Heart left ventricle segmentation in medical images is of prior importance for heart diseases analysis. Ultrasounds provide a non-invasive, cheep and real-time 3D images aquisition system. We developped a 4D deformable discrete heart model based on simplex meshes to extract heart shape from time series of 3D ulstrasound images. Preliminary results are available here (mpeg format):

• the original data (one slice time evolution, each image is 3D)
• The model inside the 4D image (3D view at time 0)
• 4D model deformation (3D views a 3 instants)
• 4D model deformation (3D view at time 0)
• Model trace evolution inside one image slice
• Resulting 4D beating ventricle
• Resulting beating ventricle trace in image