Ultrasonic diagnostic apparatus
US6620102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jun 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52049
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic diagnostic apparatus in which the distortion of the received wave signal due to the ununiformity of the interior of an human body can be reduced accurately with a small circuit scale and an ultrasonic image of high resolution can be produced. The apparatus comprises a probe including an arrangement of elements for transmitting and receiving ultrasonic pulses to and from the interior of a subject, delay means for delaying the wave signal received from each element of the probe, and a plurality of adder means connected in series to the output of the delay means for adding the output signal of the preceding stages thereby to form an ultrasonic beam. The apparatus further comprises correlation means for calculating the correlation of two or more output signals of any of the adder means, and delay correcting means for estimating as many delay correction amounts as the input signals to the delay means from the time difference between adjacent signals generated from the correlation means thereby to correct the delay time of the received wave signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.