Calibration
To measure a distance on a 2D image, the image must be calibrated first.
If you add a measurement to an uncalibrated 2D image, calibration will automatically start when you click Measure 
or Segment 
.
Click a first point and a second point of the reference measurement.
Enter the Reference value of the indicated measurement.
Click Apply.
The calibration measurement is shown on the image and the calibration object 
is added to the 2D measurement group on the Annotation tab of the SmartPanel.
Note
If you calibrate an image that was created with an USB image sensor, you can immediately create measurements on all the images that were acquired with this USB intraoral sensor or PSP device.
Recalibrating an Image
To recalibrate an image:
On the title bar of the DTX Studio Clinic viewer, click 
.
Select Recalibrate image.
Click a first point and a second point of the reference measurement.
Select a recalibration method:
Reference measurement: Enter the reference value of the indicated measurement.
Magnification factor (available for precalibrated images, either by device or DICOM tag info): Enter the magnification factor value.
Click Apply.
Editing a Calibration
Reference Measurement
To edit the value of the calibration measurement, open the Annotation tab 
on the SmartPanel, click 
next to the calibration object and select Edit calibration value. Enter the new Reference value.
To edit the calibration, drag the control points to adjust the position of the calibration object in the viewer. All measurement values are updated accordingly.
To move the label of the calibration measurement, drag it.
Magnification Factor
To edit a previously set magnification factor:
On the title bar of the DTX Studio Clinic viewer, click .
Select Edit magnification factor.