Endovascular aortic repair of a postdissecting thoracoabdominal aneurysm using intraoperative fusion imaging.

Computer-aided imaging can aid complex endovascular repair of aortic dissections in locating the narrow true lumen and identifying perfusion of visceral vessels by the true and/or false lumen. Although these anatomic data are available for analysis during planning, they are not readily available during the procedure with conventional imaging systems. We report the use of "fusion imaging" to facilitate the treatment of a postdissection thoracoabdominal aneurysm. The preoperative computer tomographic angiograms were processed, and the true and the false lumens were individually color labeled. These data were then superimposed on the fluoroscopic images in order to facilitate deployment of a fenestrated endograft.