GE Revolution CT User Manual page 473

Table 15: ROI selections
Function Name
Ramp
Enhance Contours
Transparency
Zoom
Histogram
Vertical Red Line
Chapter 16 Reformat
Illustration 20: VR Controls screen
Description
Defines the opacity curve shape.
• Step: surface type rendering displaying structures with high voxel values.
• Ramp-up: displays structures with high values typically vessels and bone.
• Ramp-down: displays structure with low values typically airways.
• Plateau: displays structures within a given range.
• Valley: use with cut plane to create endo-luminal view.
Attach mode: used to apply multiple plateau ramps attaching colors to ranges of voxel values.
•
Enhances boundaries of structures. This is useful to display vessels or orthopedic cases.
Makes internal objects transparent and makes objects boundaries more visible.
Zoom in or out to modify the range of voxel values displayed.
Displays the voxel distribution (number of voxels per voxel value) in the image. Peaks correspond to
voxel values that are highly represented in the image.
Represents the numerical value of the voxel at the location of the 3D cursor. Moving the 3D cursor on
the image will change the location of the red line.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
473