Apparatus and method for detection and localization of a biopsy needle or similar surgical tool in a radiographic image
US5930329A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Sep 22, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B90/36
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for the detection and localization of a surgical tool in a radiographic image, including an image of a surgical device and an anatomical background image, includes the steps of generating a radiographic reference image, including an image of a surgical device and an anatomical background image and applying an oscillating movement to the device. The method further includes the steps of generating a number k of radiographic images during the oscillating movement; subtracting each image from the reference image, so as to generate a difference image; and deriving the mathematical intersection of all of the reference images, whereby a resulting image results including only the image of the device on the radiographic reference image and substantially without the anatomical background image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.