专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08693621B2 Source and/or detector positioning system 有权
标题翻译：源和/或探测器定位系统
公开(公告)号：US08693621B2
公开(公告)日：2014-04-08
申请号：US12990278
申请日：2009-04-30
申请人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
发明人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
IPC分类号： A61B6/03
CPC分类号： A61B6/4447 , A61B6/06 , A61B6/4021
摘要： A medical imaging system includes a generally stationary gantry (102) and a rotating gantry (106), rotatably supported by the generally stationary gantry (102), that rotates about a longitudinal axis around an examination region. The medical imaging system further includes a radiation source (112) that emits a radiation beam that traverses the examination region. The radiation source (112) is moveably affixed to the rotating gantry (106) so as to translate in a direction of the longitudinal axis with respect to the rotating gantry (106) while scanning a subject in the examination region. The medical imaging system further includes a detector array (120) that detects the radiation beam that traverses the examination region and generates a signal indicative thereof. The detector array (120) is moveably affixed to the rotating gantry (106) so as to move in coordination with the radiation source (112) while scanning the subject in the examination region.
摘要翻译：医疗成像系统包括大致固定的机架（102）和旋转支架（106），旋转机架（106）由大体上固定的机架（102）可旋转地支撑，围绕检查区域围绕纵向轴线旋转。医疗成像系统还包括发射穿过检查区域的辐射束的辐射源（112）。辐射源（112）可移动地固定到旋转机架（106）上，以便在扫描检查区域中的被检体的同时相对于旋转台架（106）在纵向轴线的方向上平移。医疗成像系统还包括检测器阵列（120），其检测穿过检查区域的辐射束并产生指示其的信号。检测器阵列（120）可移动地固定到旋转机架（106），以在扫描检查区域中的对象时与辐射源（112）协调地移动。

2. 发明申请

US20110058644A1 SOURCE AND/OR DETECTOR POSITIONING SYSTEM 有权
标题翻译：源和/或检测器定位系统
公开(公告)号：US20110058644A1
公开(公告)日：2011-03-10
申请号：US12990278
申请日：2009-04-30
申请人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
发明人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
IPC分类号： A61B6/03 , G01T1/24
CPC分类号： A61B6/4447 , A61B6/06 , A61B6/4021
摘要： A medical imaging system includes a generally stationary gantry (102) and a rotating gantry (106), rotatably supported by the generally stationary gantry (102), that rotates about a longitudinal axis around an examination region. The medical imaging system further includes a radiation source (112) that emits a radiation beam that traverses the examination region. The radiation source (112) is moveably affixed to the rotating gantry (106) so as to translate in a direction of the longitudinal axis with respect to the rotating gantry (106) while scanning a subject in the examination region. The medical imaging system further includes a detector array (120) that detects the radiation beam that traverses the examination region and generates a signal indicative thereof. The detector array (120) is moveably affixed to the rotating gantry (106) so as to move in coordination with the radiation source (112) while scanning the subject in the examination region.
摘要翻译：医疗成像系统包括大致固定的机架（102）和旋转支架（106），旋转机架（106）由大体上固定的机架（102）可旋转地支撑，围绕检查区域围绕纵向轴线旋转。医疗成像系统还包括发射穿过检查区域的辐射束的辐射源（112）。辐射源（112）可移动地固定到旋转机架（106）上，以便在扫描检查区域中的被检体的同时相对于旋转台架（106）在纵向轴线的方向上平移。医疗成像系统还包括检测器阵列（120），其检测穿过检查区域的辐射束并产生指示其的信号。检测器阵列（120）可移动地固定到旋转机架（106），以在扫描检查区域中的对象时与辐射源（112）协调地移动。

3. 发明授权

US08401144B2 Method and apparatus for correcting artifacts in circular CT scans 有权
标题翻译：用于校正圆形CT扫描中的伪影的方法和装置
公开(公告)号：US08401144B2
公开(公告)日：2013-03-19
申请号：US12535231
申请日：2009-08-04
申请人： Peter Forthmann , Axel Thran , Claas Bontus , Roland Proksa
发明人： Peter Forthmann , Axel Thran , Claas Bontus , Roland Proksa
IPC分类号： G01N23/083 , H05G1/60
CPC分类号： A61B6/032 , A61B6/027 , A61B6/488 , G06T5/50 , G06T11/005 , G06T2207/10072 , G06T2211/432
摘要： A scanning method and apparatus useful for correcting artifacts which may appear in a primary short circular CT scan are provided. A secondary helical scan performed on a stationary subject, or a secondary circular scan, may be used to correct for artifacts. The secondary scan may be performed with a smaller radiation dosage than the primary circular CT scan.
摘要翻译：提供了可用于校正可能出现在初级短圆形CT扫描中的伪影的扫描方法和装置。可以使用在静止对象上进行的辅助螺旋扫描或二次循环扫描来校正伪像。次扫描可以以比初级圆形CT扫描更小的辐射剂量进行。

4. 发明申请

US20100296624A1 HIGH-FREQUENCY SADDLE-TRAJECTORY FOR AXIAL CARDIAC CT 审中-公开
标题翻译：用于轴向心脏CT的高频脊索
公开(公告)号：US20100296624A1
公开(公告)日：2010-11-25
申请号：US12445765
申请日：2007-10-16
申请人： Claas Bontus , Roland Proksa , Thomas Koehler
发明人： Claas Bontus , Roland Proksa , Thomas Koehler
IPC分类号： A61B6/03
CPC分类号： A61B6/503 , A61B6/027 , A61B6/032 , A61B6/4021 , A61B6/4085 , A61B6/541
摘要： If, in cardiac CT, the time window becomes shorter than the time required for a complete rotation of the gantry, the volume that can be reconstructed becomes small due to the non-existence of related pi-lines. According to an exemplary embodiment of the present invention, an examination apparatus is provided which generates a radiation beam oscillating in z-direction with an oscillation frequency higher than the rotational frequency of the source. This may provide for an exact image reconstruction of large volumes.
摘要翻译：如果在心脏CT中，时间窗口变得比台架完全旋转所需的时间短，则由于不存在相关的pi线，可重构的体积变小。根据本发明的示例性实施例，提供了一种检查装置，其产生以比源的旋转频率高的振荡频率在z方向上振荡的辐射束。这可以提供大体积的精确图像重建。

5. 发明授权

US07672490B2 Motion artifacts compensation 失效
标题翻译：运动假象补偿
公开(公告)号：US07672490B2
公开(公告)日：2010-03-02
申请号：US10597871
申请日：2005-02-04
申请人： Thomas Kohler , Roland Proksa , Claas Bontus
发明人： Thomas Kohler , Roland Proksa , Claas Bontus
IPC分类号： G06K9/00 , A61B6/00 , A61B5/05
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/412
摘要： Motion is one of the most critical sources of artifacts in helical conebeam CT. By comparing opposite rays corresponding to projection data, the amount of motion may be estimated and, in the following suppression of corresponding motion artifacts may be performed according to an exemplary embodiment of the present invention. The method of motion artifact compensation may be implemented in both approximate reconstruction algorithms and exact reconstruction algorithms. Advantageously, motion during the data acquisition is detected automatically and related motion artifacts may be suppressed adaptively.
摘要翻译：运动是螺旋锥束CT中最重要的文物来源之一。通过比较与投影数据相对应的相对射线，可以估计运动量，并且可以根据本发明的示例性实施例来执行以下对相应运动伪像的抑制。运动伪像补偿的方法可以在近似重建算法和精确重构算法中实现。有利地，自动检测数据采集期间的运动，并且可以自适应地抑制相关的运动伪像。

6. 发明申请

US20070177713A1 Motion artifacts compensation 失效
标题翻译：运动假象补偿
公开(公告)号：US20070177713A1
公开(公告)日：2007-08-02
申请号：US10597871
申请日：2005-02-04
申请人： Thomas Kohler , Roland Proksa , Claas Bontus
发明人： Thomas Kohler , Roland Proksa , Claas Bontus
IPC分类号： H05G1/60 , G06K9/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/412
摘要： Motion is one of the most critical sources of artifacts in helical conebeam CT. By comparing opposite rays corresponding to projection data, the amount of motion may be estimated and, in the following suppression of corresponding motion artifacts may be performed according to an exemplary embodiment of the present invention. The method of motion artifact compensation may be implemented in both approximate reconstruction algorithms and exact reconstruction algorithms. Advantageously, motion during the data acquisition is detected automatically and related motion artifacts may be suppressed adaptively.
摘要翻译：运动是螺旋锥束CT中最重要的文物来源之一。通过比较与投影数据相对应的相对射线，可以估计运动量，并且可以根据本发明的示例性实施例来执行以下对相应运动伪像的抑制。运动伪像补偿的方法可以在近似重建算法和精确重构算法中实现。有利地，自动检测数据采集期间的运动，并且可以自适应地抑制相关的运动伪像。

7. 发明授权

US07580499B2 Coherent-scatter computed tomography 失效
标题翻译：相干散射计算机断层扫描
公开(公告)号：US07580499B2
公开(公告)日：2009-08-25
申请号：US10575584
申请日：2004-10-05
申请人： Udo Van Stevendaal , Claas Bontus , Peter Forthmann
发明人： Udo Van Stevendaal , Claas Bontus , Peter Forthmann
IPC分类号： A61B6/03
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416 , Y10S378/901
摘要： Known reconstruction techniques from coherent scattered x-rays apply non-exact reconstruction techniques. According to the present invention, a relatively wide spectrum of wave-vector transfers q of the scattered x-ray photons is acquired. The projection data is interpreted as line integrals in the x y-q space and the projection data is resorted to correspond to an acquisition along any source trajectory. Due to this, an exact helical reconstruction algorithms may be applied and redundant data may be used to obtain a better image quality.
摘要翻译：来自相干散射X射线的已知重建技术应用非精确重建技术。根据本发明，获得了散射的x射线光子的相对宽的波矢量传输q。投影数据被解释为x y-q空间中的线积分，并且投影数据被用来对应于沿着任何源轨迹的获取。因此，可以应用精确的螺旋重建算法，并且可以使用冗余数据来获得更好的图像质量。

8. 发明申请

US20090238328A1 X-RAY TUBE WITH OSCILLATING ANODE 审中-公开
标题翻译：带振动阳极的X射线管
公开(公告)号：US20090238328A1
公开(公告)日：2009-09-24
申请号：US12299477
申请日：2007-04-25
申请人： Peter Forthmann , Claas Bontus , Thomas Köhler
发明人： Peter Forthmann , Claas Bontus , Thomas Köhler
IPC分类号： A61B6/00 , H01J35/00 , H01J35/30
CPC分类号： A61B6/032 , A61B6/4021 , H01J35/101 , H01J35/26 , H01J35/28 , H01J2235/10
摘要： It is described an X-ray tube (205), in particular for use in computed tomography, comprising an electron source (250), for generating an electron beam (255), an electron deflection device (256) for deflecting the generated electron beam (255), a control unit (257) being coupled to the electron deflection device (256) for spatially controlling the deflection, and an anode (206), which is arranged such that the electron beam (255) impinges onto a focal spot of a surface of the anode (206). Thereby the anode (206) is movable along a z-axis in an oscillating manner, the surface of the anode (206) is oriented oblique with respect to the z-axis, and the control unit (257) is adapted to spatially control the focal spot (255 a) in such a manner that the focal spot moves essentially in a discrete manner between a first focal spot position (106a, 406a) having a first z-coordinate and a second focal spot position (106b, 406b) having a second z-coordinate being different from the first z-coordinate.
摘要翻译：描述了一种特别用于计算机断层摄影的X射线管（205），包括用于产生电子束（255）的电子源（250），用于偏转生成的电子束的电子偏转装置（256）（255），耦合到电子偏转装置（256）的空间控制偏转的控制单元（257）和阳极（206），其布置成使得电子束（255）撞击到阳极的表面（206）。因此，阳极（206）可以以振荡方式沿Z轴移动，阳极（206）的表面相对于z轴倾斜定向，并且控制单元（257）适于空间控制焦点（255a），使得焦点基本上以离散的方式移动在具有第一z坐标的第一焦点位置（106a，406a）和具有第一焦点位置（106b，406b）之间的焦点第二z坐标与第一z坐标不同。

