Reliability of upper airway linear, area, and volumetric measurements in cone-beam computed tomography

Mattos, Cláudia Trindade; Cruz, Christiane Vasconcellos; Matta, Thais Cristina Sobreira da; Pereira, Leonardo de Abreu; Solon-de-Mello, Priscilla de Almeida; Ruellas, Antônio Carlos de Oliveira; Sant’Anna, Eduardo Franzotti

doi:10.1016/j.ajodo.2013.10.013

Cited by 54 publications

(27 citation statements)

References 32 publications

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“…However, a few studies have assessed the reliability of different protocols to delineate the upper airway in adults. [46][47][48] Very high reproducibility was found in all This is in agreement with the present study were the ICC value was 1.00. However, there was greater variation in the reliability of minimal oropharyngeal cross-sectional area measurements in previous adult studies.…”

Section: Discussionsupporting

confidence: 92%

“…Intraexaminer ICC values ranged from 0.78 to 0.99, and interexaminer values ranged from 0.83 to 0.98. [46][47][48] In the present study, very high intra-and interobserver reliability for calculation of the minimal cross-sectional area was observed with ICC values of 1.00.…”

Section: Discussionsupporting

confidence: 61%

“…46,48 Guijarro-Martínez and Swennen 46 calculated relative errors ranging from 13.45% to 15.92% for minimal oropharyngeal cross-sectional area measurements and ranging from 1.03% to 1.53% for oropharyngeal volume measurements, depending on the observer. Mattos et al 48 determined measurement errors by the ratio of the absolute mean difference to the mean measurement value. This ranged from 2.7% to 6.4% for intra-and interobserver measurements of minimal cross-sectional area and volume.…”

Section: Discussionmentioning

confidence: 99%

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Proposal of new upper airway margins in children assessed by CBCT

Anandarajah¹,

Abdalla²,

Dudhia³

et al. 2015

Dentomaxillofacial Radiology

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Objectives: Recently, studies have performed three-dimensional analyses of upper airways in children. However, there was a lack of airway delineation according to anatomical boundaries and/or easily mobile soft-tissue landmarks were used. The aim of the present study was to define new upper airway margins in children on CBCT according to anatomical bony landmarks and to validate the method. Methods: 25 scans were randomly selected from a larger database containing CBCT scans of children prior to orthodontic treatment (14 girls and 11 boys; mean age, 10.9 ± 2.5 years). Scans were evaluated by two observers. Specific head positioning and virtual orientation protocols were adopted and greyscale thresholding was established for each patient. Volume and minimum cross-sectional area of the oropharynx were calculated. Intra-and interobserver reliability were assessed by reassessment of the CBCTs 2 weeks later. Results: The new airway margins were defined superiorly by a line passing through the palatal plane (anterior nasal spine to posterior nasal spine) extending to the posterior wall of the pharynx, inferiorly by a line passing from the anterosuperior edge of C4 to menton, anteriorly by a line passing from the soft palate to menton, posteriorly and laterally by the respective pharyngeal walls. Method error for airway volume and minimal cross-sectional area was #2.00%, and intra-and interobserver reliability ranged from 0.99 to 1.00. Conclusions: The proposed protocol utilizes easily identifiable bony landmarks to delineate the upper airway on cone beam scans of children and was found to be reliable and reproducible.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 61%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Proposal of new upper airway margins in children assessed by CBCT

Anandarajah¹,

Abdalla²,

Dudhia³

et al. 2015

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

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“…The tracheotomy group also had shorter mandibular dimensions and flatter mandibles. 9,12,15,18,22,24 This study links pretreatment airway measures to treatment outcomes. The airway measure findings in those in the RS group compared with those in the control group, specifically the smaller cross-sectional area of the nasopharynx, longer craniocaudal length of the oropharynx, and larger volume and cross-sectional area of the hypopharynx, may indicate dilation above and below the level of maximal narrowing, the oropharynx.…”

Section: Discussionmentioning

confidence: 99%

Upper Airway Computed Tomography Measures and Receipt of Tracheotomy in Infants With Robin Sequence

Lee

Evans

Perez

et al. 2016

JAMA Otolaryngol Head Neck Surg

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Computed tomography measures quantifying tongue position and mandibular configuration can identify infants with Robin sequence, and importantly, differentiate those who have severe upper airway compromise requiring tracheotomy. Following validation, these measures can be used for objective upper airway assessment and for expediting clinical decision-making in these challenging cases for which no such tools currently exist.

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“…24,25 Previous studies have shown that upper airway morphology could be precisely measured by CBCT with high reliability. 26 In this study, ICC values to determine interand intraobserver reliability were calculated for all measurements and found to be over 0.75, thus indicating acceptable reliability of upper airway measurements.…”

Section: Cbct-based Upper Airway Measurementsmentioning

confidence: 99%

Three-dimensional analysis of upper airway morphology in skeletal Class III patients with and without mandibular asymmetry

Wen

Wang

Qin

et al. 2017

The Angle Orthodontist

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Objective: To compare the three-dimensional (3D) morphology of the upper airway in skeletal Class III patients with and without mandibular asymmetry and to investigate the possible underlying correlations between the morphology of the upper airway and mandibular deviation. Materials and Methods: Cone-beam computed tomography images of 54 subjects with skeletal Class III malocclusion (ANB angle 0.48, Wits À5.58) were taken and 3D upper airway models were reconstructed using Dolphin 3D software. According to the distance (d) from symphysis menti to the sagittal plane, all subjects were divided into a symmetry group (d 2 mm) and an asymmetry group (d ! 4 mm). Based on the severity of mandibular deviation, the asymmetry group was divided into subgroup I (4 mm d ,10 mm) and subgroup II (d ! 10 mm). Cross-sectional linear distances, areas, and volumetric variables of the upper airway were measured in the 3D airway model. Results: Width of the inferior limit of the glossopharynx (P3W), cross-sectional area of the anterior limit of the nasal airway (P5S), and height of the glossopharynx (GPH) in the asymmetry group were significantly larger than in the symmetry group. As for subjects with severe mandibular deviation in subgroup II (d ! 10 mm), volume of the glossopharynx (GPV), total volume of the pharynx (TPV), length of the inferior limit of the velopharynx (P2L), and ratio of length to width of the inferior limit of the velopharynx (P2L/P2W) showed significantly negative correlations with mandibular deviation (r . 0.7, P , .05). Conclusions: In Class III subjects with severe mandibular asymmetry, the pharyngeal airway showed a tendency toward constriction and presented a more elliptical shape as mandibular deviation became more severe (P , .01). (Angle Orthod. 2017;87:526-533)

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Reliability of upper airway linear, area, and volumetric measurements in cone-beam computed tomography

Cited by 54 publications

References 32 publications

Proposal of new upper airway margins in children assessed by CBCT

Proposal of new upper airway margins in children assessed by CBCT

Upper Airway Computed Tomography Measures and Receipt of Tracheotomy in Infants With Robin Sequence

Three-dimensional analysis of upper airway morphology in skeletal Class III patients with and without mandibular asymmetry

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