Method for estimating and imaging of transverse displacements, transverse strains and strain ratios
US6270459A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | May 26, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/485
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed toward a new method that combines interpolation between neighboring A-lines with cross-correlation for high precision estimation of the transverse displacement. Due to this high precision lateral estimation, the method of the present invention can produce quality lateral-elastograms that display the lateral component of the strain tensor. These higher precision lateral displacement estimates also allow a finer correction for the lateral decorrelation that corrupts the axial estimation. The method of the present invention may be employed to divide the lateral-elastogram by the axial-elastogram on a pixel-by-pixel basis, in order to produce a new image that displays the distribution of Poisson's ratios in the tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.