Ultrasonic systems and methods for contrast agent concentration measurement
US6423007B2 · kind B2 · utility
112Cited by
15References
6Claims
0Family size
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Key dates
| Filing date | Dec 11, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Dec 11, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/899
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The concentration and/or radii of a contrast agent in a fluid can be estimated by acquiring ultrasound spectral data, performing spectral analysis to generate a linear estimation of the power spectrum, and correlating at least one spectral parameter to a predetermined distribution function for the contrast agent. If the mean radius squared of particles is known, then the concentration of contrast agent particles can be calculated. If the concentration is constant, then relative variations in mean radius squared can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.