A mathematical model for the assessment of hemodynamic parameters using quantitative contrast echocardiography
| Autor: | Sherry Steinmetz, Karl Q. Schwarz, Xucai Chen, Daniel Phillips, Reinhard Schlief |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Cardiac output
Phantoms Imaging Estimation theory business.industry media_common.quotation_subject Ultrasound Hemodynamics Models Cardiovascular Biomedical Engineering Contrast Media Reproducibility of Results Image Enhancement Intensity (physics) Nonlinear Dynamics Echocardiography Calibration Humans Contrast (vision) Medicine Ultrasonic sensor business Quantitative analysis (chemistry) media_common Biomedical engineering |
| Zdroj: | IEEE Transactions on Biomedical Engineering. 45:754-765 |
| ISSN: | 0018-9294 |
| Popis: | A mathematical model for the assessment of hemodynamic parameters using quantitative echocardiography is presented. The method involves the intravenous injection of an ultrasonic echo contrast agent. The relative enhancement of the backscattered ultrasound intensity is measured as a function of time (the time-intensity curve). From this measurement, the volume flow rate (cardiac output) and the mixing volume are calculated. Relevant acoustic properties of the ultrasound contrast agent are discussed. An in vitro experiment is performed to corroborate the theory presented. |
| Databáze: | OpenAIRE |
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