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 PDF

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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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energy
ray
ionization chamber
electrode
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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

低能量X射线阵列探测器
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。
CN 98228460 1998-03-18 1998-03-18 低能量x射线阵列探测器 Expired - Fee Related CN2343971Y (zh)

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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

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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

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CN2343971Y true CN2343971Y (zh) 1999-10-20

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Cited By (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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