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1. 发明申请

WO2011033439A1 DISTRIBUTED X-RAY SOURCE AND X-RAY IMAGING SYSTEM COMPRISING THE SAME 审中-公开
标题翻译：分布式X射线源和包含其的X射线成像系统
公开(公告)号：WO2011033439A1
公开(公告)日：2011-03-24
申请号：PCT/IB2010/054113
申请日：2010-09-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , LEWALTER, Astrid , PIETIG, Rainer , CHROST, Wolfgang
发明人： LEWALTER, Astrid , PIETIG, Rainer , CHROST, Wolfgang
IPC分类号： H01J35/06 , H01J35/28
CPC分类号： H01J35/28 , A61B6/025 , A61B6/4028 , A61B6/4488 , A61B6/502 , A61B6/508 , H01J35/065 , H01J35/12 , H01J2235/068 , H01J2235/1262
摘要： A distributed X-ray source (3) and an imaging system (1) comprising such an X-ray source (3) are proposed. The X-ray source (3) comprises an electron beam source arrangement (19) and an anode arrangement (17). The electron beam source arrangement (19) is adapted to emit electron beams (24) towards at least two locally distinct focal spots (27) on the anode arrangement (17). Therein, the X-ray source is adapted for displacing the anode arrangement (17) with respect to the electron beam source arrangement (19). While the provision of a plurality of focal spots allows acquisition of projection images under different projection angles thereby allowing reconstruction of three-dimensional X-ray images e.g. in tomosynthesis application, a displacement motion of the anode arrangement (17) with respect to the electron beam source arrangement (19) may allow for distributed heat flux to the anode arrangement thereby possibly reducing cooling requirements.
摘要翻译：提出了包括这样的X射线源（3）的分布式X射线源（3）和成像系统（1）。 X射线源（3）包括电子束源装置（19）和阳极装置（17）。电子束源装置（19）适于向阳极装置（17）上的至少两个局部不同的焦点（27）发射电子束（24）。其中，X射线源适于使阳极装置（17）相对于电子束源装置（19）移位。虽然提供多个焦斑允许在不同投影角度获取投影图像，从而允许重建三维X射线图像，例如，在层析合成应用中，阳极装置（17）相对于电子束源装置（19）的位移运动可以允许分配到阳极装置的热通量，从而可能降低冷却需求。

2. 发明申请

WO2009136349A2 X-Ray Examination System with Integrated Actuator Means for Performing Translational and/or Rotational Disuplacement Movements of at Least One X-Radiation Emitting Anode's Focal Spot Relative to a Stationary Reference Position and Means for Compensating Resulting Parallel and/or Angular Shifts of the Emitted X-Ray Beams 审中-公开
标题翻译：具有集成执行器装置的X射线检查系统，用于执行相对于固定参考位置和补偿装置的至少一个X射线发射阳极焦点的平移和/或旋转放大运动
公开(公告)号：WO2009136349A2
公开(公告)日：2009-11-12
申请号：PCT/IB2009/051814
申请日：2009-05-04
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , VOGTMEIER, Gereon , PIETIG, Rainer , LEWALTER, Astrid , BEHLING, Rolf K. O.
发明人： VOGTMEIER, Gereon , PIETIG, Rainer , LEWALTER, Astrid , BEHLING, Rolf K. O.
IPC分类号： A61B6/03 , H01J35/24
CPC分类号： H01J35/14 , A61B6/032 , A61B6/4021 , A61B6/4028 , A61B6/4085 , A61B6/4488 , H01J35/26 , H01J35/30
摘要： The present invention refers to X-ray systems for use in high-resolution imaging applications with an improved power rating and, more particularly, to a variety of system configurations for an X-ray based image acquisition system using an X-ray source of the rotary anode type or, alternatively, an array of spatially distributed X-ray sources fabricated in carbon nanotube (CNT) technology, thus allowing higher sampling rates for an improved temporal resolution of acquired CT images as needed for an exact reconstruction of fast moving objects (such as e.g. the myocard) from a set of acquired 2D projection data. According to the present invention, each X-ray source comprises at least one integrated actuator unit (206, 206', 206a or 206b) for performing at least one translational and/or rotational displacement by moving the position of the X-ray source's anode (204, 204', 204a' or 204b') relative to a stationary reference position, wherein the latter may e.g. be given by a mounting plate (207, 207a or 207b) or an electron beam emitting cathode (201, 201a or 201b) which provides an electron beam (202, 202a or 202b) impinging on said anode. This helps to overcome power limitations due to an overheating of the anode at its focal spot position (205). In addition to that, a focusing unit (203) for allowing an adapted focusing of the anode's focal spot (205) which compensates deviations in the focal spot size resulting from said anode displacements and/or a deflection means (211, 21 Ia or 21 Ib) for generating an electric and/or magnetic field deflecting the electron beam (202, 202a or 202b) in a direction opposite to the direction of the rotary anode's displacement movement may be provided.
摘要翻译：本发明涉及用于具有改进的额定功率的高分辨率成像应用中的X射线系统，更具体地，涉及使用X射线源的基于X射线的图像采集系统的各种系统配置旋转阳极类型或者替代地，以碳纳米管（CNT）技术制造的空间分布的X射线源的阵列，从而允许更高的采样速率，以用于快速移动物体的精确重建所需的所获取CT图像的时间分辨率（例如心肌）从一组获取的2D投影数据中获取。根据本发明，每个X射线源包括至少一个集成致动器单元（206,206'，206a或206b），用于通过移动X射线源的阳极的位置来执行至少一个平移和/或旋转位移（204,204'，204a'或204b'），其中后者可以例如由安装板（207,207a或207b）或电子束发射阴极（201,201a或201b）提供，其提供撞击在所述阳极上的电子束（202,202a或202b）。这有助于克服由于阳极在其焦点位置（205）处的过热而引起的功率限制。除此之外，聚焦单元（203）用于允许补偿阳极焦点（205）的适应聚焦，其补偿由所述阳极位移引起的焦点尺寸偏差和/或偏转装置（211,211a或21 可以提供用于产生沿着与旋转阳极的位移运动的方向相反的方向偏转电子束（202,202a或202b）的电和/或磁场的电流（Ib）。

