Apparatus for providing markers on an image, for use in conjunction with C-arm calibration apparatus
US6044132A · kind A · utility
102Cited by
3References
3Claims
0Family size
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Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S378/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for providing markers on an image, for use in conjunction with C-arm calibration apparatus for 3D reconstruction in an imaging system, comprises a plurality of radiation transparent planes intersecting at a line; and radiation opaque markers disposed on said transparent planes and arranged in respective patterns such that detection of coplanar markers on an image is possible without ambiguity even though said patterns be superimposed on a radiographic images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.