The proposed method provides interactive frame-rates on high-end PCs and still several frames per second on standard desktop hardware, and is well-suited to depict small details within the data which may be missed or deformed using other fast, but less accurate methods. Compared to high-quality MIP based on ray casting, the method avoids trilinear interpolations in a significantly more efficient way and achieves 20 times better performance, while providing better quality than other (shear/warp or hardware-based) approaches.