Concomitant field compensation of spiral turbo spin-echo at 0.55 T.

ABSTRACT:

Objective

Diagnostic-quality neuroimaging methods are vital for widespread clinical adoption of low field MRI. Spiral imaging is an efficient acquisition method that can mitigate the reduced signal-to-noise ratio at lower field strengths. As concomitant field artifacts are worse at lower field, we propose a generalizable quadratic gradient-field nulling as an echo-to-echo compensation and apply it to spiral TSE at 0.55 T.

Materials and methods

A spiral in-out TSE acquisition was developed with a compensation for concomitant field variation between spiral interleaves, by adding bipolar gradients around each readout to minimize phase differences at each refocusing pulse. Simulations were performed to characterize concomitant field compensation approaches. We demonstrate our pr

SUBMITTER: Ramasawmy R 

PROVIDER: S-EPMC10771127 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature