Window Level

In mammography studies, the viewport background retains its color when the Window Level is changed. For more information, see Air gap suppression .

	Window Level Change the Window Level for the selected image.
	Reset Window Level Reset the images to their original Window Level settings.
	Window Level Presets Select a predefined Window Level. Window Level presets are configurable by the system administrator.
	Window Level Scope This feature must be enabled by the system administrator. Change Window Level to apply to the study, the series stack, or only the image. By default, Window Level operations apply to the series stack.

Manually change the Window Level

The Window Level operation can be mapped to middle-mouse button or right-mouse button by the system administrator.

1. Click to turn on the Window Level tool.
2. Click and hold the left mouse button in the viewport.
   • Drag the cursor up and down to adjust Window Level.
   • Drag the cursor left and right to adjust Window Width.
     
     To get fine Window Level control, press and hold the CTRL key while you drag. The Window Level will be adjusted in smaller increments.
3. To reset the Window Level to its initial presentation, click

Apply a Window Level preset

The Window Level Presets dropdown provides access to site-level, modality-specific Window Level presets. The Window Level Presets button is shown only if there are presets available for the study being displayed. If a study contains multiple-modalities, the dropdown will be populated with the presets matching the modality of the selected series. If the selected series has no presets, the icon is disabled.

Note that additional presets can be defined by the system administrator.

1. Click and select a preset.

Change the Window Level Scope

Note: This feature must be enabled by the system administrator.

By default, Window Level operations apply to all of the images in a series. To instead apply Window Level changes at the study or image level, do the following: 

1. Click and select any of the following options: 
   • W/L Image Scope
   • W/L Series Scope
   • W/L Study Scope

When the Window Level scope is changed, the icon on the toolbar changes to reflect the current selection:

	Window Level Image Scope
	Window Level Series Scope
	Window Level Study Scope