A 128-channel receive array for cortical brain imaging at 7 T.

ABSTRACT:

Purpose

A 128-channel receive-only array for brain imaging at 7 T was simulated, designed, constructed, and tested within a high-performance head gradient designed for high-resolution functional imaging.

Methods

The coil used a tight-fitting helmet geometry populated with 128 loop elements and preamplifiers to fit into a 39 cm diameter space inside a built-in gradient. The signal-to-noise ratio (SNR) and parallel imaging performance (1/g) were measured in vivo and simulated using electromagnetic modeling. The histogram of 1/g factors was analyzed to assess the range of performance. The array's performance was compared to the industry-standard 32-channel receive array and a 64-channel research array.

Results

It was possible to construct the 128-channel array with body

SUBMITTER: Gruber B 

PROVIDER: S-EPMC10543549 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature