The Spine Label tool is used to label vertebrae on spine images. It supports all 29 vertebral levels: C1–C7, T1–T12, L1–L5, and S1–S5. Labels are placed sequentially with each click, making it quick to annotate an entire spine series.


Using the Spine Label Tool


1.Select the Spine Label tool from the toolbar or the Measure and annotate menu, or press S on the keyboard.



2.A dialog box appears where you select the starting vertebra and the labeling direction — ascending or descending. Click OK to confirm.

3.Click on the image to place the first label. Continue clicking to place each subsequent label. The vertebral level advances automatically with each click.

4.Double-click or right-click to finish labeling.


To reposition a label, click and drag it to the desired location. To delete a label, right-click on it and select Delete, or press the Delete key on the keyboard.


To change the fill color, thickness, opacity, and other properties, right-click on the object and select Properties, or double-click on it.


Keyboard Shortcuts


Press S to activate the Spine Label tool.

Press Esc to stop labeling and exit the tool.