A deformable region model for locating the boundary of brain tumor

We propose a new deformable region model to represent a brain tumor in MRI, and use a shrinking-growing method to locate its boundary from a designated initial plan. The shrinking-growing process maximizes the area of an object under the condition that the object and its boundary have the same gray level distributions. Compared to the deformable contour models (also called active contour model, or snake), our method dose not require the initial plan to be in as close proximity to the boundary as in contour models