目的 基于中央前回兴趣区的弥散张量成像(DTI)纤维束与内囊重建模型，探讨中央前回中不同走行纤维与基底核解剖位置的可视化效果。方法  采用弥散张量体积(DTV)数据1套，利用3DSlicer 5. 6. 2软件对其进行可视化并导出网格模型。采用同一次扫描的T1WI数据，利用3DSlicer重建出基底核并导出网格模型。将上述模型导入至DTIANALYSIS 1.51软件中进行可视化。通过调节RGB分量阈值，对纤维束进行筛选，分别得到以左右、前后与上下走行为主的纤维束，观察上述纤维束与基底核的解剖关系。结果  发自中央前回的纤维束中左右走行为主的纤维束分布于内侧部与下部，走行于基底核上方与外侧；前后走行为主的纤维束分布于外侧部，走行于基底核的外侧；上下走行为主的纤维束分布于中央前回的上部、中部，部分纤维行至下丘脑方向，在胼胝体与桥脑腹侧均有交叉，走行于豆状核与背侧丘脑间隙后部。结论  基于DTI中RGB分量，可筛选出中央前回中不同走行方向的纤维，显示其与基底核的解剖位置关系。

Objective To explore the visualization effect of different walking fibers and anatomical positions of the basal nucleus in the postcentral gyrus based on the diffusion tensor imaging (DTI) fiber bundle of the precentral gyrus and internal capsule reconstruction model.  Methods  A set of diffusion tensor volume (DTV) data was used to visualize and export a mesh model by a 3DSlicense 5. 6. 2 software. The basal nucleus were reconstructed by 3DSlicense through T1W1 data from the same scan, and exported the mesh model, and thus imported the above model into DTIANALYSIS 1.51 software for visualization. By adjusting the RGB component threshold, the fiber bundles were screened to obtain fiber bundles that mainly run left and right, front and back, and up and down. The anatomical relationship between the fiber bundles and the basal nucleus was observed.  Results  The fiber bundles originating from the precentral gyrus were mainly distributed in the inner and lower parts, and run above and outside the basal nucleus; The fiber bundles that mainly run forward and backward are distributed on the outer side and run on the outer side of the basal nucleus; The fiber bundles that mainly run up and down were distributed in the upper and middle parts of the precentral gyrus, with some fibers running towards the hypothalamus. They intersect in the corpus callosum and ventral pons, and run along the posterior part of the space between the lentiform nucleus and the dorsal thalamus.   Conclusion  Based on the RGB components in DTI, fibers with different walking directions in the precentral gyrus can be screened to display their anatomical position relationship with the basal ganglia.