<FONT face=Verdana>This paper present the process of GPU-based volume rendering algorithm.Aiming at multiorganization for medical imaging calibration problem

we propose a two dimensions table based texture transfer function.For the problems of CPU and GPU <FONT face=Verdana>resource allocation and tasks coordination

we propose a GPU based acting geometry algorithm to generate texture coordinates and cooperating with GPU to finish Volume Rendering.Finally

experiments have been carried out with a large number of medical imaging data and the result indicates that the algorithm proposed in this paper can be a good solution for multiorganization.The algorithm makes the <FONT face=Verdana>calibration and reconstruction speed so efficient that the speed reaches a millisecond-level.The speed fully satisfies the clinical needs.