caa a22 4500 445347740 CHVBK 20180317142834.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00056-011-0032-5 doi (NATIONALLICENCE)springer-10.1007/s00056-011-0032-5 Accuracy of anatomical landmark identification using different CBCT- and MSCT-based 3D images [Elektronische Daten] An in vitro study [J. Medelnik, K. Hertrich, S. Steinhäuser-Andresen, U. Hirschfelder, E. Hofmann] DVT- und MSCT-gestützter Vergleich der Reproduzierbarkeit anatomischer Messpunkte Eine In-vitro-Studie Objective: The aim of this study was to evaluate the reproducibility of anatomical landmarks and the accuracy of different cone-beam CTs (CBCTs/DVTs) and a multislice spiral CT (MSCT) scanner. Methods: A human, fresh-frozen cadaver head was scanned with four CBCTs (Accuitomo3D, 3DeXam, Pax Reve3D, Pax Zenith3D) and one MSCT (SOMATOM Sensation64) scanner. The three-dimensional (3D) reconstruction of the volume data sets and location of the anthropometric landmarks (n=11), together with linear (n=5) and angular (n=1) measurements were carried out by three examiners using the program VoXim® 6.1. The measurements were taken twice at a 14-day interval. Descriptive analyses were made and the standard deviations were used to compare differences in the accuracy of landmark identification. Results: The descriptive statistics showed distinct differences in the reference points in the three axes of the coordinate system. Because of anatomical and morphological factors, the pogonion and gnathion reference points displayed higher standard deviations when set on the transverse plane (SDCBCT Pog: 0.66-1.57mm; SDMSCT Pog: 0.14-1.09mm; SDCBCT Gn: 1.05-1.77mm; SDMSCT Gn: 0.20-0.85mm), thus showing less accuracy. However, standard deviations on the sagittal and vertical planes were smaller. Genion, anterior nasal spine and infradentale had very low standard deviations on all three planes. The distance (Mfl-Mfr) and angle (Krl-Krr-Ge) revealed significantly smaller standard deviations in the MSCT (SDCBCT Krl-Krr-Ge: 0.51-0.75mm; SDMSCT Krl-Krr-Ge: 0.22mm). Conclusion: The CBCT devices evaluated in this study are suitable for taking exact 3D measurements of anatomical structures and meet all requirements for 3D cephalometric analysis. Urban &amp; Vogel, Muenchen, 2011 Multislice computed tomography (MSCT) nationallicence Cone-beam computed tomography (CBCT) nationallicence Landmark identification nationallicence Human cadaver head nationallicence Mehrschicht-Spiral-Computertomographie (MSCT) nationallicence Dentale Volumentomographie (DVT) nationallicence Messpunktidentifikation nationallicence Humaner Leichenkopf nationallicence Medelnik J. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut Hertrich K. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut Steinhäuser-Andresen S. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut Hirschfelder U. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut Hofmann E. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie Springer-Verlag 72/4(2011-08-01), 261-278 1434-5293 72:4<261 2011 72 56 https://doi.org/10.1007/s00056-011-0032-5 text/html Onlinezugriff via DOI 1 article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00056-011-0032-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Medelnik J. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut NATIONALLICENCE 700 1- Hertrich K. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut NATIONALLICENCE 700 1- Steinhäuser-Andresen S. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut NATIONALLICENCE 700 1- Hirschfelder U. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut NATIONALLICENCE 700 1- Hofmann E. Department of Orthodontics, Zahnklinik 3 - Kieferorthopädie, Universitätsklinikum Erlangen, Glückstr. 11, 91054, Erlangen, Germany aut NATIONALLICENCE 773 0- Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie Springer-Verlag 72/4(2011-08-01), 261-278 1434-5293 72:4<261 2011 72 56 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer