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基于多分辨率SiPM阵列的PET探测器

Jiahao Xie1, Haibo Wang1, Simon R Cherry1

  • 1Department of Biomedical Engineering, University of California at Davis, Davis, CA 95616 USA.

IEEE transactions on radiation and plasma medical sciences
|November 18, 2024
PubMed
概括

一个新的多分辨率光倍增器 (SiPM) 阵列设计改善了高分辨率正子发射断层扫描 (PET) 探测器中的边缘晶体识别. 这项创新减少了读取通道,同时保持了检测器的关键性能.

科学领域:

  • 医疗成像医学成像
  • 探测器物理学的物理

背景情况:

  • 高空间分辨率正电子发射断层扫描 (PET) 探测器在解决边缘晶体方面面临挑战,原因是闪光灯和光探测器阵列之间的距离不匹配.
  • 这种不匹配需要先进的解决方案来保持探测器的性能,特别是在边缘.

研究的目的:

  • 引入和评估用于PET探测器的新型多分辨率光倍增器 (SiPM) 阵列设计.
  • 目标是减少读出通道的数量,同时保持或提高边缘晶体的分辨率.

主要方法:

  • 设计和测试了一种伪 9 × 9 多分辨率 SiPM 阵列 (使用各种 SiPM 尺寸).
  • 它的性能与标准的8 × 8 SiPM阵列和16 × 16 SiPM阵列进行了比较.
  • 一个36 × 36 LYSO闪光灯阵列,一个1.5毫米的距离被用于评估.

主要成果:

  • 多分辨率SiPM阵列展示了与16 × 16阵列相比的边缘晶体分辨率.
  • 性能明显超过了8 × 8 SiPM阵列的性能.
  • 小SiPM的数字分组有效地为数组创建了更大的伪SiPM.

结论:

  • 拟议的多分辨率SiPM阵列设计是改善PET探测器边缘晶体识别的可行解决方案.
关键词:
在这里,PET是PET.辐射探测器 辐射探测器这就是SiPM SiPM.

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  • 它提供了一种减少读取通道的方法,而不会影响检测器的基本分辨率.
  • 这种方法有望为更高效和有效的PET检测器开发提供希望.