Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Metzler, P; Bruegger, LS; Kruse Gujer, AL; Matthews, F; Zemann, W; Graetz, KW; Luebbers, HT.
Craniofacial landmarks in young children: how reliable are measurements based on 3-dimensional imaging?
J Craniofac Surg. 2012; 23(6):1790-1795
Doi: 10.1097/SCS.0b013e318270fa8f
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- Co-Autor*innen der Med Uni Graz
- Zemann Wolfgang
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- Abstract:
- Introduction: Different approaches for 3-dimensional (3D) data acquisition of the facial surface are common nowadays. Meticulous evaluation has proven their level of precision and accuracy. However, the question remains as to which level of craniofacial landmarks, especially in young children, are reliable if identified in 3D images. Potential sources of error, aside from the systems technology itself, need to be identified and addressed. Reliable and unreliable landmarks have to be identified. Materials and Methods: The 3dMDface System was used in a clinical setting to evaluate the intraobserver repeatability of 27 craniofacial landmarks in 7 young children between 6 and 18 months of age with a total of 1134 measurements. Results: The handling of the system was mostly unproblematic. The mean 3D repeatability error was 0.82 mm, with a range of 0.26 mm to 2.40 mm, depending on the landmark. Single landmarks that have been shown to be relatively imprecise in 3D analysis could still provide highly accurate data if only 1 of the 3 spatial planes was relevant. There were no statistical differences from 1 patient to another. Conclusions: Reliability in craniofacial measurements can be achieved by such 3D soft-tissue imaging techniques as the 3dMDface System, but one must always be aware that the degree of precision is strictly dependent on the landmark and axis in question. For further clinical investigations, the degree of reliability for each landmark evaluated must be addressed and taken into account.
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