Optimal fast T2-weighted magnetic resonance microscopy imaging of the eye and its clinical application.
J Magn Reson Imaging
; 31(5): 1210-4, 2010 May.
Article
en En
| MEDLINE
| ID: mdl-20432358
ABSTRACT
PURPOSE:
To compare a half-Fourier single-shot rapid acquisition with relaxation enhancement (RARE) sequence with a balanced steady-state free precession (b-SSFP) sequence in the evaluation of the eye using magnetic resonance (MR) microscopy imaging and to clarify the usefulness of RARE microscopy imaging in evaluating nonoperative glaucoma patients and patients who have undergone surgery for glaucoma or cataract. MATERIALS ANDMETHODS:
One-mm and 2-mm slice thickness images of RARE sequence and b-SSFP sequence using a 1.5 T MR unit and a 23-mm microscopy coil were obtained in eight healthy volunteers. The signal-to-noise (S/N) ratio of aqueous humor in the anterior chamber was measured quantitatively and visualization of the anterior chamber anatomy was assessed qualitatively. Furthermore, we evaluated 21 glaucoma patients (including six postoperative patients) and four patients after cataract surgery with 2-mm slice thickness RARE MRI.RESULTS:
The 2-mm slice thickness RARE imaging had a significantly greater S/N ratio than the 1-mm slice thickness RARE imaging (P < 0.05) and acquired the best image quality among the four types of images (P < 0.01). Additionally, 2-mm slice thickness RARE microscopy imaging could depict anterior chamber anatomy of glaucoma eyes and eyes after cataract surgery.CONCLUSION:
We believe that optimal fast T2-weighted MR microimaging might become a useful ophthalmologic examination technique.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Oftalmoscopía
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Catarata
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Reconocimiento de Normas Patrones Automatizadas
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Imagen por Resonancia Magnética
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Aumento de la Imagen
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Glaucoma
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Microscopía
Tipo de estudio:
Diagnostic_studies
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
J Magn Reson Imaging
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2010
Tipo del documento:
Article
País de afiliación:
Japón