| 摘要 |
Method for displaying a representation of the tip of a medical device located within a body region of interest of the body of a patient, on an image of the body region of interest, the image being acquired by an image detector of a moving imager, the method including the procedures of acquiring a medical positioning system (MPS) sensor image of an MPS sensor, determining a set of intrinsic and extrinsic parameters, determining two-dimensional optical coordinates of the tip of the medical device, superimposing the representation of the tip of the medical device, on the image of the body region of interest, and displaying the representation of the tip of the medical device superimposed on the image of the body region of interest, the MPS sensor image of the MPS sensor being acquired by the image detector, at a physical zoom setting of the image detector respective of the image, and at a selected image detector region of interest setting of the image detector, the MPS sensor being associated with an MPS, the MPS sensor responding to an electromagnetic field generated by an electromagnetic field generator, firmly coupled with a moving portion of the moving imager, the set of intrinsic and extrinsic parameters being determined according to sensor image coordinates of the MPS sensor image, in a two-dimensional optical coordinate system respective of the image detector, and according to non-real-time MPS coordinates of the MPS sensor, in an MPS coordinate system respective of the MPS, the two-dimensional optical coordinates of the tip of the medical device being determined according to the physical zoom setting, according to the set of intrinsic and extrinsic parameters, according to the selected image detector region of interest setting, and according to real-time MPS coordinates of an MPS sensor located at the tip of the medical device, the representation of the tip of the medical device, being superimposed on the image of the body region of interest, according to the two-dimensional optical coordinates. |
