With the measure tool you can measure distances within the image. The measure tool
will display distance in millimeters if pixelsize is specified in the DICOM header. If not, or multiple pixelsizes
are found in the DICOM header, you have to use the calibrate tool
to convert image pixels to millimeters.
Zoom the image and maximize the window to be able to measure more accurately. Press 'Escape' to cancel
your current measurement.
Measurements can be modified by moving the mouse pointer over either end of the measurement. It
will change the color to red and a red square will be displayed. Drag this square to modify the measurement.
Delete a measurement by double clicking the red square. All measurements can be deleted at once by
pressing the 'Delete all measurements' button in the toolbar. This will delete all angle measurements as well. Go
to 'Tools' and 'Delete measurem.' in the menu, to delete the length measurements only.
To start a new measurement from either end of an old one, move the mouse pointer over the end of the old measurement.
This old one will change to red and the square will appear, disabling you to start a new measurement. Now simple
press 'Escape' to remove the box and red color to enable starting a new measurement from this position.
The measurement is linked to and displayed on the image it's created on. To display a measurement on all images of a scene,
highlight it and press 'c' on your keyboard. This measurement will now be displayed on all images.
Do the same to undo.
Measurements are not displayed when a scene is running.
Length of screw showing 60.01 millimeters, measure tool assigned to right mouse button