X-ray imaging device

A two-dimensional tomographic imaging device comprising:

• an X-ray source and an X-ray sensor facing each other with an object therebetween;
• a driver configured to perform radiography by rotating the X-ray source and the X-ray sensor about a rotating axis disposed therebetween;
• and
• an image processor configured to provide a first tomographic image of a front image layer within the object between the rotating axis and the X-ray sensor, and to provide a second tomographic image of a rear image layer within the object between the rotating axis and the X-ray source, by using results of unit cycle radiography of the driver.

A two-dimensional tomographic imaging device comprising:

• an X-ray sensor configured to move along a trajectory of a mandibular arch of an examinee in front of the mandibular arch;
• an X-ray source configured to move to face the X-ray sensor based on a rotating axis between the trajectory of the mandibular arch and a temporo mandibular joint (TMJ);
• and
• an image processor configured to provide a tomographic image of an image layer between the rotating axis and the X-ray source, by shifting and overlapping a detection result of the X-ray sensor after reversing left and right at least some of the detection result.