An 8Tx/32Rx head-neck coil at 7T by combining 2Tx/32Rx Nova coil with 6Tx shielded coaxial cable elements.

ABSTRACT:

Purpose

Standard head coils used at 7T MRI suffer from high signal loss at lower brain regions and neck. This study aimed to increase the field of view (FOV) of a birdcage coil to image the lower brain regions and neck with a straightforward approach of using add-on transmit shielded coaxial cable coil (SCC) elements.

Methods

A new head-neck coil was modeled as a combination of the 2Tx/32Rx Nova head coil and 6Tx SCC elements. The add-on transmit SCC elements have been produced. The full wave electromagnetic simulations were performed to analyze the coil geometry and estimate the local specific absorption ratio (SAR). The B1+$$ {\mathrm{B}}_1^{+} $$ field maps and structural images were acquired in a phantom and in vivo on a 7T scanner.

Results

The computed SAR histog

SUBMITTER: Guler S 

PROVIDER: S-EPMC11604854 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature