0.125 mm(3) spatial resolution steady-state MR angiography of the thighs with a blood pool contrast agent using the quadrature body coil only at 1.5 Tesla.
J Magn Reson Imaging
; 40(4): 996-1001, 2014 Oct.
Article
em En
| MEDLINE
| ID: mdl-24845363
ABSTRACT
PURPOSE:
To implement and evaluate high spatial resolution three-dimensional MR contrast-enhanced angiography (3D-CEMRA) of the thighs using a blood pool contrast agent (BPCA) using the quadrature body coil only in patients with peripheral arterial occlusive disease (PAOD) in cases receiver coils cannot be used at 1.5 Tesla (T). MATERIALS ANDMETHODS:
Nineteen patients (mean age 68.7 ± 11.2 years; range, 38-83 years) with known PAOD (Fontaine stages; III 16, IV 3) prospectively underwent 3D-CEMRA at 1.5T with a noninterpolated voxel size of 0.49 × 0.49 × 0.48 mm(3) . Digital subtraction angiography (DSA) was available for comparison in all patients. Two readers independently evaluated movement artifacts, overall image quality of 3D-CEMRA, and grade of stenosis as compared to DSA. SNR and CNR levels were quantified.RESULTS:
The 3D-CEMRA was successfully completed in all patients. Patient movement artifacts that affected stenosis grading occurred in 3/38 thighs. Overall image quality was rated excellent in 15/38, good in 12/38, and diagnostic in 8/38 thighs. Stenosis grading matched with that in DSA in 35/38 thighs. High SNR and CNR were measured in all vessels.CONCLUSION:
The 0.125 mm(3) spatial resolution 3D-CEMRA of the thighs with a BPCA is feasible using a quadrature body coil exclusively with excellent image quality despite long acquisition times. J. Magn. Reson. Imaging 2014;40996-1001. © 2014 Wiley Periodicals, Inc.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Compostos Organometálicos
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Arteriopatias Oclusivas
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Coxa da Perna
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Aumento da Imagem
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Angiografia por Ressonância Magnética
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Doença Arterial Periférica
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Gadolínio
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
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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:
J Magn Reson Imaging
Assunto da revista:
DIAGNOSTICO POR IMAGEM
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Alemanha