A Motion Compensation Approach for Dental Cone-beam Region-of-interest Imaging

Tao Sun, Johan Nuyts, Roger Fulton


Published in:Fully3D 2017 Proceedings


Cone-beam computed tomography (CT), dental imaging, motion estimation, motion compensation
Motion of the patient affects image quality in dental cone-beam imaging. While efforts are always made to minimize motion during the scan, relatively little attention has been given to methods of compensating for the motion during the reconstruction of the image. In a previous study, we proposed an approach to iteratively estimate and compensate for rigid head motion within the reconstruction process for helical CT. This study reports on an extension of this method to mitigate the effect of the limited field-of-view (FOV) in the dental scan. The new method was evaluated with simulations. The quality of the reconstructed images was improved substantially after motion compensation. The proposed method eliminated most of the motion-induced artifacts in dental region-of-interest (ROI) imaging. 

Tao Sun
KU Leuven
Johan Nuyts
KU Leuven
Roger Fulton
University of Sydney
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