A comprehensive electromagnetic evaluation of an MRI anthropomorphic head phantom.

ABSTRACT: Electromagnetic simulations are an important tool for the safety assessment of RF coils. They are a useful resource for MRI RF coil designers, especially when complemented with experimental measurements and testing using physical phantoms. Regular-shaped (spherical/cylindrical) homogeneous phantoms are the MRI standard for RF testing but are somewhat inaccurate when compared with anthropomorphic anatomies, especially at high frequencies. In this work, using a recently developed anthropomorphic heterogeneous human head phantom, studies were performed to analyze the scattering parameters (S-parameters) and the electric and magnetic field distributions using (1) the B₁⁺ field mapping method on a 7 T human MRI scanner and (2) numerical full-wave electromagnetic simulation

SUBMITTER: Wood S 

PROVIDER: S-EPMC8080257 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature