Bresenham算法与OpenGL技术在DICOM图像处理中的研究

：DICOM是国际通用的医学图像存储与传输标准,对DICOM的读取与显示是其他医学图像处理的基础,但基于该标准的图像文件通常并不被现有的图像处理软件所支持。本文介绍了一种通过对DICOM文件格式的解读和OpenGL技术从而实现对医学图像的读取与显示以及实现在对医学图像的处理过程中涉及到大量的窗宽窗位调节的操作的实时显示的新方法。并使用Bresenham算法改进了LUT的生成,提高医学影像的显示效率。     

计算机辅助DICOM医学图像三维可视化研究

医学图像三维重建是当前医学图像可视化技术研究的热点,在诊断医学、模拟仿真及手术规划等方面具有广泛的运用。因此,医学图像三维重建技术的研究,具有重要的学术意义和应用价值。本文重点对基于DICOM3.0标准的医学图像三维重建的关键技术进行了研究,包括DICOM3.0文件格式的读写及格式转换、面绘制算法研究与实现、体绘制算法研究与实现这三部分内容。本文在对MITK(Medical imaging Tool Kit)深入了解其技术内幕的基础上,利用其工具包提供的底层算法,在Visual C++6.0开发环境下实现了各种功能。     

用VC＋＋和DCMTK显示DICOM医学图像

DICOM是医学影像存储和传输的国际标准,它的制定为不同的医学影像设备和用户提供了统一的接口标准和交互协议。解读DICOM的医学图像文件格式以及用利用VC＋＋和DCMTK显示方法显示DICOM医学图像。     

医学图像传输协议DICOM标准的运行机制

医学影像归档及通信系统（PACS）是国内医学数字图像处理及传输领域的一个研究热点。数字成像及通信协议（DICOM3．0）是医学数字图像及传输领域的国际标准，几乎所有的医疗设备都支持DICOM协议。主要探讨PACS底层图像传输服务——DICOM协议的运行机制，说明PACS系统如何实现图像的归档和通讯。     

DICOM医学图像格式转换的VC 实现

DICOM3.0是医学影像存储和传输的国际标准,它是随着图像化、计算机化的医疗设备的普及和医院管理信息系统(PACS)和远程医疗系统的发展应运而生.DICOM的定制为不同的医学影像设备和用户提供了统一的接口标准和交互协议.DICOM医学图像在CT、MR、医院PACS系统中应用广泛.编程实现DICOM医学图像格式转换,对医学影像技术的研究具有重要的意义.     

基于DICOM医学图像软件工具包的设计和实现

DICOM(医学数字成像及通信)是PACS(图像存储与通信系统)网络内各系统互联的基础，也是用于统一各种数字化影像设备的图像格式和数据传输的标准、本文根据的开发经验，介绍了符合DICOM3．0标准的医学图像文件格式，并详细描述了设计DICOM软件工具包的实现过程。     

DICOM医学图像查看器的设计与实现

当前多数医学影像设备制造商都采用了DICOM标准。随着这些数字影像设备在医院中的普及,DICOM格式的影像文件已经成为最常用的图像格式。本文通过对DICOM文件结构的分析研究,设计了一个DICOM图像查看器,能够对DICOM文件进行显示以及一些常用操作。     

胃肠X光设备DICOM接口的设计与实现

支持DICOM标准是医学影像设备并入PACS网络的必要条件.为了对我国医院大量不符合DICOM标准的影像设备实施改造,使其有效并入PACS系统,必须为其添加DICOM接口.针对旧式胃肠机,采用视频摄像头和专业数码相机组建了应用于影像设备工作站的DICOM接口系统,并应用Visual C++编程实现了接口的软件系统,重点介绍了系统构成和软件系统各模块功能以及灰度图的VOI变换和显示技术.     

基于DCMTK的DICOM医学图像调窗显示方法研究

介绍了DICOM医学图像的文件格式,阐述了调窗处理快速显示的方法,利用VC＋＋和DCMTK并借助Dib类实现了医学图像快速调窗显示功能。     

静态DICOM医学图像与常规图像格式的相互转换

为了使得非医学数字成像与通讯(DICOM)标准的设备产生的图像也能与符合DICOM标准的图像存档与通讯系统(PACS)融合,需要两者之间进行文件格式的转换.通过深入了解DICOM医学图像与常规图像格式的特点,分别提取和构造二者文件信息,开发了一种在DICOM文件与非DICOM文件间进行格式转换的软件,该软件已成功应用在安徽省立医院等多家医院的PACS系统中.结果表明可以在实现DICOM医学图像与常规图像格式互换的同时,保证不丢失图像信息,可以基本满足实际需要.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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