Ultrasonic image reconstruction methods and apparatus
US4328707A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1979 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Jun 18, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/892
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Reconstruction of two-dimensional distribution of attenuation coefficients or sound velocities in a cross-sectional plane of an object is achieved by carrying out a plurality of measurements of absorption or of flight time with ultrasound bursts directed by elementary transmitting probes along several different incidences in the sectional plane. Switching between successive measurements is carried out by electronic scanning, without movement of the individual probes. Focusing of the burst energy transmitted by a group of probes is achieved by applying a same electrical signal to the probes with appropriate delays. The secured signals are stored and, after completion of the scanning, they are combined for computation of the distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.