IADR Abstract Archives
Effectiveness of CBCT volume and area to diagnose Adenoid Hypertrophy
Objectives: To answer the following questions: (1) Were selected evaluators reliable on the two consecutive assessments using Dolphin automatic segmentation function? (2) Does Dolphin automatic segmentation function produce a reliable assessment of airway obstruction? (3) Were Dolphin automatic segmentation measurements reflective of the gold standard – Nasoendoscopy?
Methods: Cone-Beam Computer Tomography scans of 38 patients with a history of upper airway problems were analyzed. Two previously calibrated evaluators applied a validated method. Dolphin© Imaging was the selected software due to its popularity to automatically provide volume and minimal cross-sectional area of delimited nasopharyngeal airway space.
Results: The reliability between the two assessments, by the same evaluator, on Dolphin automatic segmentation function for volume and minimal cross-sectional area was excellent, ICC=0.975 CI 95% (0.951, 0.987) and ICC= 0.840 CI (0.693, 0.917) respectively. The inter-operator reliability for volume was also excellent (ICC=0.975 CI 0.95,0.98), but only good (ICC=0.701 0.44,0.85) for minimal cross-sectional area. Spearman’s Rank Correlation (ρ) demonstrated a weak association between the values presented by the automatic measurement for both, volume (4.9%; ρ = -0,222) and minimal cross-sectional area (3.7%; ρ = 0.192).
Conclusions: The evaluators were consistent on the 2-trial assessment. Dolphin software appears reliable, but volumetric and minimum cross-sectional area measurements did not reflect the true adenoid size in comparison to the gold standard, the Nasoendoscopy. Health professionals should not rely solely on volume and cross-sectional area of the upper airway constriction using CBCT imaging based on automatic reconstruction software.
Methods: Cone-Beam Computer Tomography scans of 38 patients with a history of upper airway problems were analyzed. Two previously calibrated evaluators applied a validated method. Dolphin© Imaging was the selected software due to its popularity to automatically provide volume and minimal cross-sectional area of delimited nasopharyngeal airway space.
Results: The reliability between the two assessments, by the same evaluator, on Dolphin automatic segmentation function for volume and minimal cross-sectional area was excellent, ICC=0.975 CI 95% (0.951, 0.987) and ICC= 0.840 CI (0.693, 0.917) respectively. The inter-operator reliability for volume was also excellent (ICC=0.975 CI 0.95,0.98), but only good (ICC=0.701 0.44,0.85) for minimal cross-sectional area. Spearman’s Rank Correlation (ρ) demonstrated a weak association between the values presented by the automatic measurement for both, volume (4.9%; ρ = -0,222) and minimal cross-sectional area (3.7%; ρ = 0.192).
Conclusions: The evaluators were consistent on the 2-trial assessment. Dolphin software appears reliable, but volumetric and minimum cross-sectional area measurements did not reflect the true adenoid size in comparison to the gold standard, the Nasoendoscopy. Health professionals should not rely solely on volume and cross-sectional area of the upper airway constriction using CBCT imaging based on automatic reconstruction software.