Objective To investigate the feasibility of applying diffusion tensor imaging ( DTI)-based arcuate fasciculus tractography and intraoperative arcuate fasciculus navigation for neurosurgery. 目的初步探讨弥散张量成像纤维束示踪技术显像弓形束及术中弓形束导航在神经外科手术中的可行性。
Results Significant reductions in anisotropy were found in the white matter of bilateral mesial temporal lobes, right middle temporal gyrus and left parietal lobe, left lateral capsule, right superior longitudinal fasciculus and fornix. 结果对照组和AD组的双侧内颞叶、右颞中回、左侧顶叶白质,左侧外囊,右上纵束和穹窿的各向异性FA值差异具有显著性意义。
The results are as follows: 1.An is situated on the medial side of the fasciculus longitudinalis medialis; 结果表明:1.环核位于内侧纵束的内侧;
Injection in exterior OMN affected little parts of medial longitudinal fasciculus and OMN. 注射到动眼神经核的外部累及内侧纵束和动眼神经核的少部分。
Conclusions: Ponceau 2R-brilliant green double staining technique can clearly display the CST in the brain stem and spinal cord and offer a quick, simple and reliable means for demonstrating the localization of fasciculus in the research of central nervous system injury and repair. 结论:丽春红2R-亮绿染色法可以清楚地显示成年大鼠皮质脊髓束在脑干和脊髓内的位置,为中枢神经损伤与修复研究提供一种简便、快速、可靠的神经纤维束定位染色方法。
Results: GDNF mRNA was mainly located in neuronal processes, especially in fasciculus. 结果:GDNFmRNA主要分布于神经细胞的突起,在纤维束处更明显。
Results The tumor cells were spindle and arranged in fasciculus, The nuclei displayed mild to moderate atypia with mitotic figures counted 3-4/ 10HPF. 结果肿瘤细胞呈梭形,排列成束,显示中度异型性,可见核分裂像(3~4个/10HPF)。
Under light microscope, the new small vessels in fasciculus in the microscope group were more significantly than that in the control group, and the vacuoles due to degeneration necrosis of nerve fiber were less significantly than that in the control group. 光镜观察下,微波组神经束内新生小血管明显多于对照组,神经纤维变性坏死形成空泡明显少于对照组。
Fraction of anisotropy values and the tracked fasciculus in left corticospinal tract decreased, and the connecting fibers between Broca and Wernicke areas also decreased as compared with those in the contralateral area. 左侧皮质脊髓束部分各向异性值及追踪到的纤维束较对侧减少,Broca区与Wernicke区之间的联系纤维与对侧相比减少。
Simulation shows that more precise results can be obtained by using these two interpolation algorithms compared with the traditional linear ones. Besides, structural features such as the raw signal edge can be reserved effectively, hence facilitating further research such as neural fasciculus tracing. 4. 仿真实验表明,与传统的线性插值相比,这两种插值算法得到的结果更加精细,有效地保留了原始信号的边缘等结构特征,有利于跟踪大脑纤维束等进一步的研究。
The results showed FA increase. AD and RD decrease in corpus callosum, rona radiata and superior longitudinal fasciculus. 实验发现,胼胝体、放射冠和上纵束等脑区出现了FA值升高、AD与RD值下降的现象。