Integrated parallel reception, excitation, and shimming (iPRES) with multiple shim loops per radio-frequency coil element for improved B₀ shimming.

ABSTRACT:

Purpose

Integrated parallel reception, excitation, and shimming (iPRES) coil arrays allow radio-frequency currents and direct currents to flow in the same coils, which enables excitation/reception and localized B₀ shimming with a single coil array. The purpose of this work was to improve their shimming performance by adding the capability to shim higher-order local B₀ inhomogeneities that are smaller than the radio-frequency coil elements.

Methods

A novel design was proposed in which each radio-frequency/shim coil element is divided into multiple direct current loops, each using an independent direct current current, to increase the number of magnetic fields available for shimming while maintaining the signal-to-noise ratio of the coil. This new design

SUBMITTER: Darnell D 

PROVIDER: S-EPMC5107366 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature