Comparing posteroanterior with lateral and anteroposterior chest radiography in the initial detection of parapneumonic effusions

摘要

Background: It is unclear whether anteroposterior (AP) or posteroanterior with lateral (PA/Lat) chest radiographs are superior in the early detection of clinically relevant parapneumonic effusions (CR-PPEs). The objective of this study was to identify which technique is preferred for detection of PPEs using chest computed tomography (CCT) as a reference standard.