Fig. 1

Images of end diastole (ED) and end systole (ES) from a first pass radionuclide angiography. Images were obtained in the 30° RAO position, and computer contouring of the right ventricle was manually performed (yellow dashed line). Attention to including the right ventricular outlow tract to the pulmonary valve (red arrow) and base of the right ventricle to the right atrium (blue arrow) was performed