3. 发明申请

WO2008053403A2 SWITCHING SCHEME FOR A STEREO ROTATING ANODE TUBE 审中-公开
标题翻译：立体旋转阳极管的切换方案
公开(公告)号：WO2008053403A2
公开(公告)日：2008-05-08
申请号：PCT/IB2007/054318
申请日：2007-10-24
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , PIETIG, Rainer , DAVID, Bernd , LEWALTER, Astrid
发明人： PIETIG, Rainer , DAVID, Bernd , LEWALTER, Astrid
IPC分类号： H05G1/70 , H01J35/26 , H01J35/10
CPC分类号： H05G1/70 , A61B6/027 , H01J35/10 , H01J35/26
摘要： For x-ray tubes the focal spot temperature is a critical factor. According to an exemplary embodiment of the present invention, an examination apparatus is provided which has a synchronisation unit providing an operation mode for a stereo tube in which the anode rotation frequency is synchronised with the switching frequency such that the switching frequency is a half integer multiple of the anode rotation frequency. This may lead to a significant reduction of the focal spot temperature.
摘要翻译：对于X射线管，焦点温度是关键因素。根据本发明的示例性实施例，提供了一种检查装置，其具有同步单元，该同步单元提供立体管的操作模式，其中阳极旋转频率与开关频率同步，使得开关频率为半个整数倍的阳极旋转频率。这可能导致焦点温度的显着降低。

