Model of a twelve year old subject. Generated using Fast3D and echocardiography. The subject has normal anatomy. Panel A shows a graphical rendering of the finished model in the standard echocardiographic parasternal long axis view. Panel B shows a graphical rendering of the finished model in the standard echocardiographic parasternal short axis view. Panels C and D show photographs of these models fabricated with a MakerBot Replicator 2X.