A 3D hybrid-shot spiral sequence for hyperpolarized 13C imaging.

ABSTRACT:

Purpose

Hyperpolarized imaging experiments have conflicting requirements of high spatial, temporal, and spectral resolution. Spectral-spatial RF excitation has been shown to form an attractive magnetization-efficient method for hyperpolarized imaging, but the optimum readout strategy is not yet known.

Methods

In this work, we propose a novel 3D hybrid-shot spiral sequence which features two constant density regions that permit the retrospective reconstruction of either high spatial or high temporal resolution images post hoc, (adaptive spatiotemporal imaging) allowing greater flexibility in acquisition and reconstruction.

Results

We have implemented this sequence, both via simulation and on a preclinical scanner, to demonstrate its feasibility, in both a 1H phantom an

SUBMITTER: Tyler A 

PROVIDER: S-EPMC7611357 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature