Free-breathing whole-heart 3D cine magnetic resonance imaging with prospective respiratory motion compensation.

ABSTRACT:

Purpose

To develop and validate a new prospective respiratory motion compensation algorithm for free-breathing whole-heart 3D cine steady-state free precession (SSFP) imaging.

Methods

In a 3D cine SSFP sequence, 4 excitations per cardiac cycle are re-purposed to prospectively track heart position. Specifically, their 1D image is reconstructed and routed into the scanner's standard diaphragmatic navigator processing system. If all 4 signals are in end-expiration, cine image data from the entire cardiac cycle is accepted for image reconstruction. Prospective validation was carried out in patients (N = 17) by comparing in each a conventional breath-hold 2D cine ventricular short-axis stack and a free-breathing whole-heart 3D cine data set.

Results

All 3D cine SSFP acquis

SUBMITTER: Moghari MH 

PROVIDER: S-EPMC5876089 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature