Ultrasonic diagnosis apparatus including a phase difference computing unit
US6059730A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To achieve a high resolution, by modifying a delay time distribution of received waves with correlation computations between signals from adjacent elements and by removing influences of inhomogeneities in a living body with a simple computing circuit for correlation factors. A time delay unit 2 for delaying receiving signals from a probe 1, an adder unit 3 for adding outputs of the time delay unit 2 and forming ultrasonic beam, a phase difference computing unit 5 for computing phase differences between signals and a correlation factor computing unit 6 for computing correlation factors are provided, the outputs of the correlation factor computing unit 6 are compared with values of a correlation factor storage unit 8 by a correlation factor comparing unit 9, and when the former is larger than the latter, the outputs of the phase difference computing unit 5 and the outputs of the correlation factor computing unit 6 are respectively stored in a phase difference storage unit 7 and the correlation factor storage unit 8, and at the moment when all of the phase difference computations have been completed, the time delay unit 2 is controlled by making use of the value stored in the phase di…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.