Balanced steady-state free precession phase contrast at 0.55T applied to aortic flow.

ABSTRACT:

Background

There is a growing interest in the development and application of mid-field (0.55T) for cardiovascular magnetic resonance (CMR), including flow imaging. However, aortic flow imaging at 0.55T has limited signal-to-noise ratio (SNR), especially in diastolic phases where there is reduced inflow-driven contrast for spoiled gradient recalled echo (GRE) sequences. The low SNR can limit the accuracy of flow and regurgitant fraction measurements.

Methods

In this work, we developed a two-dimensional phase contrast (PC) acquisition with balanced steady-state free precession (bSSFP), termed PC-SSFP, for flow imaging and quantification at 0.55T. This PC-SSFP approach precisely nulls the zeroth and first gradient moments at both the echo time (TE) and repetition time, except f

SUBMITTER: Xiang J 

PROVIDER: S-EPMC11638602 | biostudies-literature | 2024 Winter

REPOSITORIES: biostudies-literature