Method and apparatus for coherence filtering of ultrasound images
US5910115A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Sep 22, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for improving medical ultrasound images employs data-dependent filtering. A quantity, called the coherence factor, is calculated for each pixel in the image. The coherence factor is defined to be the ratio of two quantities: the amplitude of the receive signals summed coherently and the amplitude of the receive signals summed incoherently. The coherence data is stored in buffer memory and is optionally spatially filtered and mapped. The amplitude data is concurrently acquired and stored in buffer memory. The system can be selectively operated to display the coherence information alone, the amplitude information alone, or a combination of the coherence and amplitude information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.