The creation of a Normal Database requires the availability of a number of control images. These images must beforehand be saved in a PMOD database, where they are in DICOM format and include information such as the age or sex of the controls, and the anatomical image orientation.
Note: Controls can always be added to an existing database to extend the statistical power of the analysis. To this end, the new control images are normalized and scaled using the same approach as when building the database initially, followed by a new calculation of the pixel distribution of the extended control set.