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Fundamental Concepts Regarding Sizing and Discrimination of Air Bubbles and Red Cell Aggregates Using Pulsed‐Doppler Ultrasound
Author(s) -
MOEHRING MARK A.
Publication year - 1996
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.1996.tb00937.x
Subject(s) - sizing , doppler effect , embolus , volume (thermodynamics) , materials science , signal (programming language) , ultrasound , acoustics , biomedical engineering , doppler ultrasound , chemistry , physics , medicine , radiology , computer science , organic chemistry , quantum mechanics , astronomy , programming language
The embolus to blood power ratio (EBR) model is briefly described, which predicts that emboli become more detectable as Doppler carrier frequency decreases and vessel diameter decreases. The EBR model indicates that the use of the backscattered power from the blood in the Doppler sample volume and the use of more than one carrier frequency will be useful in discriminating size and composition of an embolic signal. The EBR model is shown to provide both sizing and discrimination of red cell aggregates from air bubbles, using dual frequency interrogation of an embolus