Ultrasonic measuring system
US4459853A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1982 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Mar 31, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A probe is provided which comprises a plurality of ultrasonic transducer elements, and is so arranged as to be capable of simultaneously transmitting and receiving ultrasonic beams of plural frequencies. Means is provided for changing the shapes of the effective acoustic field of the ultrasonic beams of each a predetermined number of frequencies by selectively operating the ultrasonic transducer elements or interchanging transducers. The shapes of the effective acoustic fields of the ultrasonic beams of the plural frequencies are made substantially coincident in accordance with the range of distance from the probe. Thereby, the measuring of the tissue or the like with coincident shaped beams of plural frequencies can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.