Figure 1

Semi-automatic tracing of the right ventricle without and with manual correction. Semi-automatic tracing of the right ventricle in end-diastole with the RV function analysis program showing the endocardial contour detection without (left image) and with (right image) manual correction. In both images: Upper right image is the 4 chamber view; lower right image is the coronal view with the apex downwards, the tricuspid valve to the upper left and the pulmonary valve to the upper right in the image; the three left images are the short-axis views in three different levels; whereas the upper image here is closer to the base and the lower image closer to the apex. The levels of short-axis are changeable and the semi-automatic endocardial rendering is manually corrected in all images and in multiple levels. The uncorrected semi-automatic delineation is less pliable in the anterior and basal part of the RV.