaged specific absorption rate (pSAR<jats:sub>1g<\/jats:sub>) in 10 clinically relevant plate\u2010and\u2010screw configurations implanted in the Duke and Ella human body models at three anatomical locations: humerus, femur, and tibia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In the phantom study, the 6\u2009cm screw exhibited the highest SAR and temperature rise, demonstrating a resonance effect at 5T. However, in human body models, the worst\u2010case implant lengths shifted to 7\u201311\u2009cm, highlighting the influence of tissue heterogeneity on resonance conditions. SAR values were also affected by the implant's position within the RF coil. The strong agreement between simulations and measurements validates the computational approach.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study systematically evaluates RF\u2010induced heating in orthopedic implants within the newly approved 5T whole\u2010body MRI, demonstrating that implant length, positioning, and surrounding media significantly impact heating risks. The findings highlight the necessity for updated MRI safety guidelines at UHF strengths, as implant safety conditions at 5T systems may differ from those at 1.5 and 3T MRI systems.<\/jats:p><\/jats:sec>","DOI":"10.1002\/mrm.70024","type":"journal-article","created":{"date-parts":[[2025,8,11]],"date-time":"2025-08-11T07:19:49Z","timestamp":1754896789000},"page":"2632-2642","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Numerical and experimental study of RF\u2010induced heating of passive implantable medical devices at 5T MRI"],"prefix":"10.1002","volume":"94","author":[{"given":"Mir Khadiza","family":"Akter","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering University of Houston   Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ao","family":"Shen","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering University of Houston   Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Md Zahidul","family":"Islam","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering University of Houston   Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lingfei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering University of Houston   Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8998-9561","authenticated-orcid":false,"given":"Jianfeng","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering University of Houston   Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6944-2729","authenticated-orcid":false,"given":"Ji","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering University of Houston   Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,8,11]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.28131"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.22086"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1227\/NEU.0b013e3181f74105"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.20281"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.21037\/qims.2016.12.12"},{"key":"e_1_2_6_7_1","unstructured":"United Imaging Receives FDA Clearance for Breakthrough 5T MRI System. 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