Method and apparatus for a geometric aberration transform in an adaptive focusing ultrasound beamformer system
US5551433A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1994 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Aug 5, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8918
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus are provided for storage and retrieval of measured aberration correction values used in adaptive focus ultrasound imaging. The aberration correction values, corresponding to an aberration region in an imaged subject, are measured at a transmit focal depth. The measured aberration correction values, typically delays, from a measurement depth are stored in a geometric aberration transform (GAT.TM.) table and transformed to aberration correction values at other focal depths for correcting the focus of both transmit and receive beamformers. The transformation is accomplished by using a geometric aberration transform (GAT.TM.) index table which retrieves one or more aberration correction values in the table for any desired depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.