Computed tomography quantification of tracheal abnormalities in COPD and their influence on airflow limitation.

ABSTRACT:

Purpose

To present a method to automatically quantify tracheal morphology changes during breathing and investigate its contribution to airflow impairment when adding CT measures of emphysema, airway wall thickness, air trapping and ventilation.

Methods

Because tracheal abnormalities often occur localized, a method is presented that automatically determines the most abnormal trachea section based on automatically computed sagittal and coronal lengths. In this most abnormal section, trachea morphology is encoded using four equiangular rays from the center of the trachea and the normalized lengths of these rays are used as features in a classification scheme. Consequently, trachea measurements are used as input for classification into GOLD stages in addition to emphysema, air t

SUBMITTER: Gallardo Estrella L 

PROVIDER: S-EPMC6052793 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature