Volumetric difference evaluation of registered three-dimensional pre-operative and post-operative CT dental data

dc.contributor.author	Οικονομόπουλος, Θεόδωρος Λ.	el
dc.contributor.author	Ασβεστάς, Παντελής Α.	el
dc.contributor.author	Ματσόπουλος, Γεώργιος Κ.	el
dc.contributor.author	Molnar, Balint	en
dc.contributor.author	Windisch, Peter	en
dc.date.accessioned	2015-02-09T11:56:47Z
dc.date.issued	2015-02-09
dc.identifier.uri	http://hdl.handle.net/11400/5923
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	Digital subtraction radiography
dc.subject	Volumetric computed tomography
dc.subject	Ψηφιακή αφαιρετική ακτινογραφία
dc.subject	Ογκομετρική υπολογιστική τομογραφία
dc.title	Volumetric difference evaluation of registered three-dimensional pre-operative and post-operative CT dental data	en
heal.type	journalArticle
heal.generalDescription	Technical note	en
heal.classification	Medicine
heal.classification	Biomedical engineering
heal.classification	Ιατρική
heal.classification	Βιοϊατρική τεχνολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85014237
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Βιοϊατρική τεχνολογία
heal.identifier.secondary	doi: 10.1259/dmfr/94040044
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2012
heal.bibliographicCitation	Economopoulos, T., Asvestas, P., Matsopoulos, G., Molnár, B. and Windisch, P. (2012). Volumetric difference evaluation of registered three-dimensional pre-operative and post-operative CT dental data. Dentomaxillofacial Radiology. 41(4). pp. 328-339. The British Institute of Radiology: 2012.	en
heal.abstract	Objective: The purpose of this study is to propose a complete methodology for automatically registering three-dimensional (3D) pre-operative and post-operative CT scan dental volumes as well as to provide a toolset for quantifying and evaluating their volumetric differences. Methods: The proposed methodology was applied to cone beam CT (CBCT) data from 20 patients in order to assess the volume of augmented bone in the alveolar region. In each case, the pre-operative and post-operative data were registered using a 3D affine-based scheme. The performance of the 3D registration algorithm was evaluated by measuring the average distance between the edges of the registered sets. The differences between the registered sets were assessed through 3D subtraction radiography. The volume of the differences was finally evaluated by defining regions of interest in each slice of the subtracted 3D data and by combining all respective slices to model the desired volume of interest. The effectiveness of the algorithm was verified by applying it to several reference standard-shaped objects with known volumes. Results: Satisfactory alignment was achieved as a low average offset of 1.483¡1.558mm was recorded between the edges of the registered sets. Moreover, the estimated volumes closely matched the volumes of the reference objects used for verification, as the recorded volume differences were less than 0.4 mm3 in all cases. Conclusion: The proposed method allows for automatic registration of 3D CBCT data sets and the volumetric assessment of their differences in particular areas of interest. The proposed approach provides accurate volumetric measurements in three dimensions, requiring minimal user interaction.	en
heal.publisher	The British Institute of Radiology	en
heal.journalName	Dentomaxillofacial Radiology	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true