Volume rendering 3D imaging is a new technique for visualizing 3D arrays of sampled data. It has wide applications in areas such as medical imaging and scientific visualization. But due to vast computing quantity of volumetric data sets

its application has been limited by its high computational expense. At present

many researchers are working hard to the foundation of accelerating algorithms. In order to resolve the rendering speed and imaging quality problem in 3D Visualization of medical image

this paper present a interactive dynamic volume rendering algorithm

which is a rendering method from arbitrary viewing point distance and by arbitrary viewing ray direction

and then

basing on analyzing its algorithm complicacy

proposes a accelerating algorithm. It apply the six features of 3D nonuniform transformation

and use the simple beeline marching and parallelogram marching instead of time consuming matrix multiplication. This makes the volume rendering reach to almost real time efficiency. This method is four to five times faster than the standard one.