Comparative analysis of upper airway volume with lateral cephalograms and cone-beam computed tomography
| Autor: | Xin Feng, Gang Li, Xie-Qi Shi, Lin Liu, Zhenyu Qu, Karin Näsström |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Adult
Male Cone beam computed tomography Adolescent Cephalometry Radiography Dentistry Orthodontics Computed tomography Young Adult Nasopharynx Image Processing Computer-Assisted Screening method Humans Medicine Child Retrospective Studies Observer Variation medicine.diagnostic_test business.industry Lateral cephalograms Age Factors Reproducibility of Results Organ Size Radiography Dental Digital Cone-Beam Computed Tomography respiratory system Weak correlation Adenoids Pharynx Female business Airway Volume (compression) |
| Zdroj: | American Journal of Orthodontics and Dentofacial Orthopedics. 147:197-204 |
| ISSN: | 0889-5406 |
| DOI: | 10.1016/j.ajodo.2014.10.025 |
| Popis: | Introduction In this study, we aimed to evaluate the adenoidal nasopharyngeal ratio (ANR) on lateral cephalograms by assessing upper airway volumes using cone-beam computed tomography (CBCT) images as the validation method. Methods Fifty-five patients were included in the study, and it was essential that the lateral cephalograms and CBCT images taken at their examinations were not more than 1 week apart. There were 32 subjects in group A (age ≤15 years) and 23 subjects in group B (age >15 years). The ANR was measured on the lateral cephalograms. The area and volumetric measurements of the nasopharynx and the total upper airway were obtained from CBCT images. Repeated measurements of the ANR and airway volume were performed on 10 subjects by 2 observers. Results Group A had a higher correlation (r = −0.78) between the ANR and the nasopharynx volume than did group B (r = −0.57). The ANR had a weak correlation with the total upper airway volume (group A, r = −0.48; group B, r = −0.32). Both measurements made on lateral cephalograms and CBCT were highly reproducible in terms of intraobserver and interobserver agreement. Conclusions Based on our results, the measurement of the ANR on lateral cephalograms can be used as an initial screening method to estimate the nasopharynx volumes of younger patients (age ≤15 years). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect