title: Blood flow in deep abdominal and pelvic vessels: ultrasonic pulsed-Doppler analysis.
abstract: Ultrasonic pulsed-Doppler signals from deep-lying vessels in the normal abdomen and pelvis are described. The signal characteristics combine to produce a Doppler "signature" that is specific for each vessel. The clinical potential of this method of deep flow detection is considered in relation to three areas of Doppler signal analysis: first, qualitative indication of the presence, direction, or absence of flow in a structure; second, more quantitative description of time velocity waveforms and Doppler spectral content; and third, the estimation of absolute volume flow. Limitations of these methods for the abdominal signals obtained are discussed.
mesh_terms: D000005:Abdomen / Q000098:blood supply*; D001011:Aorta / Q000502:physiology; D001158:Arteries / Q000502:physiology; D002445:Celiac Artery / Q000502:physiology; D005260:Female; D006801:Humans; D007083:Iliac Artery / Q000502:physiology; D008099:Liver / Q000098:blood supply; D010053:Ovary / Q000098:blood supply; D010388:Pelvis / Q000098:blood supply*; D012039:Regional Blood Flow; D012077:Renal Artery / Q000502:physiology; D014463:Ultrasonography / Q000295:instrumentation; D014599:Uterus / Q000098:blood supply; D014680:Veins / Q000502:physiology