To determine if focused ultrasonography (US) combined with a diagnostic microbubble-based US contrast agent can be used to modulate glomerular ultrafiltration and size selectivity.
Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Focused Ultrasound Laboratory, 221 Longwood Ave, Room 515, Boston, MA 02215, USA. kfischer@bwh.harvard.edu