Comparative Analysis of the Upper Airway Volume Using Lateral Cephalogram and Cone-beam Computed Tom

• 作 者: FengXin;LiGang;QuZhenyu;LiuLin;N(a)sstr(o)mKarin;ShiXieqi;
• 机 构: Department of Oral and Maxillofacial Radiology,Stomatological Hospital,Dalian
• 出 处: 2014xi`an Conference of International Society for Maxillofac
• 发表日期: 2014年期

　　Purpose: This study aimed to evaluate the ANR(adenoidal nasopharyngeal ratio)on lateral cephalograms on assessing the upper airway volume using CBCT images as validation method.Methods: Thirty-two patients(mean age 11.8±1.6 years)were included in the study and it was essential that the lateral cephalogram and CBCT images taken at the examination were not more than 1 week apart.ANR was measured on the lateral cephalograms.The area and volumetric measurement of the nasopharynx(NP)and the total upper airway were obtained on CBCT images.Repeated measurements of ANR and airway volume were performed on 10 cases by two observers.