Anterior visual pathway assessment by magnetic resonance imaging in normal-pressure glaucoma
Abstract. Purpose: To analyze the axonal architecture of the optic nerve in patients with normal-pressure glaucoma and determine whether these parameters correlate with the disease severity. Methods: Using magnetic resonance (MRI) imaging (1.5-Tesla unit) and diffusion tensor (DT) MRI, we measured t...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 April 2012
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| In: |
Acta ophthalmologica
Year: 2012, Jahrgang: 90, Heft: 4, Pages: e295-e302 |
| ISSN: | 1755-3768 |
| DOI: | 10.1111/j.1755-3768.2011.02346.x |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1111/j.1755-3768.2011.02346.x Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1755-3768.2011.02346.x 
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| Verfasserangaben: | Ya Q. Zhang, Jing Li, Liang Xu, Li Zhang, Zhen C. Wang, Hua Yang, Chang X. Chen, Xi S. Wu and Jost B. Jonas |
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| 520 | |a Abstract. Purpose: To analyze the axonal architecture of the optic nerve in patients with normal-pressure glaucoma and determine whether these parameters correlate with the disease severity. Methods: Using magnetic resonance (MRI) imaging (1.5-Tesla unit) and diffusion tensor (DT) MRI, we measured the optic nerve diameter, optic chiasm height and lateral geniculate nucleus (LGN) volume in patients with normal-pressure glaucoma and an age-matched control group. The retinal nerve fibre layer thickness (RNFL) was determined by optical coherence tomography (OCT). Results: The study included 30 patients with normal-pressure glaucoma and 30 age-matched control subjects. Optic nerve diameter (p < 0.001), optic chiasm height (p < 0.001) and LGN volume (p = 0.02) were significantly smaller in the glaucoma group than in the control group and were significantly correlated with RNFL thickness and perimetric loss. In the control group, the parameters significantly (p < 0.05) decreased with age. The DT-MRI-derived fractional anisotropy for the optic nerve was significantly lower (p < 0.001), and the DT-MRI-derived mean diffusivity (p < 0.001), radial diffusivity (λ⊥; p < 0.001) and axial diffusivity (λ||; p = 0.009) for the optic nerve were significantly higher in the glaucoma group and significantly correlated with RNFL thickness and mean perimetric defect. Conclusions: Patients with normal-pressure glaucoma show an age-adjusted reduced optic nerve diameter, optic chiasm height and LGN volume as measured by MRI, correlating with a reduced RNFL thickness and increased perimetric loss. MRI may be applied to examine the optic nerve in patients with glaucoma with opaque optic media. | ||
| 650 | 4 | |a glaucoma | |
| 650 | 4 | |a glaucomatous optic nerve damage | |
| 650 | 4 | |a glaucomatous optic neuropathy | |
| 650 | 4 | |a lateral geniculate nucleus | |
| 650 | 4 | |a normal-pressure glaucoma | |
| 650 | 4 | |a optic chiasm | |
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