Oral cone beam X-ray imaging system and fast positioning method therefor

An oral cone-beam X-ray imaging system, wherein working modes of the oral cone-beam X-ray imaging system include an oral CT imaging mode, an oral panoramic imaging mode, and a cranial lateral imaging mode, the oral cone-beam X-ray imaging system comprising:

• an X-ray source, configured to emit cone-beam X-rays towards an object being measured;
• a flat-panel detector, configured to detect the X-rays passing through the object being measured;
• a rotation drive device, configured to rotate the X-ray source and the flat-panel detector, or to control the rotation device to rotate the object being measured;
• a data processing device, configured to receive a working mode instruction to select a set of working mode control parameters corresponding to one of the oral CT imaging mode, the oral panoramic imaging mode, and the cranial lateral imaging mode;
• and
• a control device, configured to receive the set of working mode control parameter set, control the rotation drive device, and control the X-ray source and the flat-panel detector to perform imaging, wherein a quantity of the X-ray source, the flat-panel detector, and the rotation drive device is one, forming a single-channel imaging system,
• wherein the working modes further include a quick positioning mode, and the data processing device is configured to select the quick positioning mode based on receiving another one working mode instruction, in the quick positioning mode, an imaging trajectory of the oral CT imaging mode is adopted, and a radiation dose of the X-rays in the quick positioning mode is lower than that of the X-rays in oral CT imaging mode, so as to perform adaptive positioning of the imaging system based on positioning results of the quick positioning mode.