An automatic panoramic image reconstruction scheme from dental computed tomography images

作者：Papakosta Thekla K; Savva Antonis D; Economopoulos Theodore L; Matsopoulos George K^*; Grohndal H G

来源：Dentomaxillofacial Radiology, 2017, 46(4): 20160225.

DOI：10.1259/dmfr.20160225

• dental X-ray panoramic images
• Cone beam computed tomography
• image processing
• image reconstruction
• pre-operative and post-operative maxilla assessment

Objectives: Panoramic images of the jaws are extensively used for dental examinations and/or surgical planning because they provide a general overview of the patient's maxillary and mandibular regions. Panoramic images are two-dimensional projections of three-dimensional (3D) objects. Therefore, it should be possible to reconstruct them from 3D radiographic representations of the jaws, produced by CBCT scanning, obviating the need for additional exposure to X-rays, should there be a need of panoramic views. The aim of this article is to present an automated method for reconstructing panoramic dental images from CBCT data.
Methods: The proposed methodology consists of a series of sequential processing stages for detecting a fitting dental arch which is used for projecting the 3D information of the CBCT data to the two-dimensional plane of the panoramic image. The detection is based on a template polynomial which is constructed from a training data set.
Results: A total of 42 CBCT data sets of real clinical pre-operative and post-operative representations from 21 patients were used. Eight data sets were used for training the system and the rest for testing.
Conclusions: The proposed methodology was successfully applied to CBCT data sets, producing corresponding panoramic images, suitable for examining pre-operatively and post-operatively the patients' maxillary and mandibular regions.

• 出版日期2017