中文摘要：

目的 探讨正常汉族成人内囊的影像解剖。方法 选择健康汉族成人1000名（2000侧），按年龄18-30、31-40、41-50、51-60、61-80岁分为5组，每组男、女各100名。所有受试者均行三维（3D）磁化强度预备梯度回波序列T1WI，应用3D分析软件（Midobl）手工勾画出各个解剖值，软件自动计算出其解剖参数值。 结果 左、右侧内囊前肢前后径测量值为（16.93±1.67）mm和（16.60±1.72）mm，左、右侧内囊后肢前后径测量值为（28.42±1.92）mm和（27.68±1.81）mm。 左、右侧内囊前肢左右径测量值分别为（11.25±1.52）mm及（11.10±1.53）mm，左、右侧内囊后肢左右径测量值分别为（20.10±2.33）mm及（19.44±2.17）mm。 标准轴面上，左、右侧内囊前后肢之间夹角分别为（125.66±2.38）°及（126.01±34.11）°。 结论 高分辨率MRI能提供较为精确的内囊图像及测量数据，本实验提供了中国汉族正常成人内囊的参考值范围。

英文摘要：

Objective To study the anatomy characteristics of the internal capsule in the normal adults of Han nationality. Methods One thousand （2000 cerebral hemispheres） healthy Chinese Han adults were divided into 18-30,31-40,41-50,51-60,61-80 years old age groups, 100 males and 100 females per group.All the subjects underwent 1.5T MR scans using T1 weighted three-dimensional magnetization prepared rapid acquisition gradient echo sequence,and using 3D analysis software （Midobl） manual lays out the various anatomical value, the software automatically calculates its anatomical parameter values. Results 1. The anteroposterior diameters of left and right anterior limbs were （16.93±1.67） mm and （16.60±1.72） mm,left and right posterior limbs were （28.42±1.92） mm and （27.68±1.81） mm. 2. The lateral dimensions of left and right anterior limb were （11.25±1.52） mm and （11.10±1.53） mm and that of the left and right posterior limb were （20.10±2.33） mm and （19.44±2.17） mm. 3. The standard axial plane, the angle between the anterior limb and posterior limb of left and right internal capsule respectively were （125.66±2.38）°, （126.01±34.11）°. Conclusion High-resolution MRI can provide more precise images of the internal capsule and measurement data. This study provides reference ranges of the internal capsule in normal adults of Chinese Han.