Xdicom

Supported visual classes: DirectColor is no implemented yet. Depths: 8,16,24 and 32. No support for 1 bit depth.

Values of Intrest

Xdicom can do realtime, mouse-driven windowing and centering. If your visual is GrayScale or PseudoColor, windowing is best done with manipulation the colormap. If you're on the console of a workstation, this can be turned of. If windowing isn't realtime on a Xterminal, try to select a PseudoColor or GrayScale visual, so that windowing can be done on the colormap.