Abstract
Objectives
The objectives of this study included using the cone beam computed tomography (CBCT) technology to assess: (1) intra- and inter-observer reliability of the volume measurement of the nasal cavity; (2) the accuracy of the segmentation protocol for evaluation of the nasal cavity.
Materials and methods
This study used test–retest reliability and accuracy methods within two different population sample groups, from Eastern Asia and North America. Thirty obstructive sleep apnea (OSA) patients were randomly selected from administrative and research oral health data archived at two dental faculties in China and Canada. To assess the reliability of the protocol, two observers performed nasal cavity volume measurement twice with a 10-day interval, using Amira software (v4.1, Visage Imaging Inc., Carlsbad, CA). The accuracy study used a computerized tomography (CT) scan of an OSA patient, who was not included in the study sample, to fabricate an anthropomorphic phantom of the nasal cavity volume with known dimensions (18.9 ml, gold standard). This phantom was scanned using one NewTom 5G (QR systems, Verona, Italy) CBCT scanner. The nasal cavity was segmented based on CBCT images and converted into standard tessellation language (STL) models. The volume of the nasal cavity was measured on the acquired STL models (18.99 ± 0.066 ml).
Results
The intra-observer and inter-observer intraclass correlation coefficients for the volume measurement of the nasal cavity were 0.980–0.997 and 0.948–0.992 consecutively. The nasal cavity volume measurement was overestimated by 1.1%-3.1%, compared to the gold standard.
Conclusions
The semi-automatic segmentation protocol of the nasal cavity in patients with sleep apnea and by using cone beam computed tomography is reliable and accurate.
Clinical relevance
This study provides a reliable and accurate protocol for segmentation of nasal cavity, which will facilitate the clinician to analyze the images within nasoethmoidal region.
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Data Availability
The datasets generated and/or analyzed during the current study are available from the corresponding author upon reasonable request.
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Funding
This work was supported by Canadian Institutes of Health Research (grant 325899), the Canadian Foundation of Innovation (CFI 28236), Chinese Stomatological Association Clinical Research Fund (CSA-O2022-08), Shandong Provincial Natural Science Foundation (grant N.ZR2020QH161), China Oral Health Foundation (grant A2021-102), China Postdoctoral Science Foundation, grant number(2020M682173).
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Authors and Affiliations
Contributions
Hui Chen, study design, wrote the manuscript, prepared figures and tables;
Tao Lv, study design, revise the manuscript;
Qing Luo, analyzed the images, statistical analysis;
Lei Li, 3D printing; prepared the phantom;
Qing Wang, analyzed the data;
Yanzhong Li, 3D analysis of nasal cavity; prepared figures and tables;
Debo Zhou, analyzed the data, prepared the phantom;
Elham Emami, wrote and revised the manuscript;
Matthieu Schmittbuhl, wrote and revise the manuscript;
Paul van der Stelt, wrote the manuscript;
Nelly Huynh, study design, wrote and revise the manuscript.
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Ethics approval and consent to participate
This is a retrospective study based on the CBCT images of both Canadian and Chinese OSA patients.
The protocol of recruiting Canadian OSA patients was approved by the Research Ethics Board of Health of the Université de Montréal (13-076-CERES-D).
The protocol of recruiting patients from China was approved by the Medical Ethic Committee of the Dental School of Shandong University (NO.GR201814).
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The authors declare no competing interests.
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Chen, H., Lv, T., Luo, Q. et al. Reliability and accuracy of a semi-automatic segmentation protocol of the nasal cavity using cone beam computed tomography in patients with sleep apnea. Clin Oral Invest 27, 6813–6821 (2023). https://doi.org/10.1007/s00784-023-05295-6
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DOI: https://doi.org/10.1007/s00784-023-05295-6