Quantitative investigation of acoustic streaming in blood

摘要: Acoustic streaming may have practical utility in diagnostic medical ultrasound distinguishing between stagnant blood and tissue as well clotted unclotted blood. This distinction can be difficult with conventional but high value managing trauma patients internal hemorrhage. Ultrasound energy applies a force to by momentum transfer, resulting bulk that is function of the acoustic attenuation, sound speed, intensity, viscosity, boundary conditions posed geometry around hematoma. A simple tubular model was studied analytically, finite element simulation, experimentally vitro measurement. The simulation agreed closely measurements while analytic solutions were found valid only for beam diameters approximating diameter channel. Experimentally, decreased began clot flow not detected In contrast, echogenicity same samples did change appreciably from state studied. Streaming detection appears offer potential tool improving hemorrhage diagnosis.