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. 2007 Jan;103(1):102-8.
doi: 10.1016/j.tripleo.2006.06.008. Epub 2006 Sep 1.

Evaluation of cross-section airway configuration of obstructive sleep apnea

Takumi Ogawa  1 , Reyes Enciso, Werner H Shintaku, Glenn T Clark
Affiliations

Evaluation of cross-section airway configuration of obstructive sleep apnea

Takumi Ogawa et al. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Jan.

Abstract

Upper airway imaging techniques can be useful to identify the exact location and nature of the obstruction in obstructive sleep apnea (OSA) patients. Ten OSA patients and 10 non-OSA control subjects were imaged using cone-beam computed tomography (NewTom QR-DVT9000) to compare their upper airway structure. The OSA subjects presented higher BMI (OSA: 29.5 +/- 9.05 kg/m(2); non-OSA: 23.1 +/- 3.05 kg/m(2) [P = .034]), lower total volume (mm(3)) of the airway (OSA: 4868.4 +/- 1863.9; non-OSA: 6051.7 +/- 1756.4 [P = .054]), statistically significantly smaller anterior-posterior dimension (mm) of the minimum cross-section segment (OSA: 4.6 +/- 1.2; non-OSA: 7.8 +/- 3.31 [P = .009]), and smaller minimum cross-section area (OSA: 45.8+/-17.5 mm(2); non-OSA: 146.9 +/- 111.7 mm(2) [P = .011]) positioned below the occlusal plane in 70% of the cases (OSA:7 out of 10; non-OSA: 5 out of 10 [P = .030]). The OSA group presented a concave or elliptic shaped airway and the non-OSA group presented a concave, round, or square shaped airway.

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Figures

Fig. 1
Fig. 1
The region of interest selected by the operator as the oropharyngeal region defined in two planes: the mid-sagittal image of the airway (a) and the axial image (b).
Fig. 1
Fig. 1
The region of interest selected by the operator as the oropharyngeal region defined in two planes: the mid-sagittal image of the airway (a) and the axial image (b).
Fig. 2
Fig. 2
The volume computed of the oropharyngeal region for a control (a and b) and an OSA case (c and d).
Fig. 2
Fig. 2
The volume computed of the oropharyngeal region for a control (a and b) and an OSA case (c and d).
Fig. 2
Fig. 2
The volume computed of the oropharyngeal region for a control (a and b) and an OSA case (c and d).
Fig. 2
Fig. 2
The volume computed of the oropharyngeal region for a control (a and b) and an OSA case (c and d).
Fig. 3
Fig. 3
Axial NewTom image of the smallest cross-section area (a); the anteroposterior (7.8mm) and lateral dimensions (17.7mm) of the same area (b).
Fig. 3
Fig. 3
Axial NewTom image of the smallest cross-section area (a); the anteroposterior (7.8mm) and lateral dimensions (17.7mm) of the same area (b).
See this image and copyright information in PMC

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