Method and system for reducing artefacts in dental panoramic images

An x-ray imaging system comprising:

• an x-ray detector configured to convert x-rays to digital electric signals pixel by pixel and to output the electric signal as x-ray frame data,
• a data storage device configured to store the x-ray frame data outputted from the x-ray detector during a panoramic scan of a patient,
• wherein the x-ray imaging system further comprises a data processing system comprising a trained machine learning model configured to receive image data input indicative of patient positioning during the scan of the patient, the image data input being based on one or more images recorded during the panoramic scan,
• the trained machine learning model being configured to generate a positioning parameter set based on the received image data input, where the positioning parameter set is representative of the position of the patient's head during the panoramic scan, and wherein the data processing system is further configured to reconstruct one or more corrected-positioning dental panoramic images based on x-ray frame data recorded during the panoramic scan and on the positioning parameter set.

A computer-implemented method for producing a dental panoramic image, the method comprising the steps:

• receiving one or more images recorded during a panoramic scan of a patient,
• providing an image data input to a trained machine learning model, the image data input being based on the recorded one or more images and the image data input being indicative of patient positioning during the panoramic scan,
• generating a positioning parameter set by the trained machine learning model, the positioning parameter set being based on the received image data input, where the positioning parameter set is representative of the position of a patient's head during a panoramic scan,
• reconstructing one or more corrected-positioning dental panoramic images based on x-ray frame data recorded during the panoramic scan and on the positioning parameter set.