Evaluation of contrast-enhanced MR angiography in the follow-up of visceral arterial aneurysms after coil embolization.
Acta Radiol
; 54(5): 493-7, 2013 Jun.
Article
em En
| MEDLINE
| ID: mdl-23436827
ABSTRACT
BACKGROUND:
The placement of detachable coil has become the alternative method of treating visceral arterial aneurysms (VAAs). Imaging follow-up is necessary after coil embolization because of frequent incomplete occlusion.PURPOSE:
To compare contrast-enhanced magnetic resonance angiography (CE-MRA) at 3T with a reference standard of digital subtraction angiography (DSA) for the evaluation of VAAs after coil embolization. MATERIAL ANDMETHODS:
We treated 15 patients with VAA with coil embolization; eight had splenic artery aneurysms and seven had renal artery aneurysms. We packed the aneurysmal sac preserving native arterial circulation. For follow-up, all patients underwent CE-MRA at 3T and DSA. The results were classified according to coil occlusion Class 1, complete occlusion; Class 2, residual neck; Class 3, aneurysmal filling.RESULTS:
CE-MRA revealed 11 complete occlusions and four residual necks. DSA follow-up showed 12 complete occlusions and three residual necks. No aneurysmal filling occurred after treatment. Comparison of CE-MRA and DSA findings showed 93% agreement (14/15). CE-MRA allowed the detection of a residual neck in one misclassified case in which DSA showed occlusion. Coil-related artifacts were minimal and did not interfere with evaluation of the occlusion status of the VAAs.CONCLUSION:
CE-MRA at 3T provides high-quality images equivalent to DSA for the evaluation of VAAs after coil embolization. We suggest that CE-MRA at 3T might be used as the primary method for follow-up of VAAs after coil embolization.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Artéria Renal
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Artéria Esplênica
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Angiografia por Ressonância Magnética
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Embolização Terapêutica
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Aneurisma
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article