Elastography imaging modalities for characterizing properties of tissue
US7257244B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2004 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Feb 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30068
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image reconstruction algorithm begins with an initial acquisition of a preoperative imaging volume followed by a second imaging sequence subsequent to an applied deformation. A computational domain (model) is generated from the preoperative image series and boundary conditions are derived from a pre-post deformation comparison, as well as from information gathered from deformation source application (i.e., displacement and/or force). Using boundary conditions, a series of model-based image deformations is accomplished while varying model material properties. A calculation of a Jacobian matrix relating the change in regional mutual information is performed with respect to the change in material properties. Upon completion of this process, matrix regularization techniques are used to condition the system of equations and allow for inversion and subsequent delivery of model-property adjustments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.