Abstract:

Objective    To analyze the correlation between OSAHS children's minimal width measured in cephalometrical film and the minimal cross section area in CBCT to determine the accuracy of airway 2D measurement in the diagnosis of airway obstruction. Methods    48 OSAHS children（10-12y）diagnosed by PSG were selected. All the subjects took cephalometrical film and CBCT at the same time. We got the airway volume and minimum cross section area by inputing DICOM form data into the dolphin. Make the Pearson correlation analysis concerning the minimum width and minimum cross section area. Results    The minimal upper airway site measured in cephalometrical film was at the same place where the minimal cross section area lied. The mean value of the most narrow sagittal width was（3.79 ± 2.40）mm；the minimal cross section area measured in CBCT was（103.30 ± 34.47）mm2. Pearson correlation R = 0.670（P < 0.05）. Conclusion    2D and 3D upper airway measurement in OSAHS children has strong correction. Cephalometrical film can reflect the airway condition and can be used in the primary diagnosis of airway obstruction site and degree.

Key words: obstructive sleep apnea-hypopnea syndrome, OSAHS；upper airway measurement；cephalometrical film；cone-beam computer tomography, CBCT； upper airway minimal cross section area

摘要：

目的    分析阻塞性睡眠呼吸暂停低通气综合征（OSAHS）儿童头颅侧位片上气道矢状向最小宽度与锥体束CT（CBCT）上气道最小横截面积的相关性，判断头颅侧位片是否可以作为儿童气道阻塞的初步诊断依据。方法       选取2012年7月至2016年7月就诊于武汉大学口腔医院正畸科、经多导睡眠监测（PSG）诊断为OSAHS的10 ~ 12岁患儿48例，将与头颅侧位片同期拍摄的CBCT数据导入Dolphin软件，计算上气道最小横截面积。将头颅侧位片测量的气道矢状向最小宽度与CBCT三维重建得到的最小横截面积进行Pearson相关性分析。结果    头颅侧位片上气道最窄处与CBCT气道重建所得的气道最小横截面积所在的位置基本一致，头颅侧位片测量的上气道最窄处矢状向宽平均值为（3.79 ± 2.40）mm，CBCT测量最小横截面积为（103.30 ± 34.47）mm2，两者之间Pearson相关系数（R）= 0.670（P < 0.05）。结论    OSAHS儿童气道的二维和三维测量有较强的相关性，头颅侧位片可在一定程度上反映气道的真实情况，作为气道阻塞的初步筛选工具。

关键词: 阻塞性睡眠呼吸暂停低通气综合征, 上气道测量, 头颅侧位片, 锥体束CT, 上气道最小横截面积