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

US07062006B1 Computed tomography with increased field of view 有权
标题翻译：计算机断层扫描具有增加的视野
公开(公告)号：US07062006B1
公开(公告)日：2006-06-13
申请号：US11039716
申请日：2005-01-19
申请人： Norbert J. Pelc , Rebecca Fahrig , Edward G. Solomon
发明人： Norbert J. Pelc , Rebecca Fahrig , Edward G. Solomon
IPC分类号： G01N23/00
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4014 , G01N2223/419 , G01T1/2985
摘要： A volumetric computed tomography system with a large field of view has, in a forward geometry implementation, multiple x-ray point sources emitting corresponding fan beams at a single detector array. The central ray of at least one of the fan beams is radially offset from the axis of rotation of the system by an offset distance D. Consequently, the diameter of the in-plane field of view provided by the fan beams may be larger than in a conventional CT scanner. Any number of point sources may be used. Analogous systems may be implemented with an inverse geometry so that a single source array emits multiple fan beams that converge upon corresponding detectors.
摘要翻译：具有大视场的体积计算机断层摄影系统在前向几何实现中具有在单个检测器阵列处发射相应风扇光束的多个x射线点源。至少一个风扇光束的中心射线从系统的旋转轴线径向偏移偏移距离D.因此，由扇形光束提供的面内视野的直径可能大于常规CT扫描仪。可以使用任何数量的点源。类似系统可以用逆几何形状实现，使得单个源阵列发射多个扇形波束，其收敛在相应的检测器上。

2. 发明授权

US06975895B1 Modified X-ray tube for use in the presence of magnetic fields 有权
标题翻译：用于存在磁场的改进的X射线管
公开(公告)号：US06975895B1
公开(公告)日：2005-12-13
申请号：US09823889
申请日：2001-03-30
申请人： Norbert J. Pelc , Rebecca Fahrig , Marcus T. Alley , Zhifei Wen
发明人： Norbert J. Pelc , Rebecca Fahrig , Marcus T. Alley , Zhifei Wen
IPC分类号： H01J35/14 , H01J35/16 , H05C1/02 , H01J35/30 , A61B5/05
CPC分类号： H05C1/02 , G01R33/4812 , H01J35/14 , H01J35/16
摘要： An imaging system and method combines a magnetic resonance imaging (MRI) system and an x-ray fluoroscopy system such that the two systems have coincident fields of view. X-rays are generated by a stationary anode x-ray tube in which an electron beam is accelerated from a cathode to an anode. In the presence of the static magnetic field of the MRI system, the electron beam is deflected unless it is parallel to the static magnetic field. The x-ray source of the invention contains elements used to steer the electron beam and increase its focusing on the anode. The beam can be steered electrostatically, electromagnetically, or by adding magnetic material to the x-ray source. In the resulting system, MR and x-ray images are acquired without moving the object, which is particularly useful for image-guided medical intervention procedures.
摘要翻译：成像系统和方法结合磁共振成像（MRI）系统和x射线透视系统，使得两个系统具有重合的视场。 X射线由固定的阳极x射线管产生，其中电子束从阴极加速到阳极。在MRI系统的静磁场的存在下，电子束被偏转，除非它与静磁场平行。本发明的X射线源包含用于引导电子束并增加其在阳极上聚焦的元件。光束可以静电，电磁学或通过向x射线源添加磁性材料。在所得到的系统中，获取MR和X射线图像而不移动物体，这对于图像引导的医疗干预程序特别有用。

3. 发明授权

US08331531B2 Configurations for integrated MRI-linear accelerators 有权
标题翻译：集成MRI线性加速器的配置
公开(公告)号：US08331531B2
公开(公告)日：2012-12-11
申请号：US12661303
申请日：2010-03-15
申请人： Rebecca Fahrig , Norbert J. Pelc , Kim Pauly , Greig C. Scott , Amit Sawant , Paul J. Keall , Lei Xing , Steven M. Conolly
发明人： Rebecca Fahrig , Norbert J. Pelc , Kim Pauly , Greig C. Scott , Amit Sawant , Paul J. Keall , Lei Xing , Steven M. Conolly
IPC分类号： A61N5/10 , G01N23/04
CPC分类号： G01R33/4808 , A61N5/1049 , A61N5/1067 , A61N2005/1055 , A61N2005/1061 , A61N2005/1087
摘要： The present invention provides a radiotherapy treatment apparatus that includes a treatment beam, a magnetic field disposed parallel collinear to the treatment beam, and a target that is disposed along the treatment beam. The treatment beam can be a charged particle beam, a proton beam, an electron beam, or a linear accelerator (Linac) beam. The magnetic field is from a magnetic resonance imager (MRI), a megavolt x-ray imager, or a kilovolt x-ray imager and is disposed to operate in coordination with operation of the treatment beam and to narrow the beam. The tumor is disposed to rotate with respect to the treatment beam and the magnetic field, or the treatment beam and the magnetic field are disposed to rotate up to 360° with respect to the target when mounted to a ring gantry. The apparatus can include a rotation angle dependent shim disposed to account for Earth's magnetic field.
摘要翻译：本发明提供了一种放射治疗处理装置，其包括处理束，与处理束并行设置的磁场和沿着治疗束设置的靶。处理光束可以是带电粒子束，质子束，电子束或线性加速器（线性加速器）。磁场来自磁共振成像仪（MRI），兆伏X射线成像仪或千伏X射线成像仪，并且被设置为与治疗束的操作协调操作并且使束变窄。肿瘤设置成相对于治疗束和磁场旋转，或者治疗束和磁场被设置为当安装到环形台架时相对于靶旋转高达360度。该装置可以包括设置成考虑地球磁场的旋转角度相关垫片。

