【摘要】 目的　定量分析正常成人大脑不同部位白质纤维各向异性所存在的差异。方法　测量52 名正常志愿者大脑白质纤维不同部位的FA值和ADC值,测量的部位有:外囊、内囊前肢、内囊后肢、胼胝体膝部和胼胝体压部。结果　FA值以胼胝体压部为最高是0.893±0.0645。统计分析大脑白质各部位间FA值的差别均有统计学意义(P<0.01)。结论　FA值可定量分析大脑不同部位的白质纤维的各向异性程度。更多还原

【Abstract】 Objective To quantitatively analyze the difference of anisotropy of the different cerebral white matter fiber. Methods A total of 52 healthy adult volunteers were studied using MR diffusion tensor imaging. The FA values and ADC values were measured. The ROIs were placed in external capsule, anterior limb of the internal capsule, posterior limb of the internal capsule, genu of corpus callosum, splenium of corpus callosum. Results The FA value of the splenium of the corpus callosum was the highest(0.893±0.0645). There was statistical difference of FA value between the ROIs of this study( P <0.01).Conclusion FA value can be used to quantitatively analyze the anisotropy of different cerebral white matter fiber.更多还原