Nonspecific Interstitial Pneumonia and Usual Interstitial Pneumonia: Comparative Appearances at and Diagnostic Accuracy of Thin-Section CT

Abstract

In patients with a clinical presentation of idiopathic pulmonary fibrosis, the accuracy of thin-section CT in identifying NSIP is considerably higher than previously reported. At CT, NSIP is characterized by more ground-glass attenuation and a finer reticular pattern than is UIP. Nevertheless, considerable overlap in thin-section CT patterns exists between NSIP and UIP.