Body imaging technique
US4395909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1981 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Feb 23, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8977
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An array of acoustic receiving transducers is placed next to the body to be imaged. Acoustic energy is initially projected through the body, picked up by these receiving transducers, and processed to determine any time domain deviations which exist in the paths actually followed by that energy from those paths which would have been followed if the body were substantially homogeneous and the transducer array substantially fixed. Further acoustic energy is also picked-up by the transducers, after reflection within the body to be imaged. The image of any given point within the body is then formed by selecting from each transducer output signal that portion which corresponds to the image forming energy emanating from that point, as corrected in accordance with the previously determined deviations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.