A tomographic test object.
Testing of the tomographic and photographic system is a prerequisite for successful reproduction of minor details particularly in tomography of the temporal bone. A test phantom has been developed, consisting of a single layer of small metal balls which can be adjusted to varying inclinations to the tomographic plane. It involves a simple procedure for examining the homogeneity and stability of the tomographic layer at wide movement angles and may also be used for calculating the layer thickness.
D011856:Radiographic Image Enhancement; D014056:Tomography, X-Ray / Q000295:instrumentation*