Comparison between fully and partially focused transmit strategies in transthoracic cardiac strain estimation

Myocardial elastography identifies ischemia and infarction by estimating strain. Focused beams with ECG-gating offers high spatial resolution and frame rate, but precludes imaging of arrhythmic patients. Wide beam and coherent compounding can estimate strain within a single heart cycle by trading off spatial resolution or frame rate. Compounding and wide beam sequences were optimized in silico and in vivo, and then compared with a focused, ECG-gated sequence in vivo.