DUAL CCD CAMERA THERAPY SIMULATOR CT

双 CCD 摄像头治疗模拟器 CT

• 批准号: 2796284
• 负责人: MICHAEL D SILVER
• 金额: $ 12.93万
• 依托单位: BIO-IMAGING RESEARCH, INC.
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-30 至 1999-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2796284
• 关键词: biomedical equipment development; clinical biomedical equipment; clinical research; computer program /software; computer system design /evaluation; human subject; image enhancement; phantom model; radiation therapy

The investigator's propose to continue development of a dual-camera image intensifier-based CT system as a radiation therapy simulator, as further described by their abstract. "Computed tomography (CT) has become increasingly important in radiotherapy planning: CT add-ons have been introduced for therapy simulators and specialized CT scanners have been developed as stand-alone therapy planning system. However, CT add-ons have poor throughput, which prevents sufficient image slices for adequate therapy planning, and often poor image contrast. CT-based simulators do not duplicate the physical environment of therapy machines and require extra floor space. Phase I research demonstrated that the innovative scheme of dual cameras with different gains optically coupled to the x-ray image intensifier of a simulator solves the dynamic range problem to provide the contrast necessary for CT and enables cone-beam CT solving the throughput problem. For Phase II, an in-house simulator will be modified to include the dual camera optics. A computer system capable of the human data rates and the intense computational task of volume image reconstruction will be built and programmed, based on an already existing prototype. Phase II testing will include anthropomorphic phantoms on the in-house simulator, culminating in limited clinical trials at the Veterans Administration Hospital, Milwaukee."

研究者建议继续开发双摄像头图像 作为放射治疗模拟器的基于增强器的CT系统，还 用他们的抽象来描述。“计算机断层扫描（CT）已经成为 在放射治疗计划中越来越重要：CT附加装置已经 为治疗模拟器和专用CT扫描仪引入的 作为独立的治疗计划系统开发。 然而，CT附加组件 吞吐量差，这妨碍了足够的图像切片， 治疗计划和通常较差的图像对比度。基于CT的模拟器 不复制治疗机的物理环境， 额外的地板空间 第一阶段的研究表明， 光学耦合到X射线的具有不同增益的双相机的方案 模拟器的图像增强器解决了动态范围问题， 提供CT所需的对比度，并使锥束CT能够解决 吞吐量问题。 在第二阶段，将修改内部模拟器 包括双摄像头光学系统。 一个计算机系统， 数据速率和体积图像的密集计算任务 重建将建立和规划，根据现有的 样机 第二阶段的测试将包括拟人化的幻影上， 内部模拟器，最终在退伍军人有限的临床试验 行政医院，密尔沃基。"