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1.
目的探讨内镜下可视化血肿穿刺术治疗高血压脑出血的安全性和效果。方法对2012年1月至2013年1月16例高血压脑出血病人在内镜下进行血肿清除手术,术中使用自制透明穿刺鞘配合内镜进行可视化血肿穿刺,穿刺成功后置入套筒在内镜下清除血肿。结果 16例患者中有2例在穿刺过程中发现皮质内血管,予调整穿刺方向规避。16例患者置入和取出套管过程中瘘道壁无血管出血,清除血肿率为(92.6±9.4)%,术后无再出血。术后6个月按GOS评分:恢复良好4例,中残9例,重残3例。结论可视化血肿穿刺使得高血压脑出血血肿清除全程处于内镜监视下,提高了内镜手术工作通道置入时的安全性和疗效。  相似文献
2.
Peripheral nerve injuries are often caused by trauma and they may result in a partial or total loss of motor function or sensory perception. After nerve injuries, peripheral axons have the ability to regenerate and reconnect the proximal and distal ends of severed nerve axons if the nerve gap is small. For larger nerve gaps, surgical treatments are often required to repair the injured nerves.  相似文献
3.
A total of 3,446 publications regarding sciatic nerve injury repair and protection indexed by Web of Science during 2000-2004 were used for a detailed analysis of temporal-spatial distribu- tion characteristics. Reference co-citation networks of the 100 top-cited publications as per the number of total citations were created using the Web of Science database and the information visualization tool, CiteSpaceIIL The key words that showed high frequency in these publications were included for analyzing the research fronts and development trends for sciatic nerve injury repair and protection. Through word frequency trend analysis, studies on bone marrow mesen- chymal stem cells, adipose-derived stem cells, and skeletal muscle-derived multipotent stem cells combined with tissue-engineered scaffold material will become the forefronts in the field of sci- atic nerve injury repair and protection in the near future.  相似文献
4.
This study analyzed 85 articles indexed by the Web of Science concerning nerve regeneration and osseoperception during tooth loss repair. Using the Web of Science database and Citespace Ⅲ software, a document co-citation network map was drawn by document co-citation analysis and word frequency analysis methods. Combined with emergent node secondary literature retrieval, subject headings with apparent changing word frequency trends were retrieved so as to identify research frontiers and development trends. Research frontiers and hotspots for neuronal calcium sensor protein were quantitatively explored to forecast future research developments in nerve regeneration and osseoperception during repair of tooth loss.  相似文献
5.
Three-dimensional reconstruction nerve models are classically obtained from two-dimensional images of "visible human" frozen sections. However, because of the flexibility of nerve tissues and small color differences compared with surrounding tissues, the integrity and validity of nerve tissues can be impaired during milling. Thus, in the present study, we obtained two-dimensional data from a healthy volunteer based on continuous CT angiography and magnetic resonance myelography. Semi-automatic segmentation and reconstruction were then conducted at different thresholds in different tissues using Mimics software. Small anatomical structures such as muscles and cervical nerves were reconstructed using the medical computer aided design module. Three-dimensional digital models of the cervical nerves and their surrounding structures were successfully developed, which allowed visualization of the spatial relation of anatomical structures with a strong three-dimensional effect, distinct appearance, clear distribution, and good continuity, precision, and integrality. These results indicate the validity of a three-dimensional digital visualization model of healthy human cervical nerves, which overcomes the disadvantages of milling, avoids data loss, and exhibits a realistic appearance and three-dimensional image.  相似文献
6.
增强现实(augmented reality,AR)是在虚拟现实(virtual reality,VR)基础上发展起来的一种新的跨学科技术,以跟踪注册、显示和交互为支撑的技术。AR可以将计算机产生的虚拟物体融合于真实场景中,具有虚实融合、实时交互和辅助增强的特点,使用者感知的是真实世界的场景,而不是虚拟现象,体现  相似文献
7.
目的应用3.0T MRI特殊扫描构建人类海马三维可视化图谱。方法利用哈尔滨工业大学Bio-X中心开发的软件对3.0T MRI特殊扫描图像的海马边界进行识别、分割等图像转换处理,并进行重建。结果显示双侧海马呈口朝向内上侧"C"形,海马头部较大、尾部缩窄,整体如"逗号"形态。应用透明处理方法进行的三维重建清晰的显示了双侧海马及头、体、尾部三部,甚至肉眼可见的体积及形态差异。结论利用3.0T磁共振特殊扫描可以成功构建人类海马三维可视化图谱。  相似文献
8.
背景:髋关节表面置换过程中二维图谱只能观察到三维解剖结构的某一个侧面,不能全面地把握整体的三维结构。 目的:利用个人计算机结合图像处理软件Amira 4.1对髋关节表面置换进行三维重建,建立髋关节表面置换的可视化数字模型。 方法:对1例髋关节表面置换后患者骨盆进行多排螺旋CT扫描,观测内置物的位置形态,将原始数据以.dicom格式输入个人PC,利用Amira软件,经剪切、分割、表面重建及体绘制等步骤,根据解剖结构特点,对骨盆及髋关节进行三维重建,获得立体形态的髋关节及内置物位置结构。 结果与结论:重建了骨盆、髋关节及内置物的形态构成,重建的三维结构可以多彩色、透明或任意组合显示,经不同角度观察,整体显示清晰、实体感强。在三维表面重建的图像中可清楚观察表面假体的位置形态,特别是可以立体直观显示全髋关节表面置换假体的大小、倾角、稳定性以及磋磨股骨头形态,并可精确测量。提示髋关节表面置换三维重建对基础研究、临床试验及手术规划具有重要价值,应用Amira软件可为三维建模提供基础。  相似文献
9.
背景:常用的血管解剖学研究方法如逐层解剖、血管染色、造影摄片可以确定血管的位置、大至供血范围等,但难以显示皮肤微血管立体构筑。 目的:建立三维的皮肤微血管构筑模型,以评估和设计穿支皮瓣。 方法:选取2具新鲜成人尸体标本,以羧甲基纤维素明胶氧化铅灌注标识血管,CT扫描获取标本灌注前后及剥离皮肤序列图像数据,利用Mimics13.1软件进行皮肤微血管三维重建和穿支皮瓣设计。 结果与结论:实验成功重建了骨骼、血管、皮肤三维数字模型,并选择性设计了旋股外侧动脉皮瓣和旋肱后动脉的主要穿支皮瓣。构建的皮肤微血管模型不仅可显示皮穿支的长度管径、立体位置、走行方向、分布范围、毗邻关系,还可追踪其来源血管,与来源血管、骨骼、皮肤等搭配显示。说明皮肤微血管构筑可揭示穿支皮瓣的范围和扩张方向,有利于穿支皮瓣的设计发掘、血供评估。  相似文献
10.
摘要:近年来图像可视化技术蓬勃发展,相应的各种加速算法也层出不穷,本文将尝试就此内容进行综述和概括。首先介绍可视化技术的两大分支——面绘制和体绘制的含义和主要特点;其次详细介绍体绘制技术中一些典型算法的基本原理及各自特点;然后分别从软件和硬件角度归纳体绘制技术中常用的加速技术;最后展望医学图像可视化及加速技术的发展趋势。  相似文献
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