Objective: To explore the methods and appliaction value for self-constructing brainstem fiber bundles by neurosurgeon through 3D-Slicer software in neurosurgical preoperative planning. Methods: The DCIOM format imaging data of 31 patients with neurosurgical brainstem lesions were collected who admitted to Neurosurgery Department at the First Affiliated Hospital of Chongqing Medical University from June 2018 to May 2019 and imported into the 3D-Slicer software system. The neurosurgery specialists independently constructed the fiber bundles to generate two-dimensional Fraction Anisotropy maps, Directionally Encoded Color maps and three-dimensional fiber bundle tracing maps. Building a preopertive virtual pathological anatomical imaging system and understanding the three-dimensional pathological anatomical relationship between lesions and brain stem fiber bundles to develop an accurate surgical approach and simulate surgicalprocedures before surgery. Results: All cases were reconstructed by neurosurgeon, and the self-constructed 3D virtual images were used to develop the surgical plan. All the operations were successfully completed under the assistance of microsurgical techniques and neuroendoscopy while avoiding fiber bundles as much as possible, and the total or subtotal tumor was achieved without damage to the fiber bundle. After operation, the symptoms of new brainstem fiber bundle injury were mild. 31 patients were followed up 3 months after operation without obvious symptoms of brainstem fiber bundle injury, and 31 patients were followed up 6 months after operation without obvious symptoms of brainstem fiber bundle injury. Conclusions: Constructing brainstem fiber bundles by neurosurgeon can accurately and purposefully reconstruct the shape of brainstem fiber bundles, so that neurosurgeons can more accurately understand the three-dimensional pathological anatomical relationship between tumor and brain stem fiber bundles. In order to formulate the surgical plan in a more reasonable way, choose the optimal surgical approach, understand the location of the "relative safe area" , and be more confident to avoid damage to the brain stem fiber bundle while achieving subtotal or total resection of the tumor,also the nerve function of the patient is preserved as much as possible.
目的： 探究在显微神经外科术前计划中神经外科专科医生通过3D-Slicer软件自主构建脑干纤维束的方法与应用价值。 方法： 收集2018年6月至2019年5月重庆医科大学附属第一医院神经外科31例脑干区域病变住院患者DCIOM格式影像学资料并导入3D-Slicer软件系统由神经外科专科医生自主构建纤维束，分别生成二维部分各向异性（FA）图、方向编码彩色（DEC）图及三维纤维束示踪图，构建术前虚拟病理解剖影像系统，了解肿瘤与脑干纤维束的三维病理解剖关系，制定精确的手术入路，术前模拟手术步骤。 结果： 全部病例均由神经外科专科医生自主重建脑干纤维束，利用自主构建的的三维虚拟影像进行手术计划的制定，尽量避开脑干纤维束操作，在显微神经外科技术及神经内镜辅助下顺利完成所有手术，31例病例均在避免损伤纤维束的前提下达到全切或者次全切肿瘤，术后新发脑干纤维束损伤症状轻微，术后3个月随访31例患者未见明显脑干纤维束损害症状，术后6个月随访31例患者亦未见明显脑干纤维束损害症状。 结论： 由神经外科专科医生自主构建脑干纤维束可精确地、有的放矢地重建脑干纤维束的走形，可更加精确地了解肿瘤与脑干纤维束的三维病理解剖关系，更加合理地制定手术计划，确定"相对安全区"位置，选择最优手术入路，以最大限度避免损伤脑干纤维束达到肿瘤次全或全切除。.
Keywords: Brainstem; Fiber bundle; Imaging, Three-Dimensional; Microsurgery; Neurosurgeons.