Radiology Rounds
A Closer Look at Interstitial Lung Disease
Updated International Guidelines for IPF Diagnosis: A Radiology Perspective
Chronic Hypersensitivity Pneumonitis
An important differentiating feature of hypersensitivity pneumonitis is the presence of air trapping, which is the primary reason to perform expiratory imaging as part of the CT examination.6 On the expiratory RV image, we see areas of air trapping, suggesting HP.