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The main principles of CBCT. CBCT (A) consists of an X-ray source and collector. The X-ray source produces X-rays which penetrate the head and are collected by the collector (B). The collector translates the X-rays into digital signals (C). Those numbers are used to calculate the values of every point of the head by the Lambert-Beer Law and Radon transform (D). Finally, all values are summarized and synthesized into CBCT images (E).
