Shaunak Amin

1 Introduction Current assessment techniques for tracheomalacia are highly variable, including flexible or rigid bronchoscopy, and dynamic radiographic imaging including ultrashort echo time magnetic resonance imaging (UTE MRI), four-dimensional computed tomography (4D CT), fluoroscopy, and tracheobronchography [1-4].

Background Current assessment techniques for determining whether a patient has normal interarytenoid anatomy, a deep interarytenoid notch, or a minor laryngeal cleft are highly variable. However, differentiating between these three entities is important, given it may distinguish whether a patient should be considered for surgical intervention. The Interarytenoid Assessment Protocol (IAAP) was developed to provide standardization of interarytenoid anatomy evaluations.