Figure 1.
Protocol for sub-mental scanning.
The procedure on ultrasound scanning is shown on the left panel and the corresponding computed tomography and ultrasonographic images on the right panel. A, Geniohyoid muscle; B, ramus of the mandible; C, hypoglossal muscle and corresponding acoustic shadow; D, airspace; H, hyoid bone and its acoustic shadow; T, tongue; HM, hyoid-external-meatus; RG, retro-glossal; RP, retro-palatal; UAL, upper airway length.
Figure 2.
Flowchart of the trial.
Table 1.
Demographics of participants with no OSA, mil-moderate OSA, and severe OSA (n = 105).
Table 2.
Ultrasonographic parameters of non-OSA, mild-moderate OSA, and severe OSA patients (n = 105).
Table 3.
Demographic and ultrasonographic parameters of the model-development and validation groups.
Table 4.
Odds ratio for severe obstructive sleep apnea in the model-development group by univariate and multivariate analyses.
Table 5.
Probability of diagnosing severe obstructive sleep apnea in the model-development group*.
Figure 3.
Receiver operating characteristic (ROC) curves for probability of severe OSA in the (A) model-development group and (B) validation group.