Dynamic array aperture and focus control for ultrasonic imaging systems
US4180790A · kind A · utility
71Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1977 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Dec 27, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/345
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A B-scan ultrasonic imager such as a single-sector scanner has a dynamic aperture and focus control to attain improved lateral resolution especially at ranges less than the maximum array aperture. As the range from which echoes are being received propagates out, the array aperture during each echo reception period is increased by steps by switching in more elements of the total transducer array. At least one adjustment of receiving channel time delays is made to dynamically focus the echoes at different focal points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.