Diagnostic value of pulsed wave doppler in pneumothorax: a prospective study.

PW Doppler is a useful tool in the diagnosis of pneumothorax. It has a high sensitivity and specificity for the detection of pneumothorax. It is also superior to both lung sliding and the barcode sign in detecting pneumothorax. The Dogan's sign can be used safely in the diagnosis of pneumothorax, together with lung sliding and the barcode sign.