Measurements in time-frequency diagrams employed in the characterization of state transitions using scattered ultrasound signals during blood clotting: a numerical analysis.
DOI:
https://doi.org/10.5433/1679-0375.2000v21n4p35Keywords:
ultrasound, hemostasis, coagulation, time-frequency analysis.Abstract
This work introduces a new perspective of analyzing the signal obtained by means of the Ultrasonic Method (US) in the study of blood plasma alterations during coagulation. The emphasis is based on time versus the frequency of digitalized signals generated by US particles scattering in random motion. For this purpose, seven PT (protombin time) tests were produced with normal coagulation plasma samples and a deficient one in Factor V.
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