Apparatus for measuring blood flow speed using an ultrasonic beam
US4744367A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1985 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Dec 23, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8977
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic diagnosis apparatus comprises a probe for transmitting an ultrasonic beam toward a body having a blood vessel therein and a plurality of receiver circuits corresponding to sampling points of the body in a direction approximately perpendicular to the beam to produce respective intensities of reflected waves from the sampling points. A distribution of the reflected-wave intensities from the receiver circuits is measured at a predetermined interval of time. A shift between two successive intensity distributions thus measured is detected by a correlator, thereby determining a blood flow speed, in the blood vessel of the body, in the direction approximately perpendicular to the beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.