Does Left Ventricular High Frame Rate Echo-Particle Image Velocimetry (echoPIV) provide comparable estimation of left ventricular flow to 4D Flow MRI in patients?
High frame rate echoPIV is a reliable and high-temporal-resolution alternative to 4D flow MRI for assessing left ventricular flow, provided acoustic windows are adequate.
Given good B-mode image quality, echoPIV provides a reliable estimation of left ventricular flow, exhibiting spatial-temporal velocity distributions comparable to 4D flow MRI. Both modalities present respective strengths and limitations: echoPIV captured inter-beat variability and had higher temporal resolution, while MRI was more robust to patient BMI and anatomy.
Han et al. (Wed,) studied this question.