| 摘要 |
The present invention relates to an X-ray photographing apparatus for obtaining an X-ray image of teeth or a jawbone, comprising a tubular X-ray generating unit that can be placed in the oral cavity of a patient; and an X-ray detection unit which is arranged outside the oral cavity such that the position of the X-ray detection unit corresponds to the position of X-ray generating unit and is movable along the face of the patient, or has a curved shape similar to the shape of the face of the patient. According to the thus-configured apparatus of the present invention, the X-ray generating unit is arranged in the oral cavity, and a mobile sensor or a large area sensor is arranged outside the oral cavity to obtain an X-ray image, thereby obtaining the X-ray image of large area teeth with minimized X-ray exposure to the patient. The apparatus of the present invention improves safety and convenience of patients by preventing excessive X-ray exposure and reducing intraoral irritation, which otherwise might occur in conventional panoramic X-ray generating apparatuses or oral sensor type X-ray generating apparatuses. The apparatus of the present invention obtains a clear image of large area, which aids dentists with accurate decision-making while minimizing the number of times of photographing operations. |
