An evaluation of the coax monopole antenna as a transmit array element for head imaging at 14 T.

ABSTRACT:

Purpose

In comparison to dipole antennas, the coax monopole antenna (CMA) diminishes the possibility of cable-coil coupling. This greatly facilitates cable routing in spatially restricted environments, such as head coil arrays. With the outlook of a 14T MRI system being installed at the Donders Center in Nijmegen, the Netherlands, this study aims to optimize the CMA for an eight-channel head array at 14 T and compare its performance with an array of fractionated dipole antennas.

Methods

Both antenna designs were optimized for head imaging at 14 T using single-channel finite-difference time-domain (FDTD) simulations at 596 MHz. Eight-channel simulations were then used on a human model to evaluate B1+$$ {\mathrm{B}}_1^{+} $$ and specific absorption rate (SAR) distributions. Fo

SUBMITTER: Bude LMI 

PROVIDER: S-EPMC11971495 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature