Method for localization of a biopsy needle or similar surgical tool in a radiographic image
US6055449A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Sep 22, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/3403
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for detection and localization of a surgical device in a radiographic image of the surgical device, includes the steps of: generating a radiographic image, including an image of a surgical device and an anatomical background image; moving the device rotatably through a plurality of positions corresponding to steps of an alignment method; generating a plurality of radiographic images corresponding to the plurality of positions, respectively; subtracting each image of the plurality of images from preceding images so as to generate a plurality of difference images; deriving the mathematical intersection of all of the plurality of difference images; and thereby obtaining a resulting image containing only an image of the device on the radiographic image without the anatomical background image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.