VOI LUTs

When a value of interest (VOI) look-up table (LUT) is present in the image object, the viewer will apply it in place of the window and level setting. When present, the VOI LUT is included in the list of available presets, identified by the VOI LUT label preceded by a pound character (#). When a VOI LUT is applied, the linear window and level toolbar features are disabled. The viewer denotes this by displaying Using VOI LUT setting in their place.

When you use the mouse to change the setting, the viewer deactivates the LUT, applies the best W/L setting it can, and enables the window and level fields on the W/L toolbar.

To disable the automatic application of a VOI LUT, disable the Apply VOI LUT setting for the modality type. This function is located in the Settings panel under Images/Window and Level.

See: Window and Level