| 摘要 |
A branch vessel in a human patient is located or mapped using in vivo tracked field sensors where in one variation the sensor positions can be located by determining the positions of the sensors relative to a plurality of magnetic field sources of known location. This approach is used, for example, in locating the opening in a renal artery and positioning the proximal end of the AAA stent-graft adjacent to the opening. In another example, the sensors are tracked along the inner wall of an aneurysm and the acquired sensor location data processed to map the contour of the aneurysm to size a prostheses for spanning the aneurysm. The portions of the vessel adjacent the aneurysm also can be mapped. In a further embodiment, an in vivo sensor is positioned in a deployed prosthesis to create a reference for a prosthetic member having a sensor to track to during cannulation of the deployed prosthesis with the prosthetic member. |
