Right ventricular injection study in a dog with pulmonic stenosis, ventricular septal defect, and non-compacted myocardium. Note the supravalvular (Sup), valvular (V) and subvalvular (Sub) pulmonic stenosis. Enlarged pulmonary artery branches indicate increased flow from left-to-right shunting through the ventricular septal defect (not visible).

Continued right ventricular injection study in a dog with pulmonic stenosis, ventricular septal defect, and non-compacted myocardium. Note the outward extension of contrast material into the wall of the non- compacted (NC) right ventricle (RV).

Continued right ventricular injection study in a dog with pulmonic stenosis, ventricular septal defect, and non-compacted myocardium. Note sustained opacification of the right ventricle due to left-to-right shunting of contrast material through the ventricular septal defect (arrow).