9. 发明申请

US20070140410A1 Coherent-scatter computed tomography 失效
标题翻译：相干散射计算机断层扫描
公开(公告)号：US20070140410A1
公开(公告)日：2007-06-21
申请号：US10575584
申请日：2004-10-05
申请人： Udo Van Stevendaal , Claas Bontus , Peter Forthmann
发明人： Udo Van Stevendaal , Claas Bontus , Peter Forthmann
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416 , Y10S378/901
摘要： Known reconstruction techniques from coherent scattered x-rays apply non-exact reconstruction techniques. According to the present invention, a relatively wide spectrum of wave-vector transfers q of the scattered x-ray photons is acquired. The projection data is interpreted as line integrals in the x y-q space and the projection data is resorted to correspond to an acquisition along any source trajectory. Due to this, an exact helical reconstruction algorithms may be applied and redundant data may be used to obtain a better image quality.
摘要翻译：来自相干散射X射线的已知重建技术应用非精确重建技术。根据本发明，获得了散射的x射线光子的相对宽的波矢量传输q。投影数据被解释为x y-q空间中的线积分，并且投影数据被用来对应于沿着任何源轨迹的获取。因此，可以应用精确的螺旋重建算法，并且可以使用冗余数据来获得更好的图像质量。

10. 发明授权

US07627081B2 Computer tomography apparatus with multiple x-ray radiation sources 失效
标题翻译：具有多个X射线辐射源的计算机断层摄影装置
公开(公告)号：US07627081B2
公开(公告)日：2009-12-01
申请号：US11817031
申请日：2006-02-20
申请人： Claas Bontus
发明人： Claas Bontus
IPC分类号： H05G1/00 , H05G1/02
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4007 , A61B6/4014 , A61B6/4488 , G01N23/046 , G01N2223/419
摘要： A computer tomography apparatus (100) for examination of an object of interest (107), the computer tomography apparatus (100) comprising a first electromagnetic radiation source (104) adapted to emit electromagnetic radiation to an object of interest (107), a second electromagnetic radiation source (203) adapted to emit electromagnetic radiation to the object of interest (107), at least one detecting device (108) adapted to detect electromagnetic radiation generated by the first electromagnetic radiation source (104) and by the second electromagnetic radiation source (203) and scattered on the object of interest (107), and a determination unit (118) adapted to determine structural information concerning the object of interest (107) based on an analysis of detecting signals received from the at least one detecting device (108).
摘要翻译：一种用于检查感兴趣对象（107）的计算机断层摄影装置（100），所述计算机断层摄影装置（100）包括适于向感兴趣对象（107）发射电磁辐射的第一电磁辐射源（104），第二适于向感兴趣物体（107）发射电磁辐射的电磁辐射源（203），适于检测由第一电磁辐射源（104）产生的电磁辐射的第一电磁辐射源（203）并分散在感兴趣对象（107）上，以及确定单元（118），用于基于从至少一个检测设备接收的检测信号的分析来确定关于感兴趣对象（107）的结构信息（107） 108）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式