Designing parallel transmit head coil arrays based on radiofrequency pulse performance.

ABSTRACT:

Purpose

A new approach to design parallel transmit (pTx) head arrays is proposed that integrates transmit radiofrequency pulse designs with electromagnetic modeling of array coil elements.

Theory and methods

An approach to design pTx head arrays is proposed that finds optimal groupings of a large number of coils into a small number of channels. An algorithm is proposed to extend array-compressed parallel transmit pulse design by adding the ability to optimally select and prune coil elements, in addition to optimizing compression weights. The performance of the method is demonstrated in simulations of dynamic multislice shimming of the human brain in axial, coronal, and sagittal directions, and of reduced field-of-view excitation targeting the human occipital lobe, with simul

SUBMITTER: Cao Z 

PROVIDER: S-EPMC7047538 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature