contrast and brightness

[Brian C. Schweinsburg]

Hi Folks,   When I convert and load images (from gelx, analyze, or brik format), the contrast and brightness are way off. In some cases the entire brain looks bright white. This creates a problem for segmentation edits because when I adjust the contrast for the auxiliary image (mri/orig) the main volume (segmentation) is adjusted, and actually disappears. What could be causing my images to be loaded with poor contrast/brightness? Is it a scaling problem? Is there a way to automatically adjust for this, say, using an environment variable?   thanks for any help.   brian     ************************ Brian C. Schweinsburg UCSD Phone: 858.642.3736 Fax: 858.552.7432