Ultrasonic diagnostic apparatus capable of acquiring high quality image by correcting phase distortion contained in ultrasonic pulses
US5348013A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1991 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Aug 28, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52049
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an ultrasonic diagnostic apparatus, ultrasonic propagation time differences contained in echo signals reflected from a biological body under medical examination are corrected by comprising: a quadrature phase detecting unit for quadrature-phase-detecting the echo signals derived from an ultrasonic transducer probe to obtain as phase data a quadrature signal component and an in-phase signal component; a delay-time correcting value calculating unit for calculating at least one of delay-time correcting values used for the energizing signals and the echo signals based upon both of the quadrature signal component and in-phase signal component; and, a delay controlling unit for controlling at least one of delay time data previously given to the energizing signals anti echo signals based upon one of calculated delay-time correcting values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.