FIELD: physics, navigation.
SUBSTANCE: invention relates to navigating an interventional device. The system comprises: an X-ray image acquisition device; a processing unit; an interface; wherein the X-ray image acquisition device acquires two-dimensional (2D) X-ray image data in one projection geometry of a region of interest of the tubular structure; the processing unit is fulfilled with possibility to detect the interventional device in the 2D X-ray image; determines the 2D position of the interventional device in the 2D X-ray image; superimposes one 2D X-ray image with a previously acquired three-dimensional (3D) dataset of the region of interest; maps the determined 2D position of the interventional device to a position in the 3D dataset; extracts local 3D parameters at the position of the interventional device; and generates navigational information for the determined 3D position of the interventional device and the extracted local 3D parameters; the interface provides the navigational information to the user.
EFFECT: high accuracy of navigating an interventional device within the tubular structure of an object.
12 cl, 18 dwg
