PROBLEM TO BE SOLVED: To provide a dental X-ray CT imaging system which can easily reduce a metal artifact generated due to a prosthetic appliance and the like in a dental X-ray CT apparatus.SOLUTION: A dental X-ray imaging apparatus comprises: a process of acquiring 3D data of the face of a subject at the time of imaging start of the first CT scan execution with X-ray or during imaging to execute the first CT scan with X-ray an X-ray incident angle changing process of providing X-ray incident angle changing means capable of relatively changing the angle of an arm rotation plane with respect to the subject to perform X-ray CT imaging with an angle different from the first CT scan with X-ray a process of acquiring 3D data of the face of the subject at the time of imaging start of the second CT scan execution with X-ray or during imaging to execute the second CT scan with X-ray and a process of calculating the incident angle difference of the X-rays from the first and second 3D data of the face to perform CT reconstruction calculation on the basis of both pieces of data of the first and second X-ray CT scan data.COPYRIGHT: (C)2016,JPO&INPIT
