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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Shung, K.K. Kuo, I.Y. Flenniken, R.R. Cloutier, G. |
| Copyright Year | 1990 |
| Description | Author affiliation: Pennsylvania State Univ., University Park, PA, USA (Shung, K.K.; Kuo, I.Y.; Flenniken, R.R.; Cloutier, G.) |
| Abstract | It was demonstrated in a previous work (see IEEE Ultras. Sym. Proc., vol.2, pp.907-910, 1989) that change in ultrasonic attenuation of a flowing fluid as a function of time following a bolus injection of a gaseous ultrasonic contrast agent can be used to derive mean flow rate based upon the indicator dilution principle and that flow profile can be estimated using a real-time B-scanner from images of the agent. Here, results are presented to show that ultrasonic contrast agents may also be useful for time domain blood flow estimation via cross-correlation or a dual-probe approach. Two different approaches of time domain contrast ultrasonic flowmetry were studied using a mock flow loop: (1) velocity estimation using an optical correlator from recorded video ultrasonic images, and (2) velocity estimation using a two-probe arrangement from cross correlation of RF signals. Both methods use bolus injection of a contrast agent upstream from the monitoring site. |
| Starting Page | 1545 |
| Ending Page | 1548 |
| File Size | 246364 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/ULTSYM.1990.171626 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1990-12-04 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Blood flow Reservoirs Attenuation Monitoring Pumps Optical scattering Frequency estimation Biomedical engineering State estimation Radiography |
| Content Type | Text |
| Resource Type | Article |
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