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1. 发明公开

EP0924742A2 Means for preventing excessive heating of an X-ray tube window 有权
标题翻译：装置，以避免X射线管的窗口的过热
公开(公告)号：EP0924742A2
公开(公告)日：1999-06-23
申请号：EP98308723.0
申请日：1998-10-26
申请人： PICKER INTERNATIONAL, INC.
发明人： Harris, Jason P. , Carlson, Gerard J. , Miller, Lester D.
IPC分类号： H01J35/18
CPC分类号： H01J35/18 , H01J2235/168
摘要： An x-ray tube includes an envelope (13) defining an evacuated chamber and having a window (30) transmissive to x-rays. An anode assembly and a cathode assembly operate within the envelope to produce x-rays which travel through the window transmissive to x-rays towards a patient or subject under examination. A shield transmissive (32) to x-rays is coupled to the envelope and positioned such that x-rays travelling through the window transmissive to x-rays must first travel through the shield. The shield prevents substantially all secondary electrons created during the production of x-rays from coming into contact with the window transmissive to x-rays thereby preventing excessive heating of the window transmissive to x-rays. An electrode (50) defined by the envelope in a region proximate the window transmissive to x-rays may additionally or alternatively be used to prevent secondary electrons from reaching the window transmissive to x-rays.

2. 发明公开

EP0924742A3 Means for preventing excessive heating of an X-ray tube window 有权
标题翻译： Einrichtung zur Vermeidung einerÜberhitzungdes Fensters einerRöntgenröhre
公开(公告)号：EP0924742A3
公开(公告)日：2000-01-05
申请号：EP98308723.0
申请日：1998-10-26
申请人： PICKER INTERNATIONAL, INC.
发明人： Harris, Jason P. , Carlson, Gerard J. , Miller, Lester D.
IPC分类号： H01J35/18
CPC分类号： H01J35/18 , H01J2235/168
摘要： An x-ray tube includes an envelope (13) defining an evacuated chamber and having a window (30) transmissive to x-rays. An anode assembly and a cathode assembly operate within the envelope to produce x-rays which travel through the window transmissive to x-rays towards a patient or subject under examination. A shield transmissive (32) to x-rays is coupled to the envelope and positioned such that x-rays travelling through the window transmissive to x-rays must first travel through the shield. The shield prevents substantially all secondary electrons created during the production of x-rays from coming into contact with the window transmissive to x-rays thereby preventing excessive heating of the window transmissive to x-rays. An electrode (50) defined by the envelope in a region proximate the window transmissive to x-rays may additionally or alternatively be used to prevent secondary electrons from reaching the window transmissive to x-rays.
摘要翻译： X射线管包括限定抽真空室并具有透射X射线的窗口（30）的外壳（13）。阳极组件和阴极组件在外壳内操作以产生X射线，X射线穿过透射窗口的X射线朝向被检查的患者或受试者。对X射线的屏蔽透射（32）耦合到外壳并定位成使得穿过透射到x射线的窗口的x射线必须首先穿过屏蔽。屏蔽层防止在X射线生成期间产生的所有二次电子与透射X射线的窗口接触，从而防止透射X射线的窗口的过度加热。在靠近x射线的窗口附近的区域中由外壳限定的电极（50）可以附加地或替代地用于防止二次电子到达透射X射线的窗口。

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