Disclosed herein is a combined panoramic and computed tomography
photographing apparatus. The apparatus includes, an X-ray source part, an
X-ray sensor part having a panoramic sensor and/or a CT sensor, a rotary
arm for arranging the X-ray source part and the X-ray sensor part thereon
in such a way as to be opposed to each other, a rotary arm supporting
member, and rotary arm driving means, wherein the panoramic sensor and
the CT sensor are dedicated sensors respectively for panoramic
photographing and CT photographing. The apparatus can obtain a CT image
and a panoramic image by one photographing apparatus, and allow a user to
previously set the optimum enlargement ratio according to panoramic
photographing or CT photographing.