Kenneth K. Lau, Presenter: Nothing to Disclose

Theodore Lau, Abstract Co-Author: Nothing to Disclose

The 320-slice multidetector CT (320-MDCT) has the ability to provide dynamic volume assessment of the laryngeal and tracheal airway during breathing and phonation. The purpose of this exhibit is to demonstrate the utility of 320-MDCT in diagnosing certain upper airway movement and phonation disorders that may not be diagnosed on conventional CT.

320-MDCT is useful in detecting, monitoring, and assessing treatment response on abnormal upper airway movement in a) laryngeal dysfunction that can mimic asthma, b) different forms of tracheomalacia, c) excessive dynamic airway collapse with posterior tracheal membrane bulging into the tracheal lumen, d) primary airway amyloidosis, e) pseudoxanthoma elasticum associated with haemoglobinopathy, f) vocal cord movement disorders in vocal cord paralysis, Parkinsonism and rheumatoid arthritis. CT and MRI are common imaging techniques for laryngeal structural pathology, but cannot demonstrate abnormal movement of the larynx and trachea that can be symptomatic. The 320-MDCT with its 4-D capability can be a valuable tool in the dynamic assessment of upper airway movement and phonation disorders and become a non-invasive alternative to laryngoscopy. This CT technique would also allow better understanding of the laryngeal pathophysiology in future.  

http://abstract.rsna.org/uploads/2014/14017348/14017348_5a89.pdf

Lau, K, Lau, T, 4-Dimensional (4D) CT Assessment of Abnormal Upper Airway Movement and Phonation Disorders.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14017348.html