Dr. Jacek Wojtczak and Dr. Bo Hu have written a chapter in the "Atlas of Airway Management: Techniques and Tools", 2nd Edition, edited by Drs. Steven Orebaugh and Paul Bigeleisen and publised by Lippincott Williams & Wilkins.  Their chapter (11) is titled, "New Methods of Bedside Airway Assessment: Cone Beam Computed Tomography, Ultrasound, and Craniofacial Phenotyping", pp 76-86.