Comparison of in vivo 3D cone-beam computed tomography tooth volume measurement protocols

被引：27
作者：
Forst D. [1 ]
Nijjar S. [1 ]
Flores-Mir C. [1 ]
Carey J. [1 ]
Secanell M. [1 ]
Lagravere M. [1 ]
机构：
[1] Department of Dentistry, University of Alberta, Edmonton Clinic Health Academy, 5th Floor, 11405 - 87 Avenue NW, Alberta
来源：
Progress in Orthodontics | / 15卷 / 1期
关键词：
Cone-beam computed tomography; Tooth; Imaging; Three-dimensional;
D O I：
10.1186/s40510-014-0069-2
中图分类号：
学科分类号：
摘要：
BACKGROUND: The objective of this study is to analyze a set of previously developed and proposed image segmentation protocols for precision in both intra- and inter-rater reliability for in vivo tooth volume measurements using cone-beam computed tomography (CBCT) images.; METHODS: Six 3D volume segmentation procedures were proposed and tested for intra- and inter-rater reliability to quantify maxillary first molar volumes. Ten randomly selected maxillary first molars were measured in vivo in random order three times with 10 days separation between measurements. Intra- and inter-rater agreement for all segmentation procedures was attained using intra-class correlation coefficient (ICC).; RESULTS: The highest precision was for automated thresholding with manual refinements.; CONCLUSIONS: A tooth volume measurement protocol for CBCT images employing automated segmentation with manual human refinement on a 2D slice-by-slice basis in all three planes of space possessed excellent intra- and inter-rater reliability. Three-dimensional volume measurements of the entire tooth structure are more precise than 3D volume measurements of only the dental roots apical to the cemento-enamel junction (CEJ).
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