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1. 发明申请

WO2005010916A3 SHAPED ANODE X-RAY TUBE 审中-公开
标题翻译：形状阳极X射线管
公开(公告)号：WO2005010916A3
公开(公告)日：2006-03-23
申请号：PCT/IB2004002424
申请日：2004-07-16
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS CORP , LEVENE SIMHA , MALAMUD GABRIEL , ALTMAN AMI
发明人： LEVENE SIMHA , MALAMUD GABRIEL , ALTMAN AMI
IPC分类号： H01J35/02 , H01J35/10
CPC分类号： H01J35/02 , H01J35/06 , H01J35/10 , H01J35/14 , H01J2235/086
摘要： An x-ray tube (16) suitable for use in a computed tomography (CT) scanner (10) includes an envelope (42) which defines an evacuated chamber. An anode (40) and a cathode assembly (70) are disposed within the chamber. The anode defines a target area (56) which is struck by electrons (52) emitted by a filament (54) of the cathode assembly and emits x-rays (46). The target area lies partially on a first annular portion (80) which is disposed at first angle (a) relative to a plane perpendicular to an axis of rotation (R) of the anode, and partially on a second portion (82,120) which is radially spaced from the first portion and disposed at a second angle (ß), relative to the plane. The second angle is greater than the first angle. The portions of different slope allow the x-ray tube to take advantage of a shallow angle, while minimizing the heel effect.
摘要翻译：适用于计算机断层摄影（CT）扫描仪（10）的X射线管（16）包括限定抽真空室的外壳（42）。阳极（40）和阴极组件（70）设置在室内。阳极限定由阴极组件的灯丝（54）发射的电子（52）撞击并发射x射线（46）的目标区域（56）。目标区域部分地位于第一环形部分（80）上，第一环形部分（80）相对于垂直于阳极旋转轴线（R）的平面以第一角度（a）设置，并且部分地位于第二部分（82,120）上，第二部分与第一部分径向间隔开并相对于该平面以第二角度（β）设置。第二角度大于第一角度。不同斜率的部分允许x射线管利用浅角度，同时使脚跟效应最小化。

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