title: 1 mm Catheter tip Doppler probe using a single crystal and bridge.
mesh_terms: D000818:Animals; D001783:Blood Flow Velocity; D004301:Doppler Effect; D005312:Fetal Blood / Q000502:physiology; D006801:Humans; D012756:Sheep; D014465:Ultrasonics / Q000295:instrumentation*; D014463:Ultrasonography