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Image Representation in CT

2D Images

2D images include topograms, patient protocol reports, user-saved two-dimensional screenshots of three-dimensional images, etc., which cannot be represented as MPR and/or volume
This also includes scans that technically cannot be combined into a single volume (for example, scans from different series incorrectly merged by the console operator into one)
In this case, the series header does not contain buttons for switching image viewing modes:

3D Images

3D images are sets of scans combined by the software into volumes
They can be represented as MPR and/or a 3D model
In this case, buttons for switching image views will appear in the series header:
This representation is preferred

3D Dynamic Series

Buttons for switching volumes are located in the series header:
Click the side arrows to switch volumes, or click the central part and select a volume from the list
To scroll through images and volumes with the mouse, select the scrolling tool in the tool panel
Hold down the left mouse button and move the mouse

Representing 3D Images in 2D Mode

If it is necessary to represent a volume as individual scans, click the "2D" button in the series header
In this case, all scans will be displayed in the projection in which they were acquired by the console operator

Returning from 2D Mode to 3D Mode

If the series header in 2D mode contains the button , click it to switch to the volume

Image Presentation in Case of a Single Study with Different Gantry Tilt Angles

Note:

Per user requests, we have added the current scan number and the total number of scans in the series to the on-screen overlay
If you updated from an older version of the software:
See also
Vidar Dicom Viewer Help 3.0, © 2026 PO Vidar