title: Platelet aggregation induced by ultrasound under specialized conditions in vitro.
abstract: Human platelets were induced by 2.1-megahertz ultrasound to form aggregates around gas-filled pores in membranes immersed in platelet-rich plasma. The spatial peak intensities required were only about 16 to 32 milliwatts per square centimeter. Ultrasound generated by a medical Doppler device, whose intensity exceeded this, induced aggregate formation under the same conditions.
mesh_terms: D001792:Blood Platelets / Q000528:radiation effects / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning; D010974:Platelet Aggregation / Q000528:radiation effects*; D014465:Ultrasonics