Title
A new method for improved standardisation in three-dimensional computed tomography cephalometry A new method for improved standardisation in three-dimensional computed tomography cephalometry
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
,
Subject
Biology
Human medicine
Engineering sciences. Technology
Computer. Automation
Source (journal)
Computer methods in biomechanics and biomedical engineering. - Place of publication unknown
Volume/pages
13(2010) :1 , p. 59-69
ISSN
1025-5842
ISI
000274221500006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Interest for three-dimensional computed tomography cephalometry has risen over the last two decades. Current methods commonly rely on the examiner to manually point-pick the landmarks and/or orientate the skull. In this study, a new approach is presented, in which landmarks are calculated after selection of the landmark region on a triangular model and in which the skull is automatically orientated in a standardised way. Two examiners each performed five analyses on three skull models. Landmark reproducibility was tested by calculating the standard deviation for each observer and the difference between the mean values of both observers. The variation can be limited to 0.1 mm for most landmarks. However, some landmarks perform less well and require further investigation. With the proposed reference system, a symmetrical orientation of the skulls is obtained. The presented methods contribute to standardisation in cephalometry and could therefore allow improved comparison of patient data.
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