the Pro Dent CT phantom is an innovative system for quality control of dental tomography systems and other X-ray devices with 3D function. It was developed in cooperation with leading producers of dental tomography units.WIth Pro-Dent CT you can do the following tests;image geometrypixel (matrix) sizeartefacts, noisehomogeneitylinearitycontrasthigh-contrast resolutionlow-contrast resolution (contrast sensitivity)