Changing the intensity scale is useful when examining different image features. In clinical medicine, the intensity scale is often changed to examine bone (high value) versus soft-tissue (medium value) features.
Set
This command displays a dialog box that sets the lower
and upper values to display.
Auto
This command displays a dialog box that allows CTSim to automatically
make an intensity scale. The parameters that CTSim needs to make this
automatic scale are:
| Center | This sets the center of the intensity scale. Currently, CTSim allows you to use either the mean, mode, or median of the image as the center of the intensity scale. |
| Width | This sets the half-width of the intensity scale. The half-width is specified as a multiple of the standard deviation. |
As an example, if median is selected as the center and 0.5 is selected as the width, the the minimum value will be median - 0.5 x standardDeviation and the maximum value will be median + 0.5 x standardDeviation.
Full
This command resets the intensity scale to the full scale of the image.