利用VTK软件读取三维超声图像，并对其进行显示。-Use VTK software reads the three-dimensional ultrasound image, and displays it.

利用VTK对二维超声纹理图像做旋转变换，从而实现二维坐标到三维空间的映射。-VTK use of two-dimensional ultrasound image texture do rotational transformation in order to achieve the two-dimensional coordinates to map the three-dimensional space.