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The safety risks related to 7\u2009T MRI with these patients are not well understood. This study investigates the RF heating of titanium mesh head implants at 7\u2009T.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A simulation model for a 7\u2009T birdcage head coil was developed and validated against , 1\u2009g\u2010averaged specific absorption rate (SAR), and temperature measurements in the presence of a titanium mesh. Various mesh sizes and shapes at different angular positions were simulated to determine the worst\u2010case scenario in a spherical phantom in addition to the effect of rounding the mesh edges. Full\u2010wave electromagnetic and bioheat thermal simulations were conducted on anatomical human models.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Preliminary results indicate an increase in the local SAR near the meshes depending on the shape, size, and location. The maximum absolute temperatures in the head were, on average, around 38.2\u00b0C after 15\u2009min of RF power exposure, corresponding to 3.2\u2009W\/kg whole\u2010head SAR without a titanium mesh implant. The maximum absolute temperatures did not significantly change after introducing the titanium mesh implants, and the highest temperature was 38.4\u00b0C, observed near the cerebellum and the facial muscles. The maximum local increase in temperature was observed at the vicinity of the mesh as 2.8\u00b0C. Finally, it was shown that large mesh implants can negatively impact  field.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Small rounded titanium mesh head implants can be generally safe for 7\u2009T MRI scans under the standard guidelines. Avoiding sharp corners and edges may reduce the chances of RF safety risks.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/mrm.30477","type":"journal-article","created":{"date-parts":[[2025,3,11]],"date-time":"2025-03-11T09:12:12Z","timestamp":1741684332000},"page":"414-423","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["On the\n                    <scp>RF<\/scp>\n                    safety of titanium mesh head implants in\n                    <scp>7\u2009T MRI<\/scp>\n                    systems: an investigation"],"prefix":"10.1002","volume":"94","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5273-7456","authenticated-orcid":false,"given":"Mazin","family":"Mustafa","sequence":"first","affiliation":[{"name":"Center for Magnetic Resonance Research University of Minnesota at Twin Cities  Minneapolis Minnesota 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