Tc-99m Sulfur Colloid Scintigraphy for Detecting Perigraft Flow Following Endovascular Aortic Aneurysm Repair: A Feasibility Study
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd., St. Louis, MO 63110 (United States)
- Department of Surgery, Washington University School of Medicine, 5103 Queeny Tower, 1 Barnes-Jewish Hospital Plaza, St. Louis, MO 63110 (United States)
Purpose: To determine if scintigraphy with Tc-99m sulfur colloid can be used to detect perigraft flow after stent-graft repair of abdominal aortic aneurysm (AAA). Methods: Twenty-three men and two women aged 56-84 years (mean 71 years) underwent endoluminal AAA repair as part of the EVT Phase II trial [EVT = Endovascular Technologies (Menlo Park, CA, USA)]. Aneurysm size averaged 5.4 cm (range 3-8 cm). Sixteen bifurcated, seven tube, and two aorto-uniiliac grafts were placed. Two days after stent-graft placement, patients underwent both contrast-enhanced computed tomography (CT), including delayed views, and Tc-99m sulfur colloid scintigraphy. Results: Perigraft flow was found in only one patient at completion of angiography. Four additional patients had perigraft flow, discovered during their postoperative follow-up CT. Four patients had leaks at an attachment site and one had retrograde branch flow. Tc-99m sulfur colloid scintigraphy failed to diagnose any of the five leaks prospectively. In two of these patients, however, some abnormal paraaortic activity was noted in retrospect. Conclusion: Tc-99m sulfur colloid scintigraphy was unable to demonstrate endoleak with either rapid flow (attachment site leak) or slow filling (branch flow)
- OSTI ID:
- 21080251
- Journal Information:
- Cardiovascular and Interventional Radiology, Vol. 22, Issue 6; Other Information: DOI: 10.1007/s002709900430; Copyright (c) 1999 Springer-Verlag New York Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 0174-1551
- Country of Publication:
- United States
- Language:
- English
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