On the RF safety of titanium mesh head implants in 7 T MRI systems: an investigation.

ABSTRACT:

Purpose

Patients undergoing craniofacial surgery for skull reconstruction may have titanium mesh implants. The safety risks related to 7 T MRI with these patients are not well understood. This study investigates the RF heating of titanium mesh head implants at 7 T.

Methods

A simulation model for a 7 T birdcage head coil was developed and validated against B1+$$ \left|{B}_1^{+}\right| $$ , 1 g-averaged 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-case scenario in a spherical phantom in addition to the effect of rounding the mesh edges. Full-wave electromagnetic and bioheat thermal simulations were conducted on anatomical human

SUBMITTER: Mustafa M 

PROVIDER: S-EPMC12021313 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature