A combined 32-channel receive-loops/8-channel transmit-dipoles coil array for whole-brain MR imaging at 7T.

ABSTRACT:

Purpose

Multichannel receive arrays provide high SNR and parallel-imaging capabilities, while transmit-only dipole arrays have been shown to achieve a large coverage of the whole-brain including the cerebellum. The aim of this study was to develop and characterize the performances of a 32-channel receive-only loop array combined with an 8-channel dipole coil array at 7T for the first time.

Methods

The 8Tx-dipoles/32Rx-loops coil array was characterized by the SNR, g-factors, noise correlation matrix, accelerated image quality, and B1+ maps, and compared with a commercial 1Tx-birdcage/32Rx-loops array. Simulated and measured B1+ maps were shown for the 8Tx-dipoles/32Rx-loops coil array and compared with the 8Tx/Rx dipole array.

Results

The in-house built 32-channel rec

SUBMITTER: Clement J 

PROVIDER: S-EPMC6618274 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature