基于法矢量低通滤波的三维数据等值面平滑显示

在以前的三维显示研究中，采用表面矢量平滑的方法对三维重建后的数据显示取得了较好的效果，但也产生了表面特征和特征角等有用信息丢失的问题。现通过把表面法矢量视为离散矢量信号，引入信号处理中滤波器的方法平滑表面法矢量。相对于三维表面数据场的平滑，不仅平滑迭代次数更少，而且更好地保留了有用的表面特征信息。     

可视化技术在急诊隔离手术流程中的应用

目的:探索可视化技术在急诊隔离手术室的应用效果。方法:整理2020年4—7月华中科技大学同济医学院附属协和医院急诊隔离手术室在可视化设备下实施1 422例急诊手术,采用便利抽样法,抽取期间参与手术的35名医护人员和接受手术治疗的30例患者为研究对象,对其进行访谈和效果评价。结果:94%（33/35）的医护人员对该系统非...     

Web环境下人体数据集三维可视化初步研究

目的使用可视化工具包(theVisualizationToolKit,VTK)的重建算法对中国可视化人(Chinesevisiblehu-man,CVH)数据集进行重建,结合虚拟现实建模语言(virtualrealitymodelinglanguage,VRML),互联网环境下实现远程访问并对重建结果进行交互操作。方法应用数字化可视人体数据获取技术,对双侧肱骨图片进行三维重建,生成基于网络的立体结构。结果重建出双侧肱骨的三维立体图像,在网络浏览器窗口能任意角度和比例大小对它们进行观察,清楚显示了其空间位置关系。结论本研究以VTK和VRML为基础,实现CVH数据集三维可视化重建,为深入研究和实现更多解剖结构可视化以及科学计算提供支持,也为解剖远程网络教学提供了范例。     

手术导航系统中器械的可视化与实时跟踪

为了在外科手术导航系统中实现手术器械的可视化与实时跟踪，形成了一种从器械模型的建立到实时跟踪的方法。应用三维实体造型技术或反求技术构建手术器械的模型，完成实体几何模型向三维表面模型的转化，并进行器械的定位标定与精度测试。术中应用ICP算法实现CT模型与患者位置的空间配准，根据术前标定的位置与方向实时准确地跟踪手术器械的空间位置并在系统中显示，实现器械的可视化与实时跟踪。器械模型的建立为手术导航系统中器械的可视化与实时跟踪奠定了基础，对于提高手术的可靠性与准确性具有重要的作用。     

Seeing our way to drug design

Summary Interactive molecular graphics plays an important role in every stage of the drug design process. The technology of molecular graphics has advanced considerably over the past 30 years, both in terms of hardware features for advanced rendering and computation, and in terms of software environments for rapid, flexible and extensible program development. This paper discusses the role of interactive computer graphics in rational drug design, from structure determination, computation and analysis, through prediction and design, to communication and presentation. The emphasis is on the new trends in the technology, and how they can be utilized to facilitate and improve the various stages of the process.     

A graphic tool for curating molecular interaction networks from the literature

We propose a graphic tool for curating molecular interaction networks constructed from the literature by information extraction (IE). In order to turn preliminary results from IE into useful biomedical resources, we propose to use a controlled environment in which visualization and IE work synergistically. The usability of the proposed graphic tool is shown with respect to the identification of incorrectly extracted results that are due to the much troubling coordination phenomena in natural language texts. Through the experiment on molecular interactions in Saccaharomyces cerevisiae, we have seen a meaningful increase (from 91.5% to 97.5%) in the number of correctly extracted interaction information.     

基于人体信息三维可视化的医学图像边缘检测算法研究

针对医学图像处理和三维医学图像可视化，系统总结了目前边缘检测技术，归纳了各种边缘检测算法。     

Visualization of VIII:C-like material in a CRM negative hemophiliac

A low molecular weight protein which is immunologically and structurally analogous to the VIII:C in normal individuals has been demonstrated in a CRM negative hemophiliac following column chromatography using two different techniques, both of which affect the ionic environment. Elution patterns suggest a close similarity between normal and hemophilic proteins. Data from isoelectric focusing also indicates similarity with both proteins showing two acidic and one neutral band.

Identity is further confirmed by visual demonstration on SDS polyacrylamide gel electrophoresis. Both LMW proteins show a dark band at approximately 150,000 with faint traces of protein at 71,000 and 43,000. This material does not react with anti-albumin, anti-whole human serum, anti-fibrinogen or rabbit antibody to Factor VIII suggesting that no contaminating protein material is present. However, upon elution of these bands from the gels they react with human antibody in the inhibition assay, a test which is said to be an accurate indicator of the presence of VIII:C-like material. Upon reduction with DTT, both samples again show identical patterns with a single band at 43,000. The data demonstrates the first visualization, on gels, of a VIII:C-like material from a CRM negative individual and indicates that, like the normal, it has a very low molecular weight.     

颈椎可视化的初步研究

目的：进行计算机辅助的颈椎三维图像研究。方法：取人尸体材料的颈椎,行CT薄层连续扫描,将图像数据转至计算机中,实现计算机辅助的CT图像的三维重建,并进行三维精确测量。结果：重建图像从形态和大小上与实际标本相一致。重建图像可任意旋转和多视角地检测。结论：该三维重建方法为颈椎推拿手法的研究提供了一条崭新的方法和思路。