OBJECTIVE: The goal of this project was to define and measure human airway space with radiographic volumetric 3-dimensional imaging and digital reconstruction of the pharynx using cone-beam computerized tomography. STUDY DESIGN: This was a randomized retrospective study. Ten patient scans were selected randomly from a pool of 196 subjects seeking dental treatment at the University of California, San Francisco. Digital Imaging and Communications in Medicine-format volume images were captured using a low-radiation rapid-scanning cone-beam computerized tomography system (Hitachi MercuRay). RESULTS: Detailed progressive rostrocaudal cross-sectional area histograms indicated that 8 of the 10 subjects demonstrated a region of maximum constriction near the oropharynx level. The most restricted cross-sectional area varied from 90 mm(2) to 360 mm(2). CONCLUSIONS: The maximum constriction of the airway in 10 subjects quietly breathing for 10 seconds indicated variation in the level of the pharynx and the extent of the rostrocaudal zone of restriction.
OBJECTIVE: The goal of this project was to define and measure human airway space with radiographic volumetric 3-dimensional imaging and digital reconstruction of the pharynx using cone-beam computerized tomography. STUDY DESIGN: This was a randomized retrospective study. Ten patient scans were selected randomly from a pool of 196 subjects seeking dental treatment at the University of California, San Francisco. Digital Imaging and Communications in Medicine-format volume images were captured using a low-radiation rapid-scanning cone-beam computerized tomography system (Hitachi MercuRay). RESULTS: Detailed progressive rostrocaudal cross-sectional area histograms indicated that 8 of the 10 subjects demonstrated a region of maximum constriction near the oropharynx level. The most restricted cross-sectional area varied from 90 mm(2) to 360 mm(2). CONCLUSIONS: The maximum constriction of the airway in 10 subjects quietly breathing for 10 seconds indicated variation in the level of the pharynx and the extent of the rostrocaudal zone of restriction.
Authors: Stig Isidor; Gabriele Di Carlo; Marie A Cornelis; Flemming Isidor; Paolo M Cattaneo Journal: Angle Orthod Date: 2018-05-29 Impact factor: 2.079
Authors: Chih-Wei Chang; Gregory Atkinson; Niket Gandhi; Michael L Farrell; Steven Labrash; Alice B Smith; Neil S Norton; Takashi Matsui; Scott Lozanoff Journal: Surg Radiol Anat Date: 2016-02-23 Impact factor: 1.246
Authors: S Vijayakumar Jain; M R Muthusekhar; M F Baig; P Senthilnathan; S Loganathan; P U Abdul Wahab; M Madhulakshmi; Yogaen Vohra Journal: J Maxillofac Oral Surg Date: 2018-05-08