Postoperative evaluation of complex aortovisceral and aortorenal reconstructions by magnetic resonance angiography

Academic Radiology
Nicholas FidelmanRoy L Gordon

Abstract

To assess the ability of magnetic resonance angiography (MRA) to evaluate complex vascular bypass reconstructions of the abdominal aorta and its major branches in the postoperative period. Thirteen patients with bypass grafts connecting the aorta to visceral, renal, and lower limb inflow vessels were evaluated with MRA. Three of these patients were also studied with digital subtraction angiography soon after MRA was completed. MRA was evaluated for its ability to detect the grafts and to determine the degree of stenosis in the graft conduit or at the anastomoses to native vessels. Detection of graft conduits and anastomotic sites by MRA was 100% and 99%, respectively. Comparison with digital subtraction angiography in a subset of the patients showed a 100% agreement between the two modalities in their description of stenotic disease in graft conduits and 95% agreement in stenosis characterization at graft anastomotic sites. MRA of complex aortic reconstructions with bypass grafts to its major abdominal branches arteries accurately describes the resulting complicated vascular anatomy and likely has a high degree of correlation to digital subtraction angiography in describing the disease within the bypass grafts.

References

Jun 17, 1999·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·P BrennerB Reichart
Sep 30, 2003·Journal of Vascular and Interventional Radiology : JVIR·Christian LoeweSiegfried A Thurnher

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