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arXiv 1707.01580physics.med-ph
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原型质子CT头部扫描仪的结果

Results from a Prototype Proton-CT Head Scanner

R. P. Johnson, V. A. Bashkirov, G. Coutrakon, V. Giacometti, P. Karbasi, N. T. Karonis, C. E. Ordoñez, M. Pankuch, H. F. -W. Sadrozinski, K. E. Schubert, R. W. Schulte

摘要:

我们正在探索低剂量质子射线照相术和计算机断层成像(pCT)技术,以提高质子治疗计划的准确性,并在治疗时提供无伪影图像进行验证和适应性治疗。在这里,我们报告了我们的原型pCT头部扫描仪的全面光束测试结果。探测器系统和数据采集可实现每秒超过一百万个单独测量的质子的持续速率,允许在六分钟或更短的射束时间内完成完整的CT扫描。为了评估质子射线照相以及计算机断层成像扫描仪的性能,我们在Northwestern Medicine Chicago质子中心进行了多次体模扫描,包括设计用于评估空间分辨率的定制体模、评估相对阻止本领测量的体模和剂量测定体模。一些图像,性能,和剂量测定结果,从这些幻影扫描的仪器,数据采集系统和校准方法的描述一起。

英文摘要:

We are exploring low-dose proton radiography and computed tomography (pCT) as techniques to improve the accuracy of proton treatment planning and to provide artifact-free images for verification and adaptive therapy at the time of treatment. Here we report on comprehensive beam test results with our prototype pCT head scanner. The detector system and data acquisition attain a sustained rate of more than a million protons individually measured per second, allowing a full CT scan to be completed in six minutes or less of beam time. In order to assess the performance of the scanner for proton radiography as well as computed tomography, we have performed numerous scans of phantoms at the Northwestern Medicine Chicago Proton Center including a custom phantom designed to assess the spatial resolution, a phantom to assess the measurement of relative stopping power, and a dosimetry phantom. Some images, performance, and dosimetry results from those phantom scans are presented together with a description of the instrument, the data acquisition system, and the calibration methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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