Transthoracic echocardiography and elastography of a healthy human left ventricle. (a), (b), (c), and (d) are the lateral, axial, radial, and circumferential systolic strains from myocardial elastography between end diastole and end systole, respectively. Strains are displayed on a scale of ± 50%. All the images were acquired approximately at the papillary muscle level and shown at end systole. Contributed by Elisa Konofagou (Columbia University, New York).
Kherlopian et al. BMC Systems Biology 2008 2:74 doi:10.1186/1752-0509-2-74