Method for detecting the three-dimensional position of a medical examination instrument introduced into a body region, particularly of a catheter introduced into a vessel
US7050844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2002 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Jul 7, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4441
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a method for detecting the three-dimensional position of a medical examination instrument introduced into an examination region of a subject and an apparatus including a C-arm system for registering radiation images, two-dimensional angiography projection images of the examination region are registered for later three-dimensional volume reconstruction of the examination region. After introduction of the instrument, at least one two-dimensional projection image pair of the examination region with image planes residing at an angle relative to one another is registered. The spatial coordinates of a selected point of the instrument shown in the projection images are identified in a common coordinate system for the angiography projection images and the projection images. Two-dimensional projection image pairs are registered in succession for the continuous presentation of the selected point in the display of the aforementioned volume reconstruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.