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- W3031736367 abstract "ObjectiveTo study the feasibility and value of magnetic resonance diffusion tensor imaging (DTI) to monitor non-arteritic anterior ischemic optic neuropathy (NAION).MethodsThirty eight NAION patients (56 eyes) were divided into acute period in 17 eyes, progressive period in 16 eyes and chronic period in 23 eyes at the base of onset time. According to matching principle, 56 eyes in 38 normal controls (NCs) were enrolled. All the patients and NCs underwent MR and DTI scan. The raw data were processed by two experienced radiologists, mean diffusivity (MD), axial diffusivities (λ//), radial diffusivities (λ┴), fractional anisotropy (FA) and Length value were got. The independent sample t test was used for the parameter values between the NAION group and the NCs group. A single factor variance analysis was used to compare the parameters among different stages of NAION group.ResultsCompared to the NCs group, the values of FA and Length in NAION group were reduced [0.20±0.11 vs 0.31±0.12, (5.85±0.92) vs (65.11±6.89) mm], and the differences were statistically significant (t=-4.28, -5.25; P<0.05). The values of MD and λ┴ were increased [(0.16±0.04)×10-3 vs (0.10±0.04)×10-3 mm2/s, (0.16±0.05)×10-3 vs (0.09±0.03)×10-3 mm2/s] in NAION group and the differences were statistically significant (t=6.83, 7.10; P<0.05). The value of FA and Length in acute period, progressive period and chronic period of the NAION group decreased differently compared to the NCs group. At the same time, the value of MD value and λ┴ in the three periods of the NAION group increased compared to the NCs groupand the differences were statistically significant (P<0.05). The value of FA between the acute period, the progressive period, and the chronic period of NAION group were statistically signficant (F=10.88, P<0.05). However, no significant differences were found in the values of MD, λ┴ and Length of the NAION group (F=0.23, 0.64, 0.33, 1.38; P=0.79, 0.54, 0.72, 0.27).ConclusionThe parameters of DTI can be used to monitor the damage of optic nerve and development in NAION.Key words: Optic nerve diseases; Magnetic resonance imaging; Diffusion tensor imaging" @default.
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- W3031736367 date "2018-10-10" @default.
- W3031736367 modified "2023-09-26" @default.
- W3031736367 title "Study of MR diffusion tensor imaging to monitor the damage degree of optic nerve in non-arteritic anterior ischemic optic neuropathy" @default.
- W3031736367 doi "https://doi.org/10.3760/cma.j.issn.1005-1201.2018.10.008" @default.
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