TRUE VOLUME VISUALIZATION OF MEDICAL DATA

此应用程序基于三维(3D)的假设 对于人类和计算机来说，当数据 是以真3D形式呈现的。3D是一个有多种含义的术语，在这方面 应用，真正的形容词是指观众可以用 立体视觉。这个应用程序主要处理人类的感知， 然而，计算机感知的结果必须呈现给人类 用于验证，所需的可视化工具将类似于 针对原始或已处理的3D数据进行描述。 一个体积工作站正在开发中。真正的3D显示使用 液晶立体声快门技术。该工作站具有独特的 直接3D指针和语音输入输出。体积测量软件由 ，梅奥诊所的分析程序转换为 立体显示，以及数字立体显微镜算法，允许 检查离散3D数据的方式与光学立体声大致相同 显微镜用来检查透明的真实样品。 此应用程序建议通过升级一个 捐赠的包含奥德赛多处理器的Explorer LX工作站 具有额外内存和磁盘存储的子系统，并将 在现有的多处理器上增加了数值密集型算法。这个 该技术的可行性将通过加工和/或 显示两类医疗数据：3D采样数据的立方体(核磁共振， SPECT和模拟多普勒超声心动图)和获得的数据 空间定向换能器(多电极心外膜电图仪， 立体电子显微摄影和立体电影血管摄影)。调查人员 对数据类型的经验将对结果进行评估。 医学3D数据的感知几乎没有受到关注和 建议进行心理物理研究，以检查调查人员 能够在3D空间中解析细节。主题将呈现多种多样 以应用为导向的刺激，并被要求通过触摸感知来回应 结构，其中3D指针提供了异常可量化的数据 分析。我们亦会进行广泛的校正研究，以 确定对象指向精确已知的对象的精确度 尺寸。

This application is based on the hypothesis that 3 dimensional (3D) structures are easier to identify for both humans and computers when data is presented in true 3D. 3D is a term with many meanings, and in this application, the true adjective means that the viewer can sense depth using stereopsis. This application deals primarily with human perception, however, the results form computer perception must be presented to humans for validation, and the visualization tools needed will be similar to those described for raw or processed 3D data. A volumetric workstation is under developed. The true 3D display uses the liquid crystal stereo shutter technology. The workstation has a unique direct 3D pointer and voice input and output. Volumetric software consists of a volume window manager, Mayo Clinics' Analyze program converted to the stereo display, and the Digital Stereo Microscope algorithms that allow discrete 3D data to be examined in much the same way an optical stereo microscope is used to examine transparent real samples. This application proposes to complete the workstation by upgrading a donated Explorer LX workstation containing the Odyssey multiprocessor subsystem with additional memory and disk storage, and converting numerically intensive algorithms to the existing multiprocessor. The feasibility of the technology will be demonstrated by processing and/or displaying two classes of medical data: cubes of 3D sampled data (NMR, SPECT and simulated doppler echocardiograms) and data obtained form spatially oriented transducers (multielectrode epicardial electrograms, stereo electron micrographs and stereo cineangiograms). Investigators experience with the data types will evaluate the results. The perception of medical 3D data has received little attention and psychophysical studies are proposed that will examine the investigators ability to resolve detail in 3D space. Subjects will presented a variety of application oriented stimuli and asked to respond by touching perceived structures with the 3D pointer providing unusually quantifiable data for analysis. Extensive calibration studies will also be performed to determine how accurately a subject can point to objects of precisely known dimensions.