215989.fig.004a
(a)
215989.fig.004b
(b)
Figure 4: (a) Sagittal T1-weighted image showing the reference plane intersecting the anterior horn and the body of the lateral ventricles. (b) Segmentation of the lateral ventricles on the corresponding 2D FLAIR slice using the level set algorithm then thresholding to draw a region of interest and extract the lateral ventricles area.