Illustration 14: Opacity Values: Left = 100%; Middle = 50%; Right = 25%
Opacity Values constant: (100); Threshold values are changed.
Illustration 15: Threshold Values from left to right: (-200 Low Threshold); (-100 Low Threshold);
(0 Low Threshold); (50 Low Threshold); (100 Low Threshold)
5.2 Surface rendering
Surface Rendering is similar to Volume Rendering except that it first separates the Volume of
Interest (VOI) from the original data set and then it creates the rendered image.
Illustration 16: Surface Rendering
5.3 Render modes
The Render modes consist of Volume Rendering, HD MIP, MIP, Min IP, Ray Sum, and Integral.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
468 5 Volume Render