Vortex imaging: new information gain from tracking cardiac energy loss

Editorial on the manuscript: Stugaard M, Koriyama H, Katsuki K, Masuda K, Asanuma T, Takeda Yet al. Energy loss in the left ventricle obtained by vector flow mapping as a new quantitative measure of severity of aortic regurgitation. a combined experimental and clinical study. EurHeart J, Cardiovasc Imag 2015; (same issue).