Overlay. Active Overlay

Concepts

Overlay - a service layer on the image containing textual and numerical data about the study
Active Overlay - the part of the overlay that controls certain program functions, depends on the specialty and presentation mode (2D/3D)

Highlighted in yellow
To select a function, click on the active overlay item with the left mouse button

Displaying an Overlay on the Screen

Toggle the overlay representation on screen by pressing the

key on the keyboard sequentially, or using the buttons in the Toolbar - "Image Processing" Group:

	Show entire overlay	Click to display the entire overlay on the image (default)
	Hide personal data	Click to hide patient and institution data in the overlay
	Show only Active Overlay	Click to hide all data in the overlay except for image control
	Hide all overlay	Click to completely hide all overlay elements

To quickly hide/show all overlay elements, you can use the keyboard shortcut

Active Overlay

Bottom Left Corner in 2D Mode

Click on the required size in the list, enter a numerical value in the field, or click on the arrows next to it
The button applies the size to all images on the screen

Bottom Left Corner in 3D Mode

MPR

Select MPR construction method (Average, MIP, MinIP):

Click on the current MPR construction method (white arrow)
Click on the required construction method in the list

Change Slab Thickness

Move the mouse cursor over the slab thickness slider
Press and hold the left mouse button
Move the slider to the required position
Release the mouse button

You can also enter a specific number in the field to the left of the slider

MPR Projections

Click on the name of the current projection in the active overlay, then, in the appeared list, click on the item with the required projection

3D Model

Select visualization mode (preset):

Click on the current 3D preset
Click on the required preset in the list

For details, see 3D Model

Bottom Right Corner

Common for all modalities

The "More" icon calls up the image preset editing menu
See Image Presets
The "Print Image" button in the "More" menu sends the image to the print sheet

Additional Buttons by Modality

CT

WL selection menu
Click on the required WL in the list

Quickly set the same WL values in different series:

Click the button
The WL value of different series will become the same

See also: Configuring Window/Level

MPR

The "Restore 3D cursor position" item allows setting the 3D cursor to the center of the volume

3D Model

In the bottom right corner - the "More" button

, which calls up the menu:

For details, see 3D Model.