4. 发明申请

WO2009022292A2 HYBRID DESIGN OF AN ANODE DISK STRUCTURE FOR HIGH POWER X-RAY TUBE CONFIGURATIONS OF THE ROTARY-ANODE TYPE 审中-公开
标题翻译：旋转阳极型高功率X射线管配置的ANODE盘结构的混合设计
公开(公告)号：WO2009022292A2
公开(公告)日：2009-02-19
申请号：PCT/IB2008/053225
申请日：2008-08-12
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , TECHNISCHE UNIVERSITÄT DRESDEN , LEWALTER, Astrid , PIETIG, Rainer , LANGKAMP, Albert , RICHTER, Heiko , BEHNISCH, Thomas , HUFENBACH, Werner , BEHLING, Rolf, K., O. , BATHE, Christoph
发明人： LEWALTER, Astrid , PIETIG, Rainer , LANGKAMP, Albert , RICHTER, Heiko , BEHNISCH, Thomas , HUFENBACH, Werner , BEHLING, Rolf, K., O. , BATHE, Christoph
IPC分类号： H01J35/10
CPC分类号： H01J35/108 , H01J2235/081 , H01J2235/088 , H01J2235/1006
摘要： The present invention is related to high power X-ray sources, in particular to those ones that are equipped with rotating X-ray anodes capable of delivering a much higher short time peak power than conventional rotating X-ray anodes according to the prior art. The herewith proposed design principle thereby aims at overcoming thermal limitation of peak power by allowing extremely fast rotation of the anode and by introducing a lightweight material with high thermal conductivity (2) in the region adjacent to the focal track material (4). The extremely fast rotation is enabled by providing sections of the rotary anode disk made of anisotropic high specific strength materials with high thermal stability (1, 3, 6) which will be specifically adapted to the high stresses building up when the anode is operated, as for example fiber-reinforced ceramic materials. An X-ray system equipped with a high peak power anode according to the present invention will be capable of high speed image acquisition with high resolution and high coverage. Such a high-speed rotary anode disk can advantageously be applied in X-ray tubes for material inspection or medical radiography, for X-ray imaging applications which are needed for acquiring image data of moving objects in real-time, such as e.g. in the scope of cardiac CT, or for any other X-ray imaging application that requires high-speed image data acquisition. According to a further exemplary embodiment, the invention is directed to a rotary anode disk divided into distinct anode segments (10a, 10b) with adjacent anode segments which may e.g. be limited to each other by straight radial (14a) or S- shaped slits (14b) ranging from the inner anode bulk (1) to the inner radial edge of the anode disk's outer frame section (3). Other exemplary embodiments of the present invention relate to a rotary anode disk structure design which comprises liquid metal conductors (16a) between the inner anode bulk (1) and a rotary shaft (12) needed for rotating the rotary anode disk about its rotational axis (5), said liquid metal conductors (16a) providing a liquid metal connection between the rotary anode and its rotary shaft (12), or to a rotary anode disk structure which comprises a sliding radial connection (17) and a flexible heat conductor (18) between the inner anode bulk (1) and the rotary shaft (12).
摘要翻译：本发明涉及高功率X射线源，特别是与根据现有技术的传统旋转X射线阳极相比，能够传送高得多的短时峰值功率的旋转X射线阳极的X射线源。因此，本文提出的设计原理旨在通过允许阳极极快地旋转并且通过在邻近焦点轨道材料（4）的区域中引入具有高导热性的轻质材料（2）来克服峰值功率的热限制。通过提供由具有高热稳定性（1,3,6）的各向异性高比强度材料制成的旋转阳极盘的部分实现极快的旋转，这将特别适用于在阳极操作时建立的高应力，如例如纤维增强陶瓷材料。具有根据本发明的高峰值功率阳极的X射线系统将能够以高分辨率和高覆盖率进行高速图像采集。这样的高速旋转阳极盘可以有利地应用于用于材料检查或医学放射照相的X射线管中，用于实时获取移动物体的图像数据所需的X射线成像应用，例如。在心脏CT的范围内，或者需要高速图像数据采集的任何其他X射线成像应用。根据另一示例性实施例，本发明涉及一种旋转阳极盘，其分成具有相邻阳极段的不同阳极段（10a，10b）通过从内阳极体（1）到阳极盘的外框部（3）的内径向边缘的直径（14a）或S形狭缝（14b）彼此限制。本发明的其它示例性实施例涉及一种旋转阳极盘结构设计，其包括在内阳极体（1）和旋转阳极盘绕其旋转轴线旋转所需的旋转轴（12）之间的液态金属导体（16a） 5），所述液态金属导体（16a）在旋转阳极和其旋转轴（12）之间提供液态金属连接，或旋转阳极盘结构，其包括滑动径向连接（17）和柔性热导体（18））在内部阳极体（1）和旋转轴（12）之间。

5. 发明申请

WO2007129249A2 ROTATING ANODE X-RAY TUBE WITH A SADDLE SHAPED ANODE 审中-公开
标题翻译：旋转阳极X射线管与一个形状的阳极阳极
公开(公告)号：WO2007129249A2
公开(公告)日：2007-11-15
申请号：PCT/IB2007/051561
申请日：2007-04-26
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , PIETIG, Rainer , LEWALTER, Astrid
发明人： PIETIG, Rainer , LEWALTER, Astrid
IPC分类号： H01J35/00 , A61B6/03
CPC分类号： H01J35/10 , A61B6/027 , A61B6/032 , A61B6/4028 , A61B6/503
摘要： The rotating anode x-ray tube comprises an anode, whose focal track has the shape of a saddle trajectory. A proper anode angle to enable a high power line focus is always realised along the focal path on the anode. The x-ray tube is for CT scanners and enables a movement of the focal spot along the patient axis during gantry rotation. In this way, cone beam artefacts due to the reconstruction may be avoided.
摘要翻译：旋转阳极x射线管包括阳极，其焦点轨迹具有鞍形轨迹的形状。始终沿着阳极上的焦点路径实现适当的阳极角，以实现高功率线焦点。 X射线管适用于CT扫描仪，并可在机架旋转期间使焦点沿病人轴线移动。以这种方式，可以避免由于重构造成的锥形束伪影。

