Bright narrow beams that extend from pleural line down to the bottom of the screen are an artifcat created by interstitial fluid. This finding, while sensitive, is not specific and can be present due to one or more of: infection, congestive heart failure, pulmonary fibrosis or scarring.
here we have a scan using the curvilinear transducer on the lung preset again in a sagittal plane somewhere on the anterior chest and you can see here again rib shadows black coming down to the bottom of the screen up here the bright white line is the plural line and streaking from the plural line to the bottom of the screen are b-lines obscuring the a-line pattern these could be suggestive of interstitial edema the possible causes of which would include infection congestive heart failure or interstitial fibrosis
