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An ultrasonic method to measure human plasma coagulation time.
J C Machado1, A Lenzi, W G Silva
1Biomedical Engineering Department, COPPE/UFRJ, Rio de Janeiro, Brazil.
The Journal of the Acoustical Society of America
|October 1, 1991
Summary
An innovative ultrasonic method accurately measures prothrombin time (PT) coagulation by tracking glass particle motion in plasma. This technique offers precision and accuracy comparable to traditional methods for assessing blood clotting.
Area of Science:
- Biomedical Engineering
- Hematology
- Medical Diagnostics
Background:
- Prothrombin time (PT) is a critical measure of blood coagulation.
- Traditional methods for PT measurement can be time-consuming and subjective.
- There is a need for objective and rapid methods to assess coagulation status.
Purpose of the Study:
- To introduce and validate a novel ultrasonic method for measuring coagulation time.
- To assess the precision and accuracy of the ultrasonic method compared to a standard technique.
Main Methods:
- Utilizes ultrasonic scattering from 200-micron glass particles suspended in plasma.
- Measures changes in particle motion, influenced by rheological shifts during coagulation.
- Detects the cessation of particle motion fluctuations as an indicator of clot formation.
Main Results:
- The ultrasonic method accurately determines coagulation time.
- The method demonstrated precision and accuracy compatible with the manual tilt-tube method.
- Effective for both normal and abnormal human plasma samples.
Conclusions:
- The developed ultrasonic method provides a reliable and objective approach for PT measurement.
- This technique holds potential for improved diagnostic capabilities in coagulation testing.
- Offers a viable alternative to conventional methods for assessing prothrombin time.