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An automatic panoramic image reconstruction scheme from dental computed tomography images

Artikel i vetenskaplig tidskrift
Författare T. K. Papakosta
A. D. Savva
T. L. Economopoulos
G. K. Matsopoulos
H. G. Gröhndal
Publicerad i Dentomaxillofacial Radiology
Volym 46
Nummer/häfte 4
ISSN 0250-832X
Publiceringsår 2017
Publicerad vid Institutionen för odontologi
Språk English
Länkar doi.org/10.1259/dmfr.20160225
Ämnesord dental X-ray panoramic images, Cone beam computed tomography, image processing, image reconstruction, pre-operative and post-operative maxilla assessment, Dentistry, Oral Surgery & Medicine, Radiology, Nuclear Medicine &, Medical Imaging
Ämneskategorier Odontologi

Sammanfattning

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.

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