Intra-operative 3-D reconstruction of bone cement boli using X-rays
US7596254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2006 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Mar 9, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/564
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides method of generating a 3-D image of at least one cement bolus in relation to a bone comprising acquiring a plurality of fluoroscopic images of the bolus during or after a bone cement injection procedure. The method further comprises registering each fluoroscopic image with a CT scan image of the bone. Additionally, the method comprises outlining the bolus in each fluoroscopic image to generate a plurality of silhouettes of the bolus. The method also comprises projecting the silhouettes on to the CT scan image to generate a plurality of back-projections. Moreover, the method comprises identifying a plurality of bolus voxels to generate the 3-D image of the bolus, wherein each bolus voxel comprises an intersection of at least two back-projections. Furthermore, a method for intra-operative imaging of at least one bolus of bone cement during a bone cement injection procedure is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.