Prospective evaluation of high-resolution MRI using gadofosveset for stent-graft planning: comparison with CT angiography in 30 patients.
AJR Am J Roentgenol
; 197(5): 1251-7, 2011 Nov.
Article
en En
| MEDLINE
| ID: mdl-22021522
ABSTRACT
OBJECTIVE:
The purpose of our study was to compare high-resolution gadofosveset-enhanced MR angiography (MRA) with the reference standard CT angiography (CTA) in planning endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms. SUBJECTS ANDMETHODS:
Thirty consecutive patients were included in this prospective study. CTA was performed routinely before EVAR for stent-graft implantation planning and selection. In addition, first-pass and, after a delay of 10 minutes, steady-state MRA were performed using the blood pool contrast agent gadofosveset for study purposes. Standard diameter and length parameters for stent-graft evaluation rendered from CTA and MRA were compared. According to the results of MRA measurements, stent-grafts were selected for each patient and compared with the device actually implanted. Image quality was assessed using subjective image quality parameters.RESULTS:
Diameter and length measurements showed small but significant differences (p < 0.001) between MRA and CTA. Stent-graft selection according to these measurements showed 100% concordance between both modalities. Subjective imaging parameters showed significantly better results for CTA compared with MRA (p < 0.001).CONCLUSION:
In this study, MRA using a blood pool contrast agent has shown the ability to provide reliable and exact measurements before EVAR, allowing noninvasive planning of the intervention despite lower image-quality and without the disadvantages of ionizing radiation and nephrotoxicity.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Compuestos Organometálicos
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Planificación de Atención al Paciente
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Angiografía
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Tomografía Computarizada por Rayos X
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Stents
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Aneurisma de la Aorta Abdominal
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Angiografía por Resonancia Magnética
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Medios de Contraste
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Implantación de Prótesis Vascular
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Gadolinio
Tipo de estudio:
Observational_studies
Límite:
Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
AJR Am J Roentgenol
Año:
2011
Tipo del documento:
Article
País de afiliación:
Austria