Combined T₂ -preparation and multidimensional outer volume suppression for coronary artery imaging with 3D cones trajectories.

ABSTRACT:

Purpose

To develop a modular magnetization preparation sequence for combined T₂ -preparation and multidimensional outer volume suppression (OVS) for coronary artery imaging.

Methods

A combined T₂ -prepared 1D OVS sequence with fat saturation was defined to contain a 90°_-60 180°₆₀ composite nonselective tip-down pulse, two 180°_Y hard pulses for refocusing, and a -90° spectral-spatial sinc tip-up pulse. For 2D OVS, 2 modules were concatenated, selective in X and then Y. Bloch simulations predicted robustness of the sequence to B₀ and B₁ inhomogeneities. The proposed sequence was compared with a T₂ -prepared 2D OVS sequence proposed by Luo et al, which uses a spatially selective 2D spiral ti

SUBMITTER: Zeng DY 

PROVIDER: S-EPMC7047567 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature