PORTABLE SPECTROMETER FOR MAMMOGRAPHY SYSTEM CALIBRATION

“尽管1992年的乳房X光摄影质量标准法案要求 乳房X光检查中心进行年度例行物理检查，有 没有足够的合格医学物理学家来完成设计的12项测试 由美国放射学会确保最高质量 图像是以尽可能低的患者剂量产生的，主要是由于 执行和记录这些测试所需的时间。缺乏直接性 评估X射线束质量、耗时、间接测量，如 因为采用了不提供信息的半值层 这是非常令人向往的。 因此，我们建议开发一种便携式x射线光谱仪 利用运行用于数据采集的集成软件套件的计算机， 分析和报告生成，并能够直接执行所有 与评估束流质量和估算剂量有关的测试。因此，我们 预计至少将调查测试时间减半，从而有效地翻一番 可用于执行这些任务的合格物理学家的数量。 在第一阶段，我们通过演示证明了方法的可行性 其主要物理问题的解决方案。在第一阶段，我们将完善我们的 接近并建造了一个原型光谱仪，它也可以用于 校准其他医学成像机，如射线照相机和 荧光成像系统和计算机地形扫描仪。

"Although the Mammography Quality Standards Act of 1992 requires all mammography centers to undergo a yearly routine physics survey, there are not enough qualified medical physicists to cary out the 12 tests devised by the American College of Radiology to assure that the highest quality images are produced with the lowest possible patient doses primarily due to the time required to perform and document these tests. Lacking direct assess to x-ray beam quality, time consuming, indirect measurements such as half-value layer are employed which do not provide the information which is really desired." "We therefore propose to develop a portable x-ray spectrometer integrated with a computer running an integrated software suite for data acquisition, analysis and report generation and capable of directly performing all tests related to evaluating beam quality and estimating doses. We thereby expect to at least halve survey test times, thereby effectively doubling the number of qualified physicists available to perform them." "In Phase I, we showed the approach's feasibility by demonstrating solutions to its major physics problems. In Phase I we will refine our approach and construct a prototype spectrometer, which could also be used to calibrate other medical imaging machines, such as radiographic and fluoroscopic imaging systems and computed topography scanners."