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1.发明公开BLANKING OF ELECTRON BEAM DURING DYNAMIC FOCAL SPOT JUMPING IN CIRCUMFERENTIAL DIRECTION OF A ROTATING ANODE DISK OF AN X-RAY TUBE 审中-公开消隐DYNAMIC焦斑跳电子IN方向的X射线管的旋转阳极板的范围
公开(公告)号：EP2852965A1
公开(公告)日：2015-04-01
申请号：EP13729103.5
申请日：2013-05-17
CPC分类号： H01J35/14 , A61B6/4021 , A61B6/405 , A61B6/4441 , A61B6/54 , G01N23/2252 , H01J35/24 , H01J35/30 , H01J35/305 , H05G1/34 , H05G1/46
摘要： An apparatus (210) and method for total or partial blanking of an electron beam (e) during a jump between the 2 or more positions of a dynamic focal spot (FP) movement in circumferential direction of the electron beam impinging on the focal track (FPTR) of a rotating target disk (230) of a X-ray tube (110). Alternatively the focal spot size can be increased during this short time interval. Overheating of the anode at the focal spot can be prevented.
摘要翻译： （一种动态焦斑的两个或多个位置之间（FP）运动中的电子束的圆周方向入射到焦点轨迹上的跳跃期间用于电子束（或多个）的全部或部分消隐装置（210）和方法 FPTR）一个X射线管（110）的旋转目标盘（230）的。 可替换地，焦斑尺寸可以这样短的时间间隔期间被增加。 在焦斑阳极的过热可以被防止。
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公开(公告)号：EP3496128A1
公开(公告)日：2019-06-12
申请号：EP17206337.2
申请日：2017-12-11
IPC分类号： H01J35/10
摘要： The rotatable anode of a rotating anode X-ray source has demanding requirements placed upon it. For example, it may rotate at a frequency as high as 200 Hz. X-ray emission is stimulated by applying a large voltage to the cathode, causing electrons to collide with the focal track. The focal spot generated at the electron impact position may have a peak temperature between 2000°C and 3000°C. The constant rotation of the rotating anode protects the focal track to some extent, however the average temperature of the focal track immediately following a CT acquisition protocol may still be around 1500°C. Therefore, demanding requirements are placed upon the design of the rotating anode.
The present application proposes a multi-layer coating for the target region of a rotating X-ray anode which improves mechanical resilience and thermal resilience, whilst reducing the amount of expensive refractory metals required.
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