Non-contrast-enhanced abdominal MRA at 3 T using velocity-selective pulse trains.

ABSTRACT:

Purpose

Most existing non-contrast-enhanced methods for abdominal MR arteriography rely on a spatially selective inversion (SSI) pulse with a delay to null both static tissue and venous blood, and are limited to small spatial coverage due to the sensitivity to slow arterial inflow. Velocity-selective inversion (VSI) based approach has been shown to preserve the arterial blood inside the imaging volume at 1.5 T. Recently, velocity-selective saturation (VSS) pulse trains were applied to suppress the static tissue and have been combined with SSI pulses for cerebral MR arteriography at 3 T. The aim of this study is to construct an abdominal MRA protocol with large spatial coverage at 3 T using advanced velocity-selective pulse trains.

Methods

Multiple velocity-selective MRA prot

SUBMITTER: Zhu D 

PROVIDER: S-EPMC7263981 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature