Beat frequency ultrasonic microsphere contrast agent detection system
US5601086A · kind A · utility
97Cited by
12References
11Claims
0Family size
Assignee
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Key dates
| Filing date | May 12, 1995 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8952
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for and method of detecting and measuring concentrations of an ultrasonically-reflective microsphere contrast agent involving detecting non-linear sum and difference beat frequencies produced by the microspheres when two impinging signals with non-identical frequencies are combined by mixing. These beat frequencies can be used for a variety of applications such as detecting the presence of and measuring the flow rates of biological fluids and industrial liquids, including determining the concentration level of microspheres in the myocardium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.