发明名称 |
DEPTH DISAMBIGUATION OF INTERVENTIONAL INSTRUMENTS FROM A SINGLE X-RAY PROJECTION IMAGE AND ITS CALIBRATION |
摘要 |
X-ray images are projective, meaning that the 3D geometry is flattened along projection lines going from the source to the detector. In particular procedures, such as mapping or ablation, the interventional instrument lies on the wall of the organ. Using a 3D segmentation of this organ registered to the x-ray, the instrument necessarily lies on the intersection of this surface with its projection line. The line and the surface typically intersect with a segmentation surface at a discrete number of points (typically 2 for shapes such as the anterior of the LA). One then has just to disambiguate between these different possible locations to determine the exact location of the instrument. In this invention, we propose to use the apparent width of the instrument measured in x-ray images to accomplish this task. |
申请公布号 |
EP2477548(A1) |
申请公布日期 |
2012.07.25 |
申请号 |
EP20100760061 |
申请日期 |
2010.09.08 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
CATHIER, PASCAL;GOGIN, NICOLAAS PIERRE BRUNO;FLORENT, RAOUL |
分类号 |
A61B6/12 |
主分类号 |
A61B6/12 |
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