Method for X-ray marker localization in 3D space in the presence of motion
US8180130B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30204
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and system of determining a radial distance (R), an angular position (φ), and an axial position (Z) of a marker identified in a sequence of projection images. A marker three-dimensional localization module (executable by the electronic processing unit) obtains a sequence of images based on image data generated by a scanner. Each image in the sequence of images represents an angle of rotation by the scanner and includes a marker point position. The behavior of first values and second values of the marker point positions are analyzed through the sequence of images to determine the radial distance of the marker, the angular position of the marker, and the axial position of the marker allowing for rapidly detecting and localizing external markers placed on a patient in projection images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.