Ultrasonograph
US8167806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2007 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Dec 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/5202
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonograph capable of generating a transmission beam having a uniform width over a wide range in an ultrasonic wave propagation direction is provided. A weighted mean value of a plurality of transmission delay time values corresponding to focal lengths of transmission pulse waves set in the ultrasonic wave propagation direction is calculated for each element constituting a transmission aperture and used as the delay time for the element when waves are transmitted. As the weight used for obtaining the weighted mean value, a transmission effective aperture width according to each transmission focal length is selected, and a weight in the direction of the transmit aperture realizing the width is calculated and is used in a focal length direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.