首页> 外文会议>Stereoscopic Displays and Virtual Reality Systems XII >Import and Visualization of Clinical Medical Imagery into Multiuser VR Environments
【24h】

Import and Visualization of Clinical Medical Imagery into Multiuser VR Environments

机译:将临床医学影像导入和可视化到多用户VR环境中

获取原文
获取原文并翻译 | 示例

摘要

The graphical representation of three-dimensional data obtained from tomographic imaging has been the central problem since this technology is available. Neither the representation as a set of two-dimensional slices nor the 2D projection of three-dimensional models yields satisfactory results. In this paper a way is outlined which permits the investigation of volumetric clinical data obtained from standard CT, MR, PET, SPECT or experimental very high resolution CT-scanners in a three dimensional environment within a few worksteps. Volumetric datasets are converted into surface data (segmentation process) using the 3D-Slicer software tool and saved as .vtk files and exported as a collection of primitives in any common file format (.iv, .pfb). Subsequently this files can be displayed and manipulated in the CAVE virtual reality center. The CAVE is a multiuser walkable virtual room consisting of several walls on which stereoscopic images are projected by rear panel beamers. Adequate tracking of the head position and separate image calculation for each eye yields a vivid impression for one or several users. With the use of a seperately tracked 6D joystick manipulations such as rotation, translation, zooming, decomposition or highlighting can be done intuitively. The usage of the CAVE technology opens new possibilities especially in surgical training (" hands-on-effect") and as an educational tool (availability of pathological data). Unlike concurring technologies the CAVE permits a walk-through into the virtual scene but preserves enough physical perception to allow interaction between multiple users, e.g. gestures and movements. By training in a virtual environment on one hand the learning process of students in complex anatomic findings may be improved considerably and on the other hand unaccustomed views such as the one through a microscope or endoscope can be trained in advance. The availability of low-cost PC based CAVE-like systems and the rapidly decreasing price of high-performance video beamers makes the CAVE an affordable alternative to conventional surgical training techniques and without limitations in handling cadavers.
机译:由于这种技术的存在,从层析成像获得的三维数据的图形表示一直是中心问题。既不表示为一组二维切片,也不表示二维模型的2D投影都不能产生令人满意的结果。本文概述了一种方法,该方法允许在几个工作步骤内在三维环境中研究从标准CT,MR,PET,SPECT或实验性高分辨率CT扫描仪获得的体积临床数据。使用3D-Slicer软件工具将体积数据集转换为表面数据(分段过程),并保存为.vtk文件,并以任何常用文件格式(.iv,.pfb)导出为图元集合。随后,可以在CAVE虚拟现实中心显示和操作此文件。 CAVE是一个多用户可步行虚拟房间,由几面墙组成,后面板投影仪将立体图像投射在其上。适当跟踪头部位置并为每只眼睛单独计算图像,可以为一个或多个用户带来生动的印象。通过使用单独跟踪的6D操纵杆,可以直观地进行旋转,平移,缩放,分解或突出显示等操作。 CAVE技术的使用开辟了新的可能性,尤其是在外科手术培训(“动手效果”)和教育工具(病理数据的可用性)方面。与并行技术不同,CAVE允许进入虚拟场景,但保留足够的物理感知能力以允许多个用户之间的交互,例如手势和动作。通过在虚拟环境中进行训练,一方面可以大大改善学生在复杂解剖学发现中的学习过程,另一方面,可以预先训练诸如显微镜或内窥镜这样的不习惯视图。低成本的基于PC的CAVE类系统的可用性以及高性能视频投影仪的价格迅速下降,使得CAVE成为传统外科手术培训技术的可负担替代品,并且在处理尸体方面不受限制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号