Mono-planar T-Hex: Speed and flexibility for high-resolution 3D imaging.

ABSTRACT:

Purpose

The aim of this work is the reconciliation of high spatial and temporal resolution for MRI. For this purpose, a novel sampling strategy for 3D encoding is proposed, which provides flexible k-space segmentation along with uniform sampling density and benign filtering effects related to signal decay.

Methods

For time-critical MRI applications such as functional MRI (fMRI), 3D k-space is usually sampled by stacking together 2D trajectories such as echo planar imaging (EPI) or spiral readouts, where each shot covers one k-space plane. For very high temporal and medium to low spatial resolution, tilted hexagonal sampling (T-Hex) was recently proposed, which allows the acquisition of a larger k-space volume per excitation than can be covered with a planar readout. Here, T-

SUBMITTER: Engel M 

PROVIDER: S-EPMC9292510 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature