Techniques for calculating ultrasonic integrated backscatter using frequency or time domain techniques
US4873984A · kind A · utility
10Cited by
6References
7Claims
0Family size
Assignee
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Key dates
| Filing date | May 30, 1986 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | May 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52033
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for deriving signals indicating a condition of tissue within an area by launching spaced supersonic pulses into a body under examination and detecting the power of supersonic waves scattered from locations along a plurality of known paths. Gain control elements are provided for compensating for changes in amplitude of the scattered supersonic waves resulting from their passage through blood or tissue, the increased attenuation with frequency of the spectrum of the launched pulses and the focussing of the launched pulses. Compensation for ring-down and the attenuation of the chest wall is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.