To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Sagittal long axis view. Magnetic resonance imaging (MRI) reveals high cardiac ejection fractions in red-footed tortoises (Chelonoidis carbonarius) Catherine J. A. Williams, Eva M. Greunz, Steffen Ringgaard, Kasper Hansen, Mads F. Bertelsen, and Tobias Wang Journal of Experimental Biology 2019. 222:None-None; doi: 10.1242/jeb.206714 Download Original Video