CAREER: An Energy-Subtraction Compton Scatter Camera for Medical Imaging

9734276瓦伦丁该项目的研究部分涉及开发一种新型医学成像相机，该相机基于经过初始康普顿散射相互作用的伽马射线事件的重建。这种独特的相机设计，被称为能量减法康普顿散射相机（ESCSC），可以在使用现有技术的同时彻底改变医学成像。与现有的临床单光子发射计算机断层扫描（SPECT）相机相比，这种设计的临床应用可以将灵敏度提高100倍以上，同时保持或提高空间分辨率。此外，ESCSC实现的灵敏度提高的重要临床意义包括：更短的成像时间（导致运动模糊减少，更快的患者吞吐量和更高的患者舒适度）；减少病人/工作人员的辐射暴露；为接受后续癌症治疗的患者提供更有效的诊断成像；而且很可能降低了初始资本投资以及维护和人员配备方面的成本。此外，拟议的系统将更紧凑，更便携，操作起来比目前的相机更方便。为了实现这一设计，需要对当前成像系统的数据采集和分析进行根本性的转变。为了产生临床ESCSC设计，建议：1)使用模拟和实验数据优化相机的各个方面；2)对部件进行表征以优化性能；3)制定最优数据采集方案；4)开发图像重建算法。该计划的教育部分包括制作二维和三维动画，说明辐射科学和技术主题，并将部分用于向所有观众传达医学成像研究的重要性。更具体地说，a)辐射与物质的相互作用，b)大多数辐射探测器的响应，以及c)复杂电子系统的行为，如拟议的ESCSC，当使用动画来模拟过程时，观众可以更好地理解（es）。因此，本提案教育方面的目标是发展制作二维和三维动画和交互式计算机练习所需的专门知识，然后将它们用于：1)本科和研究生辐射探测和测量课程；2)初中和高中教师讲习班，旨在帮助这些教育者有效地向学生讲授辐射科学和技术；3)开设医学影像学入门课程；4)介绍本课题及其他课题的研究成果。此外，这些动画在帮助提高患者对他们正在考虑或被建议进行的医疗程序的理解方面非常有用。* * *

9734276 Valentine The research component of this project involves the development of a novel medical imaging camera based on reconstruction of gamma-ray events which underwent an initial Compton scatter interaction. The unique camera design, which has been termed the Energy-Subtraction Compton Scatter Camera (ESCSC), could revolutionize medical imaging while using existing technologies. The clinical implementation of this design may enhance sensitivity by a factor of over 100, while maintaining or improving spatial resolution, as compared with existing clinical single photon emission computed tomography (SPECT) cameras. Furthermore, significant clinical implications of the improved sensitivity realized by the ESCSC include: shorter imaging times (resulting in reduced motion blur, faster patient throughput, and greater patient comfort); reduced patient/worker radiation exposure; more effective diagnostic imaging for patients undergoing subsequent cancer therapy; and very likely reduced cost both for the initial capital investment and in terms of maintenance and staffing. Additionally, the proposed system would be more compact, more portable, and less cumbersome to operate than current cameras. To implement this design, fundamental shifts in data acquisition and analysis over current imaging systems are required. To produce a clinical ESCSC design, it is proposed to: 1) optimize all aspects of the camera using simulations, along with experimental data; 2) characterize components to optimize performance; 3) develop an optimal data acquisition scheme; and 4) develop image reconstruction algorithms. The education component of this project involves developing two- and three-dimensional animations illustrating radiation science and technology topics and will be used in part to convey the significance of medical imaging research to all audiences. More specifically, a) the interactions of radiation with matter, b) the response o f most radiation detectors, and c) the behavior of complex electronic systems, such as the proposed ESCSC, can be much better comprehended by an audience when animations are used to simulate the process(es). Consequently, the objectives of the educational aspect of this proposal are to develop the expertise necessary to produce two- and three-dimensional animations and interactive computer exercises, then to use them in: 1) the undergraduate and graduate radiation detection and measurement curricula; 2) junior high and high school teacher workshops, which are aimed at helping these educators effectively teach their students about radiation science and technology; 3) an introductory course in medical imaging to be developed; and 4) presenting the results of this and other research projects. In addition, these animations could be very useful in helping to improve patient understanding about the medical procedures they are considering or have been recommended to have. ***