Evaluation of abdominal aortic aneurysm for stent-graft placement: comparison of gadolinium-enhanced MR angiography versus helical CT angiography and digital subtraction angiography
| Autor: | F. Winkelbauer, P Polterauer, G Kretschmer, Siegfried Thurnher, Majda M. Thurnher, R. Dorffner, Johannes Lammer |
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| Rok vydání: | 1997 |
| Předmět: |
Adult
Male medicine.medical_specialty medicine.medical_treatment Iliac Artery Sensitivity and Specificity Blood Vessel Prosthesis Implantation Renal Artery Aneurysm medicine.artery medicine Humans Radiology Nuclear Medicine and imaging Aorta Abdominal cardiovascular diseases medicine.diagnostic_test business.industry Vascular disease Abdominal aorta Angiography Digital Subtraction Stent Magnetic resonance imaging Digital subtraction angiography Middle Aged medicine.disease Abdominal aortic aneurysm Mesenteric Arteries Angiography cardiovascular system Female Stents Radiology Tomography X-Ray Computed business Magnetic Resonance Angiography Aortic Aneurysm Abdominal |
| Zdroj: | Radiology. 205:341-352 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/radiology.205.2.9356613 |
| Popis: | To determine whether magnetic resonance (MR) angiography can be used alone to evaluate abdominal aortic aneurysms (AAAs) for endovascular placement of stent grafts.Sixty-one patients with AAAs underwent gadolinium-enhanced MR angiography of the abdominal aorta and pelvic arteries. Measurements of the size and extent of the AAAs were compared with helical computed tomographic (CT) and digital subtraction angiographic measurements; 95% confidence intervals for the differences in the means were determined.Because of the larger field of view, MR angiography was superior to CT angiography in assessing visceral iliac artery disease. Both modalities were equal in evaluating the proximal extent of the AAA (mean difference, -0.16 mm; 95% CI, -0.31, 0.64) and in measuring all aortic dimensions (e.g., mean difference in the proximal neck diameter, -0.74 mm; 95% CI, -0.98, -0.49). MR angiography was inferior to CT angiography in depicting accessory renal arteries (seven of 12) and in grading renal artery stenoses (sensitivity, 100% [95% CI, 0.90, 1.00]; specificity, 84% [95% CI, 0.74, 0.91]).Gadolinium-enhanced MR angiography is a fast, reliable means of providing all the information relevant to the preoperative assessment of endovascular aortic stent-graft placement. |
| Databáze: | OpenAIRE |
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