Importance

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Abstract

The invention relates to an assembly for executing a cone-beam X-ray imaging process. The assembly comprises in the path of X-radiation at least two reference markers (26), which comprise materials whose densities are different from each other. In view of performing a cone-beam X-ray imaging process, the assembly comprises an X-ray source (6) for generating X-radiation and transmitting it to an object (2), a collimator (7) collimator before the object for collimating the X-radiation for a conical or pyramidal beam of rays, a detector (8) capable of receiving X-radiation transmitted through the object for providing X-ray image information, scanner means (16), on the basis of whose movements said X-ray imaging is effected from more than one angle of view, and an image processing unit (12) for utilizing the density information of the reference markers in the processing of X-ray image information.

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First Claim