Prospective motion and B₀ shim correction for MR spectroscopy in human brain at 7T.

ABSTRACT:

Purpose

To demonstrate feasibility and performance of prospective motion and B₀ shim correction for MRS in human brain at 7T.

Methods

Prospective motion correction using an optical camera and linear B₀ shim correction using FASTMAP-like navigators were implemented into a semi-LASER sequence. The effect of motion on spectral quality was assessed without and with prospective correction in prefrontal cortex in 11 subjects.

Results

Without prospective motion and shim correction, motion resulted in considerable degradation of MR spectra (broader linewidth, lower signal-to-noise ratio, degraded water suppression). With prospective motion and shim correction, spectral quality remained excellent despite motion. Prospective motion correction alone was not

SUBMITTER: Deelchand DK 

PROVIDER: S-EPMC6717003 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature