1. Volume 98, Issue 4, Pages 301-307 (April 2004)
Computed tomographic evaluation of the role of craniofacial and upper airway morphology in obstructive sleep apnea in Chinese 
Bing Lam, Clara G.C Ooi, Wilfred C.G Peh, I Lauder, Kenneth W.T Tsang, Wah-Kit Lam, Mary S.M Ip 
Respiratory Medicine 
Volume 98, Issue 4, Pages (April 2004)
DOI: /j.rmed

2. Figure 1
Skeletal and soft tissue profile landmarks used in this study. A= subspinale, B=supramental, H=hyoid, MP=mandibular plane, N=nasion, PM=pterygomaxillare, S=sellar; the mid-point of the sella turcica, U=tip of the uvula, SNA=angle measurement from sella to nasion to point A, SNB=angle measurement form sella to nasion to point B, ANB=difference between SNA and SNB (SNA minus SNB), MPH=mandibular plane–hyoid bone distance; shortest perpendicular distance between the plane of the inferior mandibular cortex and the hyoid bone, PMU=length of soft palate, Max-SP=maximum thickness of the soft palate (SP) perpendicular to PM-U.
Respiratory Medicine  , DOI: ( /j.rmed )