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Can Med Assoc J ; 108(11): 1391-4, 1973 Jun 02.
Article in English | MEDLINE | ID: mdl-4704907

ABSTRACT

Ultrasonic Doppler monitoring of pulsatile flow patterns in the major systemic arteries has been rendered possible by the development of intravenous and intra-esophageal probes, thereby obviating major surgery or arterial catheterization. The information provided by Doppler flow signals obtained in this way is considerably enhanced by the use of spectrum analysis. The advantages include immunity from interference from noise or extraneous signals, the separation of two or more superimposed flow signals, and superposition of pressure and flow signals for time correlation and comparison.


Subject(s)
Blood Flow Velocity , Monitoring, Physiologic , Spectrum Analysis , Ultrasonics , Abdomen/blood supply , Aorta/blood supply , Catheterization , Esophagus/blood supply , Humans , Regional Blood Flow , Transducers
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