Methods for optimal design of new detectors for advanced medical-imaging procedures

先进医学成像程序新型探测器的优化设计方法

• 批准号: 386330-2010
• 负责人: Cunningham, Ian
• 金额: $ 2.33万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=528825
• 关键词: Methods; optimal; design; new; detectors

Due to the health risks associated with exposure to x rays in medical diagnostic procedures, it is essential that x-ray detectors be designed to produce the best possible images while exposing the patient to the lowest acceptable levels of radiation. This balance between image quality and x-ray exposure on the detector is described by the "detective quantum efficiency" (DQE) of the detector and is particularly important in computed tomography (CT) imaging which is now responsible for half of all diagnostic medical exposures in North America. A new generation of detectors is currently under development that can measure the energy of x-ray photons for use in advanced imaging procedures including CT. While it is essential that these systems be designed to ensure low dose to patients, the tools required to develop optimal designs are primitive and inadequate for the task. As a consequence, we believe some detectors currently under have little chance of success, while others are not being developed to exploit the full potential of these advanced applications.

由于在医疗诊断程序中与暴露于X射线相关的健康风险，X射线探测器的设计必须能够在使患者暴露于最低可接受辐射水平的同时产生最佳图像。 探测器的“探测量子效率”（DQE）描述了探测器上图像质量和X射线曝光之间的这种平衡，这在计算机断层扫描（CT）成像中尤为重要，目前在北美，CT成像占所有诊断医疗曝光的一半。 目前正在开发新一代探测器，可以测量X射线光子的能量，用于包括CT在内的高级成像程序。 虽然这些系统的设计必须确保患者的低剂量，但开发最佳设计所需的工具是原始的，不足以完成任务。 因此，我们认为目前正在开发的一些探测器成功的机会很小，而其他探测器则没有开发出这些先进应用的全部潜力。