First, a general range shall be sketched out with the mouse, then click the function button on the menu, and the program will automatically separate the skull, the hypoderm and the ventricles.

• 首先用鼠标勾画出大致范围，然后点击菜单项上的功能按钮，程序将自动去除颅骨、皮下组织和脑室。