Xiaoming Bi1, Jingsi Xie2,
Christopher Glielmi1, James Carr2, Debiao Li2,
Sven Zuehlsdorff1
1Siemens Healthcare,
The
goal of this work was to 1) investigate the feasibility of free-breathing BB
cardiac imaging using a single-shot bSSFP sequence; 2) compare the efficacy
of two BB methods: double inversion recovery (DIR) and T2IR for this
application. Parameters for DIR and T2IR were optimized based on numerical
simulations. Volunteer studies show that good quality 2D cardiac images can
be consistently acquired with effective blood suppression. DIR preparation
results in images with higher SNR and CNR while T2IR provides effective blood
nulling regardless of blood flow direction at the cost of myocardium signal
intensity.