Fig. 4.

3-D US image through the anterior fontanelle of a patient with bilateral grade II IVH. (a) The segmented region within the 3-D US image, (b) the ventricle model generated from the segmented boundaries in (a), and (c) a 3-D US ventricle model generated from two 3-D US images of a patient with PHVD following a bilateral grade III IVH. The segmented surfaces from the right and left ventricles were aligned beside each other postsegmentation to enhance visualization and to ease comparison with the lesser dilated ventricles. VV was measured to be (b) $20.2{\mathrm{cm}}^3$ and (c) $45.7{\mathrm{cm}}^3$.