Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

Fabienne L. Herren; Vinzenz Gerber; Raphael MeierDaniela Schweizer-GorgasMicaël D. Klopfenstein Bregger

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Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

机译：Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

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The volumes of equine teeth may change considerably over time for several reasons including domestication, routine dental floating, and the hypsodont and anelodont nature of the teeth. Cone beam computed tomography (CBCT) of the head is routinely performed in standing horses and, in this proof of concept study, the feasibility of measuring tooth volume from CBCT datasets was determined. The CBCT images of 5 equine cadaver cheek teeth were segmented with a software 3-dimensional (3D) Slicer using a predefined protocol, corrected manually, and re-assembled into a 3D model. Individual tooth volume (V_(S)) was calculated from the model. After extraction, the volumes were also measured using the “gold-standard” water displacement method (V_(W)) for comparison. The V_(S)of 77 teeth ranged from 7114 to 42,300 mm~(3)which strongly correlated with V_(W)( r = 0.99)_(,)and on average V_(S)was 6.1% less than V_(W). There was no significant difference in V_(S)between the right and left arcades in individual animals. Maxillary cheek tooth volume was on average 40% larger than it was for mandibular counterparts. Semi-automatic image segmentation of equine cheek teeth from CBCT data is feasible and accurate but requires some manual intervention. This preliminary study provides initial data on the volume of equine cheek teeth and creates new possibilities for future in vivo studies.

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《Journal of Veterinary Dentistry》 |2022年第1期|41-48|共8页
作者
Fabienne L. Herren; Vinzenz Gerber; Raphael MeierDaniela Schweizer-GorgasMicaël D. Klopfenstein Bregger;
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作者单位

Swiss Institute of Equine Medicine (ISME) , Department of Clinical Veterinary Medicine, Vetsuisse-Faculty, University of Bern, and Agroscope Avenches;

University Institute of Diagnostic and Interventional Neuroradiology, University Hospital Inselspital and University of Bern;

Division of Clinical Radiology, Vetsuisse-Faculty, University of Bern;

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正文语种英语
中图分类动物医学（兽医学）;
关键词
volume; segmentation; 3D Slicer; equine; cheek teeth; cone beam computed tomography;

Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

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