Angiographic image acquisition system and method with automatic shutter adaptation for yielding a reduced field of view covering a segmented target structure or lesion for decreasing X-radiation dose in minimally invasive X-ray-guided interventions
US9280837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2009 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Aug 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H40/63
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention refers to an angiographic image acquisition system and method which can beneficially be used in the scope of minimally invasive image-guided interventions. In particular, the present invention relates to a system and method for graphically visualizing a pre-interventionally virtual 3D representation of a patient's coronary artery tree's vessel segments in a region of interest of a patient's cardiovascular system to be three-dimensionally reconstructed. Optionally, this 3D representation can then be fused with an intraoperatively acquired fluoroscopic 2D live image of an interventional tool. According to the present invention, said method comprises the steps of subjecting the image data set of the 3D representation associated with the precalculated optimal viewing angle to a 3D segmentation algorithm (S4) in order to find the contours of a target structure or lesion to be examined and interventionally treated within a region of interest and automatically adjusting (S5) a collimator wedge position and/or aperture of a shutter mechanism used for collimating an X-ray beam emitted by an X-ray source of a C-arm-based 3D rotational angiography device or rotational ga…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.