DENTAL X-RAY TOMOGRAPHY APPARATUS, DENTAL ARCH MODEL USED THEREFOR, DISTORTION DISPLAY METHOD AND DISTORTION CORRECTION METHOD

摘要

PROBLEM TO BE SOLVED: To allow even an inexperienced person to easily perform synchronization of the speed between an X-ray source and a light receiving part and confirm and correct a position of a subject and to easily determine how to correct them.

SOLUTION: A plurality of dental arches disposed with objects determinable respective imaging distortions are laminatedly constituted in parts corresponding to positions of respective teeth constituting a dentition to provide dental arch models with diversified curvature radii of the plurality of dental arches. Distortion information according to the extents of the picked-up image distortions is displayed on the picked-up image of the dental arch model for every object in each of the plurality of dental arch models, so that the image distortion caused by the synchronization error between the rotating orbital velocity of the X-ray source and the light receiving part (moving speed in a case of a film and scanning period in a case of an image sensor) is visually confirmed and allows the operator to confirm the synchronization error amount, correct it manually and further correct it automatically.

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