公开(公告)号：EP1645868A1

公开(公告)日：2006-04-12

申请号：EP04738291.6

申请日：2004-06-25

申请人： Tsinghua University

发明人： AN, Jigang, Energy Science Bldg. ,  LIU, Yisi, Energy Science Bldg. ,  XIANG, Xincheng, Energy Science Bldg. ,  WU, Haifeng, Energy Science Bldg. ,  WU, Zhifang, Energy Science Bldg. ,  WANG, Liqiang, Energy Science Bldg.

IPC分类号： G01N23/04 ,  G21G4/04

CPC分类号： G01N23/046 ,  G01N23/04 ,  G01N2223/419 ,  G01V5/0016 ,  G01V5/005 ,  G21K5/10

摘要： Gamma radiation imaging system for non-destructive inspection of the luggage contains a DR sub-system, which obtains the projected image of the luggage by translationally scanning, and a CT sub-system, which obtains the tomograph image of the luggage by rotating scanning. Said DR sub-system includes a fixed gantry, a conveyor system, a radiation source mounted on the fixed gantry, front and back collimators, and the array detector. Said CT sub-system includes a rotating gantry, a conveyor system, a radiation source mounted on the rotating gantry, front and back collimators, and the array detector, wherein, the radiation source in said CT sub-system is 192 Ir or 75 Se radioactive isotope gamma source with high specific activity. Said gamma source is enclosed in a shield chamber with a projecting opening. The shield chamber is mounted on said rotating gantry. Said array detector is adapted for detecting gamma ray of 192 Ir or 75 Se radioactive isotope; The radiation source in said DR sub-system is 192 Ir or 75 Se radioactive isotope gamma source with high specific activity, said gamma source is enclosed in a shield chamber with a projecting opening. The shield chamber is mounted on said fixed gantry. Said array detector is adapted for detecting gamma ray of 192 Ir or 75 Se radioactive isotope.

摘要翻译： 用于行李无损检测的伽马射线成像系统包含通过平移扫描获取行李的投影图像的DR子系统和通过旋转扫描获得行李的断层图像的CT子系统。 所述DR子系统包括固定机架，输送机系统，安装在固定机架上的辐射源，前后准直仪和阵列检测器。 所述CT子系统包括旋转机架，输送机系统，安装在旋转机架上的辐射源，前后准直仪和阵列检测器，其中，所述CT子系统中的辐射源为192 Ir或75 Se 具有较高比活性的放射性同位素γ源。 所述伽马源被封闭在具有突出开口的屏蔽室中。 屏蔽室安装在所述旋转机架上。 所述阵列检测器适用于检测192 Ir或75 Se放射性同位素的伽马射线; 所述DR子系统中的辐射源是具有高比活度的192 Ir或75 Se放射性同位素γ源，所述伽马源封装在具有突出开口的屏蔽室中。 屏蔽室安装在所述固定机架上。 所述阵列检测器适用于检测192 Ir或75 Se放射性同位素的伽马射线。