Meeting Banner
Abstract #0078

Dual-Projection Cardiac and Respiratory Self-Navigated Cine Imaging Using SSFP

Liheng Guo1, Elliot R. McVeigh1, Robert J. Lederman2, J Andrew Derbyshire2, Daniel A. Herzka1

1Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States; 2Translational Medicine Branch, National Heart, Lung, and Blood Institute, National Institute of Health, Bethesda, MD, United States

A dual-projection self-navigated SSFP sequence is implemented to acquire navigation projections at two alternating angles during all TRs; it offers projections of high spatiotemporal resolution at two different orientations, thus providing a platform for 2D motion tracking and robust self-navigation, which can replace the standard ECG gating and patient breath hold. Preliminary post-processing of the projection data has shown that cardiac and respiratory motions can be automatically extracted and separated, and that free-breathing cardiac cine images can be automatically reconstructed to comparable quality as standard breath-hold images.