Method and device for transmission of a wide-beam in an ultrasonic diagnostic system
US8057393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/486
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and device for transmission of wide beam in ultrasonic diagnostic systems is disclosed. The method comprises: dividing an aperture of an ultrasonic probe into N sub-apertures; laterally dividing a focus into N sub-focuses, wherein the N sub-apertures correspond to the N sub-focuses respectively, each sub-aperture has M array elements which all focus on a sub-focus corresponding to said sub-aperture; and N and M are integers larger than 2; exciting the N sub-apertures by a pulse generator, so as to obtain a laterally stretched transmit acoustic filed, wherein the transmit acoustic fields of the N sub-apertures focus on the corresponding sub-focuses respectively; and accumulating the acoustic fields of the sub-apertures to form an acoustic field of a wide beam covering acoustic fields of all receive lines. The present invention makes it possible for the system to transmit wide beams covering all receive lines, by dividing the aperture of the probe into a plurality of sub-apertures and accumulating the acoustic fields of the sub-apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.