Quantitative computed tomography and visual emphysema scores: association with lung function decline.

Background: Computed tomography (CT) visual emphysema score is a better predictor of mortality than single quantitative CT emphysema measurements in COPD, but there are numerous CT measurements that reflect COPD-related disease features. The purpose of this study was to determine if linear combinations of quantitative CT measurements by principal component analysis (PCA) have a greater association with forced expiratory volume in 1 s (FEV) lower limit of normal (LLN) annualised change (ΔFEV) than visual emphysema score in COPD.

Methods: In this retrospective, longitudinal study, demographic, spirometry and CT images were acquired.

A First Look at Equity, Diversity, and Inclusion of Canadian Medical Physicists: Results From the 2021 COMP EDI Climate Survey.

Purpose: In 2021, the Canadian Organization of Medical Physicists (COMP) conducted its first equity, diversity, and inclusion Climate Survey. The membership's experiences of inclusion, belonging, professional opportunities, discrimination, microaggressions, racism, and harassment in their professional lives are presented.

Methods And Materials: The ethics-reviewed survey was distributed in English and French to full members of COMP.