6. 发明申请

WO2005064634A1 ELEKTRONISCHES GERÄT MIT EINEM MIKRO-ELEKTROMECHANISCHEN SCHALTER AUS PIEZOELEKTRISCHEM MATERIAL 审中-公开
标题翻译：用微机电开关OFF压电材料电子设备
公开(公告)号：WO2005064634A1
公开(公告)日：2005-07-14
申请号：PCT/IB2004/052881
申请日：2004-12-21
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , PELZER, Heiko , STEENEKEN, Peter, G. , LEWALTER, Astrid
发明人： PELZER, Heiko , STEENEKEN, Peter, G. , LEWALTER, Astrid
IPC分类号： H01H57/00
CPC分类号： H01H57/00 , H01G5/16 , H01G5/40 , H01H1/0036 , H01H2057/006 , H01L41/0933
摘要： Ein elektronisches Gerät enthält einen mikroelektromechanischen (MEMS) Schalter, der ein piezoelektrisches Element mit einer piezoelektrischen Schicht (12) zwischen einer ersten und einer zweiten Elektrodenschicht (11,13) umfasst,wobei zumindest eine der Elektrodenschichten zu separaten Elektroden (41,42,43;51,52,53) strukturiert ist, deren Potentiale unabhängig voneinander gesteuert werden können.
摘要翻译：一种电子装置包括微机电（MEMS）开关，包括具有第一和第二电极层（11,13）之间的压电层（12）的压电元件中，电极层以分离电极，其中至少一个（41,42,43 ; 51,52,53）被构造，其电势可被独立地控制。

7. 发明申请

WO2007066243A3 SYSTEMS AND METHODS FOR SCANNING AND DATA ACQUISITION IN COMPUTED TOMOGRAPHY (CT) APPLICATIONS 审中-公开
公开(公告)号：WO2007066243A3
公开(公告)日：2007-06-14
申请号：PCT/IB2006/053331
申请日：2006-09-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , U.S. PHILIPS CORPORATION , LEWALTER, Astrid , PIETIG, Rainer , ZEITLER, Guenter , ECK, Kai , HERRMANN, Christoph , KIEWITT, Rainer , LOEF, Christoph , MUELHENS, Oliver , RIBBING, Carolina , MATTHIAS, Simon , WISCHHUSEN, Olaf , ROSE, Georg
发明人： LEWALTER, Astrid , PIETIG, Rainer , ZEITLER, Guenter , ECK, Kai , HERRMANN, Christoph , KIEWITT, Rainer , LOEF, Christoph , MUELHENS, Oliver , RIBBING, Carolina , MATTHIAS, Simon , WISCHHUSEN, Olaf , ROSE, Georg
IPC分类号： A61B6/03
摘要： Systems and methods for data acquisition in computed tomography (CT) applications are provided. The systems and methods are particularly adapted for scanning and acquiring/processing data in connection with high-power cone-beam CT applications. The electron beam is moved/scanned along the anode surface to multiple focal positions. Data acquisition for a full projection at one focus position and one view angle is achieved by activating each focus position multiple times during the data acquisition for one angle of the gantry. The detector array and associated data processing system are adapted to rapidly switch between the different focus positions during the acquisitions for one view angle and to collect all data belonging to the same projection into the same data set. Adaptive electron optics are utilized to move/scan the electron beam along the anode surface to the various focus positions. Alternatively, a plurality of cathodes may be provided for respective focus positions and the system may support fast switching therebetween to achieve desirably short spot times. The disclosed CT system permits greater power densities without risk of heat damage to the anode and effectively increases the track velocity of the electron beam on the anode surface. The CT system and associated data acquisition methods have particular utility in CT applications requiring increased time resolution and/or spatial resolution, e.g., cardiac CT applications.

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