کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3168335 | 1199406 | 2009 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Observer reliability of three-dimensional cephalometric landmark identification on cone-beam computerized tomography Observer reliability of three-dimensional cephalometric landmark identification on cone-beam computerized tomography](/preview/png/3168335.png)
ObjectiveTo evaluate reliability in 3-dimensional (3D) landmark identification using cone-beam computerized tomography (CBCT).Study designTwelve presurgery CBCTs were randomly selected from 159 orthognathic surgery patients. Three observers independently repeated 3 times the identification of 30 landmarks in the sagittal, coronal, and axial slices. A mixed-effects analysis of variance model estimated the intraclass correlations (ICC) and assessed systematic bias.ResultsThe ICC was >0.9 for 86% of intraobserver assessments and 66% of interobserver assessments. Only 1% of intraobserver and 3% of interobserver coefficients were <0.45. The systematic difference among observers was greater in X and Z than in Y dimensions, but the maximum mean difference was quite small.ConclusionOverall, the intra- and interobserver reliability was excellent. Three-dimensional landmark identification using CBCT can offer consistent and reproducible data if a protocol for operator training and calibration is followed. This is particularly important for landmarks not easily specified in all 3 planes of space.
Journal: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology - Volume 107, Issue 2, February 2009, Pages 256–265