Journal article

Novel three-dimensional methods to analyze the morphology of the nasal cavity and pharyngeal airway

Xiaowen Niu, Sivaranjani Madhan, Marie A Cornelis, Paolo M Cattaneo

ANGLE ORTHODONTIST | E H ANGLE EDUCATION RESEARCH FOUNDATION, INC | Published : 2021

Abstract

OBJECTIVES: To assess the intraexaminer and interexaminer reliabilities of novel semiautomatic methods to segment the nasal cavity (NC) and pharyngeal airway (PA) and to determine the minimal cross-sectional area (CS) and hydraulic diameter (HD) of the PA. MATERIALS AND METHODS: To test reproducibility, two examiners analyzed the NC and PA independently in 10 retrospectively selected cone beam computed tomography (CBCT) images using semiautomatic segmentation. The PA centerline was determined to assess the minimal CS and HD. The intraclass correlation coefficient (ICC) was used to calculate intraexaminer and interexaminer reliabilities. Measurement errors were assessed by Dahlberg's formula ..

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Grants

Awarded by State Scholarship Fund from the China Scholar Council


Funding Acknowledgements

The authors extend gratitude to Simon Lejaegere, medical application engineer of Materialise, for his technical support, and the State Scholarship Fund from the China Scholar Council (201609110098).