Bio - tissue optics is the basic of the light diagnostic and therapeutic medicine , whose most critical problem is the measurement of the optical properties of the turbid tissues , such as the absorption a , the scattering s , and the am ' sotropy coefficient g . in this paper , the optical properties of ultrashort laser pulse within turbid tissues has been investigated and discussed 激光与生物组织的相互作用规律是光动力学治疗、医学成像、监测组织的生理和结构状态等技术的理论基础和前提，其中的关键性问题就是确定生物组织的光学性质的基本参数，即吸收系数、散射系数和各向异性因子等。
These systems operate on a wide variety of continuous time signals , which include speech , medical imaging , sonar , radar , electronic warfare , instrumentation , consumer electronics and telecommunications systems ( terrestrial and satellite ) . one of the key to the success of these systems has been advances in the development of the font end of the electronic systems - analog - to - digital converters ( a / d ) which converter the continuous - time stimuli signals to discrete - time binary - coded form 这些系统可广泛地应用于处理连续时间信号，包括语音、医学成像、声、雷达、电子对战、仪器、消费电器、远程通讯(地面和卫星)等，而这些系统成功的关键因素之一就是电子系统的前端部件? ? a d取得了长足的进步( a d把连续时间信号转换成离散时间、二进制编码的数字信号，便于后级精确的数字信号处理) 。
Optical tomography of biological tissue has become an active research field because of the advantages of noninvasive , sensitive and functional imaging for biomedical diagnosis . it is very helpful to find cancerous tumor of parenchyma organs in the initial stage , but the biological tissue is optically turbid and a strong scattering media , which results in a limited penetration depth of several millimeters with high resolution 光学相干层析技术，作为一种新型的无损医学成像检测方法，其探测精度高，而且有可能实现功能成像，对于癌变组织的早期发现和诊断具有重要的意义，但受目前技术的局限性，还不能完全满足临床应用的要求。
Dwaine rieves , fda ' s acting director of medical imaging and hematology products , said , " the label ' s lack of a target has been viewed by some physicians as an important deficiency " and said the agency ' s goal is provide " a more useful direction " without waiting for future clinical studies to better address the question of what the proper target range should be Fda医学成像和血液学产品的代理主任说道， “医生们认为在说明书上没有目标性的血色素水平是一个重大缺陷” ，并指出经销商的目的是在不必等待将来的临床研究的给出这一适宜目标范围的前提下，提出更有效的用药指导。
Together , wd raptor and wd re offer high performance , reliability and capacity for network attached storage devices , storage area networks , workstations , raid servers , medical imaging , gaming and video broadcast applications . consumer electronics devices are home to high - capacity , quiet - operating , video - streaming wd drives Wd raptor猛禽和wd caviar鱼子酱re一起共同为附有存储设备的互联网存储区网络工作站raid服务器医学成像游戏和录象广播的应用方面，提供了高性能可靠性和大容量存储设备。
Sequentially , the author discussed the technologies of medical image 3d visualization according to the clinical applications . with the development of computer , 3d visualization and computer graphics , the 3d visualization of medical images has progressed from fourier transform and convolve inverse projection to mpr ( multi - planar reformation , mpr ) and mtp ( maximum intensity projection , mtp ) , nowadays , the real 3d reconstruction method , surface and volume rendering has risen . the image registering , image segmentation , pixel data set construction and 3d special interpolation are the key technologies in medical images 3d reconstruction 随着计算机技术、三维可视化理论和计算机图形学的发展，医学图像的三维可视化技术也从傅立叶变换、卷积反投影等基本图像处理算法，发展到真正的三维重建算法：面绘制和体绘制；医学图像的三维可视化技术的应用也从三维医学成像发展到虚拟内窥镜，以及今天的虚拟可视化人体研究；而图像的配准、图像分割、体数据集的构建、三维空间插值则是医学图像三维可视化实现过程中的关键技术环节。
In recent years , a new type of medical imaging technology , which is called electrical impedance tomography , has aroused extensive interest of researchers at home and abroad . it has its own advantages at these aspects . here we applied this technology to do some research on the electrical characteristics of 2d head model 但至今还没有一种体积小、成本低而且便携的脑成像系统，近年来一种新兴的医学成像技术? ?电阻抗断层成像技术( eit )引起了国内外的广泛兴趣， eit技术在这些方面有着自己的优势，本课题尝试应用eit技术对二维头模型的电特性进行研究。
