The simulation uses the porcine ventricular structure digitized at the University of Auckland Bioengineering Institute.

References:
Stevens C, Remme E, LeGrice I, Hunter PJ. Ventricular mechanics in diastole: material parameter sensitivity. J Biomechanics 2003; 36: 737-748.
Fenton FH, Cherry EM, Gray RA, Hastings HM, Evans SJ. Fibrillation without alternans in porcine ventricles. Heart Rhythm 2005; 2 (Supplement): S301-S302.
One second of simulation takes 5 hours on a 96-processor Beowulf (3GHz-Xeon processors) using a spatial resolution of 0.025 cm.