Reliability of upper airway assessment using CBCT
| Autor: | Jason N Zimmerman, Siddharth R. Vora, Benjamin T. Pliska |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Radiography Airway structure Oropharynx Orthodontics 03 medical and health sciences 0302 clinical medicine Medical imaging Image Processing Computer-Assisted Radiography Dental Medicine Humans 030212 general & internal medicine Reliability (statistics) Observer Variation Oropharyngeal disorders business.industry Reproducibility of Results 030206 dentistry respiratory system Cone-Beam Computed Tomography Cbct imaging Volume measurements Pharynx Female Clinical Competence business Airway Nuclear medicine |
| Zdroj: | European journal of orthodontics. 41(1) |
| ISSN: | 1460-2210 |
| Popis: | Background Upper airway analysis is an often-cited use of CBCT imaging by orthodontists; however, the reliability of airway measurements using this technology is not fully established. Objective To determine the intra-examiner and inter-examiner reliability of the complete process of volumetric and cross-sectional area assessments of the upper airway using CBCT imaging. Materials and methods Six examiners of varying levels of education and clinical experience performed the steps necessary for airway analysis, including manual orientation, slice and threshold selection and measured nasopharyngeal, oropharyngeal, hypopharyngeal and total upper pharyngeal airway volumes in addition to minimum cross-sectional area on the CBCT images of 10 patients. All measurements were repeated after 4-weeks. Intra- and inter-examiner reliability was calculated using ICC and 95% CI. Results Threshold selection showed poor intra- and poor inter-examiner reliability, whereas minimum cross-sectional area showed moderate intra- and poor inter-examiner reliability. Intra-examiner reliability of volumetric measurements varied based on the region assessed with ICC ranging from 0.747 to 0.976, and was worst for hypopharynx and best for the oropharynx. Inter-examiner reliability of volume measurements was generally lower, with ICC ranging from 0.175 to 0.945, and was worst for nasopharynx and best for the oropharynx. Conclusions This study, for the first time, assessed the reliability of upper airway analysis with CBCT when all steps of image processing and measurement are performed by each examiner. Reliability improved with examiner experience, though was generally low for the hypopharynx and nasopharynx volumes and overall minimal cross-sectional area. The oropharyngeal volume was the only parameter to have excellent intra- and inter-examiner reliability. |
| Databáze: | OpenAIRE |
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