CN102099704A - 一种x射线图像探测装置 - Google Patents
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Abstract
Description
Claims (12)
- 权 利 要 求1 . 一种 X射线图像传感器,包括多个具有双驱动像元结构的像元, 其特征在于:每个所述像元中包括分为奇偶的两个薄膜晶体管和两个薄膜光敏 二极管;两个所述薄膜晶体管的源极分别连接两个所述薄膜光敏二极管的负 极, 栅极分别连接奇数行驱动线和偶数行驱动线, 漏极连接共同的信号 输出线, 所述信号输出线连接电荷读出电路;两个所述薄膜光敏二极管的正极共同连接像元共地线。
- 2. 如权利要求 1所述的 X射线图像传感器, 其特征在于:所述电荷读出电路取得所述薄膜晶体管关闭和打开两个状态下的信 号, 分别存储在基准电荷寄存器和信号电荷寄存器中; 所述基准电荷寄 存器和所述信号电荷寄存器之间的信号差值被送入模拟数字转换电路。
- 3. 如权利要求 2所述的 X射线图像传感器, 其特征在于:行驱动控制电路控制所述薄膜晶体管的开启和关闭, 同时控制所述 基准电荷寄存器和所述信号电荷寄存器中的信号存储和输出。
- 4. 如权利要求 3所述的 X射线图像传感器, 其特征在于:所述 X射线图像传感器上还具有多路信号输出选择开关, 所述多路 信号输出选择开关受所述行驱动控制电路的控制, 通过开关的切换使不 同像元上的电荷泄放到同一个信号输出线。
- 5. 如权利要求 4所述的 X射线图像传感器, 其特征在于:所述行驱动控制电路粘接在玻璃基板上, 所述多路信号输出选择开 关集成在所述行驱动控制电路中, 行驱动信号线制作成与所述行驱动控 制电路所输入的指状行驱动电极相连接的方式。
- 6. 如权利要求 1所述的 X射线图像传感器, 其特征在于:所述电荷读出电路分布在所述 X射线图像传感器的左右两边, 每一 边的电荷读出电路只连接 1 /2总行数的像元。
- 7. 一种 X射线图像探测装置, 包括用于将 X射线转换成可见光的 闪烁晶体、 数据整合处理单元, 其特征在于:所述 X射线图像探测装置还包括多个如权利要求 1所述的 X射线 图像传感器, 所述 X射线图像传感器按矩阵方式排列;所述闪烁晶体正对 X射线源, 按矩阵方式排列的多个所述 X射线图 像传感器位于所述闪烁晶体的背面, 所述数据整合处理单元连接所述 X 射线图像传感器。
- 8. 如权利要求 7所述的 X射线图像探测装置, 其特征在于: 所述 X射线图像探测装置中还包括 X射线剂量传感器, 所述 X射 线剂量传感器位于所述 X射线图像传感器的背面。
- 9. 如权利要求 8所述的 X射线图像探测装置, 其特征在于: 所述 X射线剂量传感器通过 X射线剂量反馈输出单元产生反馈信号, 所述反馈信号提供给所述 X射线源。
- 10. 如权利要求 8所述的 X射线图像探测装置, 其特征在于: 所述 X射线图像探测装置的启动时间为 X射线剂量传感器开始积累 电荷的时刻, 所述 X射线图像探测装置的像元电荷积累结束时间为 X射 线剂量传感器达到剂量要求的时刻。
- 1 1 . 如权利要求 7所述的 X射线图像探测装置, 其特征在于: 所述 X射线图像探测装置中还包括抗散射线滤线栅, 所述抗散射线 滤线栅正对所述 X射线源, 所述闪烁晶体位于所述抗散射线滤线栅的背 面。
- 12. 如权利要求 1 1所述的 X射线图像探测装置, 其特征在于: 所述抗散射线滤线栅由虚拟滤线栅替代。
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WO2015058702A1 (zh) * | 2013-10-23 | 2015-04-30 | 曹红光 | 基于光子计数的辐射成像系统、方法及其设备 |
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2009
- 2009-12-16 WO PCT/CN2009/075637 patent/WO2011035513A1/zh active Application Filing
- 2009-12-16 CN CN2009801013468A patent/CN102099704B/zh active Active
- 2009-12-16 US US13/498,904 patent/US8674313B2/en active Active
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CN102099704B (zh) | 2013-07-03 |
DE112009005291T5 (de) | 2012-12-27 |
WO2011035513A1 (zh) | 2011-03-31 |
US8674313B2 (en) | 2014-03-18 |
US20120181439A1 (en) | 2012-07-19 |
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