A Quantitative Approach to Distinguish Pneumonia From Atelectasis Using Computed Tomography Attenuation

Objective It is known that atelectasis demonstrates greater contrast enhancement than pneumonia on computed tomography (CT). However, the effectiveness of using a Hounsfield unit (HU) threshold to distinguish pneumonia from atelectasis has never been shown. The objective of the study is to demonstrate that an HU threshold can be quantitatively used to effectively distinguish pneumonia from atelectasis. Methods Retrospectively identified CT...