LAUSR

of the beam is valid and depends in large measure on the transducer being used. Using a high-frequency linear transducer would obviously limit the depth of penetration to a far greater extent than the curvilinear transducers we use for liver imaging, which are designed to image at greater depths. B-lines represent an amplification of the ultrasound signal being received by the transducer, hence they are brighter than the surrounding structures regardless of depth; thus, to some degree, the ability to visualize them is independent of depth. The fact that we clearly could see the B-lines in our study speaks for itself.