Diffusion tensor brain imaging at 0.55T: A feasibility study.

ABSTRACT:

Purpose

To investigate the feasibility of diffusion tensor brain imaging at 0.55T with comparisons against 3T.

Methods

Diffusion tensor imaging data with 2 mm isotropic resolution was acquired on a cohort of five healthy subjects using both 0.55T and 3T scanners. The signal-to-noise ratio (SNR) of the 0.55T data was improved using a previous SNR-enhancing joint reconstruction method that jointly reconstructs the entire set of diffusion weighted images from k-space using shared-edge constraints. Quantitative diffusion tensor parameters were estimated and compared across field strengths. We also performed a test-retest assessment of repeatability at each field strength.

Results

After applying SNR-enhancing joint reconstruction, the diffusion tensor parameters obtained f

SUBMITTER: Kung HT 

PROVIDER: S-EPMC12732710 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature