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. Author manuscript; available in PMC: 2009 May 5.
Published in final edited form as: Catheter Cardiovasc Interv. 2007 Nov 15;70(6):773–782. doi: 10.1002/ccd.21352

Fig. 5.

Fig. 5

Unsatisfactory registration during an iliac artery revascularization procedure. Panel A shows the misregistration of a contrast-enhanced MR angiogram with X-ray during XFM. Multiple fiducial markers are positioned on the abdominal skin. Panel B shows another patient with MR-derived arterial adventitial contours overlaid during recanalization of occlusive iliac in-stent restenosis. Both presumably reflect error introduced by nonrigid deformation and respiratory motion of the fiducial markers.