Figure 2 - Echocardiographic assessment of cardiac graft function, performed on a transplanted mouse heart using a 30-mHz transducer.
From the following article
Heterotopic vascularized murine cardiac transplantation to study graft arteriopathy
Tomomi Hasegawa, Scott H Visovatti, Matthew C Hyman, Takanori Hayasaki & David J Pinsky
Nature Protocols 2, 471 - 480 (2007) Published online: 15 March 2007
doi:10.1038/nprot.2007.48

Freeze-frame images at end-diastole (a) and end-systole (b) permit calculation of percentage fractional area change (%FAC) as a measure of contractile function, and left ventricular mass. Sample endocardial contour tracings are shown in the lower set of images at end-diastole (c) and end-systole (d). Note the papillary muscle at the superior aspect of the tracing.
