CN2343971Y - 低能量x射线阵列探测器 - Google Patents
低能量x射线阵列探测器 Download PDFInfo
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- CN2343971Y CN2343971Y CN 98228460 CN98228460U CN2343971Y CN 2343971 Y CN2343971 Y CN 2343971Y CN 98228460 CN98228460 CN 98228460 CN 98228460 U CN98228460 U CN 98228460U CN 2343971 Y CN2343971 Y CN 2343971Y
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Abstract
本实用新型为低能X射线阵列探测器。其电离室壳体2有入射窗口4,壳体内有电离室电极1和电离室阵列电极3。阵列电极3由若干条形电极7排列组成,条形电极7之间只有空气间隙。
Description
本实用新型与用于放射诊断的仪器有关,尤其与立体放射诊断的低能量X射线阵列探测器有关。
已有的西门子公司的电高室阵列探测器用于CT机,其能量较高(150Kev以上),对孕妇作常规检查不安全;由于能量较高,为防电子窜扰,电离室阵列电极间装有隔板,阵列电极的制造较困难,制造成本较高;加上隔板将形成死区,影响仪器的空间分辨率。电离室壳体的窗口材料为不锈钢薄板,对X射线的吸收和干扰较大,电子容易产生窜扰。
本实用新型的目的是提供一种结构简单,制造容易,成本低廉,对孕妇作常规检查安全的低能量X射线阵列探测器。
本实用新型是这样实现的:电离室壳体2有入射窗口4,壳体内有电离室电极1和电离室阵列电极3,电离室阵列电极3由若干条形电极7排列组成,条形电极7之间只有空气间隙。
本实用新型的入射窗口4由对X射线吸收较小的板材制成。
本实用新型的X射线能量≤100Kev。
本实用新型的条形电极之间只有空气间隙而没有隔板,不会形成死区,空间分辩率高。没有隔板、电极的制造容易,制造成本可降低,窗口材料采用对X射线吸收较小的Be、Ti等板材,可保证被准直后的X射线很好地进入电离室内,最大限度减小窜扰,设计为低能量X射线探测、用于孕妇的常规检查安全。也可用于不同能量的X射线的探测。
图1为本实用新型的工作原理图。
图2为电离室结构图。
图3为图2的左视剖视图。
图4为图2的俯视剖视图。
如下是本实用新型的实施例:
本实用新型可作为位址灵敏探测器,具有如下特点:
1、无电离室间的隔断。
2、仅适用于低能X射线探测。
3、电离室内可对不同的探测X射线能量充以不同气体和不同压力,以保证绝大多数次级电子能量只损失在一个探测器内。
如:对100Kev的X射线可充以1.5MPa的Xe气来探测。
4、可以推论:本实用新型可用于不同能量X射的探测。
工作原理为:准直的X射线由窗口4射入。窗口由对X射线吸收较小的材料制成,如:Be、Ti、Al等。X射线在电极1、3间形成电离,电极1、3间加有高电压,电离电流由电离室阵列电极3引出,进行测量。由于电极3由多个构成阵列,因此称为阵列探测器。
Claims (3)
1、一种低能X射线阵列探测器,电离室壳体(2)有入射窗口(4),壳体内有电离室电极(1)和电高室阵列电极(3),其特征在于电离室阵列电极(3)由若干条形电极(7)排列组成,条形电极(7)之间只有空气间隙。
2、根据权利要求1所述的探测器,其特征在于入射窗口(4)由对X射线吸收较小的板材制成。
3、根据权利要求1或2所述的探测器,其特征在于X射线能量≤100Kev。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 98228460 CN2343971Y (zh) | 1998-03-18 | 1998-03-18 | 低能量x射线阵列探测器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN 98228460 CN2343971Y (zh) | 1998-03-18 | 1998-03-18 | 低能量x射线阵列探测器 |
Publications (1)
Publication Number | Publication Date |
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CN2343971Y true CN2343971Y (zh) | 1999-10-20 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 98228460 Expired - Fee Related CN2343971Y (zh) | 1998-03-18 | 1998-03-18 | 低能量x射线阵列探测器 |
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CN (1) | CN2343971Y (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101156782B (zh) * | 2006-10-03 | 2012-05-30 | 通用电气公司 | 数字x射线探测器 |
TWI414266B (zh) * | 2006-02-01 | 2013-11-11 | Ethicon Endo Surgery Inc | 用於吻合術之橢圓形管腔內手術釘合器 |
-
1998
- 1998-03-18 CN CN 98228460 patent/CN2343971Y/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI414266B (zh) * | 2006-02-01 | 2013-11-11 | Ethicon Endo Surgery Inc | 用於吻合術之橢圓形管腔內手術釘合器 |
CN101156782B (zh) * | 2006-10-03 | 2012-05-30 | 通用电气公司 | 数字x射线探测器 |
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