Objective To observe the changes of visual pathway of central nervous system in patients with glaucoma.Methods Thirty-five subjects were enrolled in this prospective study. There were seven patients of chronic primary angle closure glaucoma with bilateral visual field defects, 12 patients of primary open angle glaucoma with bilateral visual field defects, and 16 normal subjects. GE Signa HD 1.5 T magnetic resonance scanners and head eight phased array were used. The mean fractional anisotropy (FA) and the mean average diffusion coefficient (DCavg) of white matter tracts in visual pathway of bilateral optic nerve, optic chiasma, bilateral optic tract，bilateral optic radiation were measured by diffusion tensor imaging, meanwhile the white matter tracts were reconstructed by fiber tracking system. The volumes of lateral geniculate body were measured by coronal proton density weighted magnetic resonance imaging.Results The differences of FA among bilateral optic nerve, optic chiasma, bilateral optic tract，bilateral optic radiation were statistically significant (F=25.985，20.626，12.262，22.399，21.708，24.994，22.774；P＜0.05). There was no difference of DCavg among bilateral optic nerve, optic chiasma, bilateral optic tract，bilateral optic radiation（F=2.097，2.178，0.530，0.983，0.608, 0.866, 1.504；P＞0.05）. The differences of volume of lateral geniculate body among three groups were statistically significant （F=18.631，17.274；P＜0.05）. Conclusion There is degeneration in visual pathway of central nervous system in patients with glaucoma.
摘要:目的:探讨超声与核素显像在评价干燥综合征(SS)腮腺受累情况中的价值和作用。方法:对65例SS病人分别进行超声和核素显像检查。结果:超声判为腮腺功能0级、I级、ⅡⅢ级、Ⅳ级的能力与核素显像判为正常(χ2=0.075,Pgt;0.05)、轻度(χ2=0.12,Pgt;0.05)、中度(χ2=0.27,Pgt;0.05)、重度(χ2=0.097,Pgt;0.05)受损的能力一致,差异无统计学意义;核素发现单纯摄取功能受损的超声多表现为不均匀型、单纯排泌功能受损的超声多表现为结节型、摄取和排泌功能均受损的超声多表现为纤维化型。结论:超声检查可作为SS患者腮腺受累情况评价的良好手段。Abstract: Objective: To quantitatively evaluate ultrasonography and radionuclide imaging in thediagnosis of parotid gland involvement in Sjogren syndrome (SS). Methods: Ultrasonography and radionuclide imaging were conducted on 65 cases with primary Sjogren syndrome. Results: There was no significant difference statistically between the ultrasonographic appearance of the parotid gland and radionuclide imaging (P gt;0. 05). Conclusion: As for diagnosis and evaluating the parotid gland of Sjogren syndrome, ultrasonography may be the useful choice.