4. 发明授权

US06812700B2 Correction of local field inhomogeneity in magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置中局部场不均匀性的校正
公开(公告)号：US06812700B2
公开(公告)日：2004-11-02
申请号：US10213149
申请日：2002-08-05
申请人： Rebecca Fahrig , Norbert J. Pelc , Steven Conolly
发明人： Rebecca Fahrig , Norbert J. Pelc , Steven Conolly
IPC分类号： G01V300
CPC分类号： G01R33/3875 , G01R33/28
摘要： Perturbations in a static magnetic field of magnetic resonance imaging apparatus are compensated by creating magnetic fields near an object creating the perturbations with the magnetic fields adjusted to offset the perturbations in the static magnetic field. In an embodiment where the perturbations are caused by an x-ray detector in a combined modality imaging apparatus, the coils are positioned to surround the x-ray detector and create magnetic fields in the static magnetic field outside of the detector which compensate for the perturbations caused by the x-ray detector.
摘要翻译：在磁共振成像装置的静磁场中的扰动通过在物体附近产生磁场来补偿，产生扰动，其中磁场被调整以抵消静磁场中的扰动。在其中扰动由组合的模态成像设备中的X射线检测器引起的实施例中，线圈被定位成围绕x射线检测器并在检测器外部的静态磁场中产生磁场，该磁场补偿扰动由X射线探测器引起。

5. 发明申请

US20100239066A1 Configurations for integrated MRI-linear accelerators 有权
标题翻译：集成MRI线性加速器的配置
公开(公告)号：US20100239066A1
公开(公告)日：2010-09-23
申请号：US12661303
申请日：2010-03-15
申请人： Rebecca Fahrig , Norbert J. Pelc , Kim Pauly , Greig C. Scott , Amit Sawant , Paul J. Keall , Lei Xing , Steven M. Conolly
发明人： Rebecca Fahrig , Norbert J. Pelc , Kim Pauly , Greig C. Scott , Amit Sawant , Paul J. Keall , Lei Xing , Steven M. Conolly
IPC分类号： A61N5/10 , A61N5/00 , G01R33/44
CPC分类号： G01R33/4808 , A61N5/1049 , A61N5/1067 , A61N2005/1055 , A61N2005/1061 , A61N2005/1087
摘要： The present invention provides a radiotherapy treatment apparatus that includes a treatment beam, a magnetic field disposed parallel collinear to the treatment beam, and a target that is disposed along the treatment beam. The treatment beam can be a charged particle beam, a proton beam, an electron beam, or a linear accelerator (Linac) beam. The magnetic field is from a magnetic resonance imager (MRI), a megavolt x-ray imager, or a kilovolt x-ray imager and is disposed to operate in coordination with operation of the treatment beam and to narrow the beam. The tumor is disposed to rotate with respect to the treatment beam and the magnetic field, or the treatment beam and the magnetic field are disposed to rotate up to 360° with respect to the target when mounted to a ring gantry. The apparatus can include a rotation angle dependent shim disposed to account for Earth's magnetic field.
摘要翻译：本发明提供了一种放射治疗处理装置，其包括处理束，与处理束并行设置的磁场和沿着治疗束设置的靶。处理光束可以是带电粒子束，质子束，电子束或线性加速器（线性加速器）。磁场来自磁共振成像仪（MRI），兆伏X射线成像仪或千伏x射线成像仪，并且被设置成与治疗束的操作协调操作并且使束变窄。肿瘤设置成相对于治疗束和磁场旋转，或者治疗束和磁场被设置为当安装到环形台架时相对于靶旋转高达360度。该装置可以包括设置成考虑地球磁场的旋转角度相关垫片。

6. 发明授权

US07701215B2 MR compatible rotating anode x-ray tube 有权
标题翻译： MR兼容旋转阳极x射线管
公开(公告)号：US07701215B2
公开(公告)日：2010-04-20
申请号：US12038237
申请日：2008-02-27
申请人： Prasheel Lillaney , Rebecca Fahrig , Arundhuti Ganguly , Norbert J. Pelc
发明人： Prasheel Lillaney , Rebecca Fahrig , Arundhuti Ganguly , Norbert J. Pelc
IPC分类号： G01V3/00
CPC分类号： G01R33/381 , G01R33/4812
摘要： An apparatus for use in a magnetic resonance (MR) system, which generates an external MR magnetic field, is provided. A rotor comprises a rotor shaft with an axis along a length of the rotor shaft and a plurality of coils on the rotor shaft. A housing supports and surrounds the rotor, where a part of the housing surrounds sides of the rotor and where the part of the housing surrounding sides of the rotor is magnet free. A mount allows for the mounting of the housing to the MR system in a location where the MR system provides a magnetic field, wherein a component of the MR magnetic field that is perpendicular to the axis of the rotor shaft is at least 100 Gauss. An active timer applies a voltage to the plurality of coils with alternating polarity. Contacts provide an electrical connection between the active timer and the plurality of coils.
摘要翻译：提供一种用于产生外部MR磁场的磁共振（MR）系统中的装置。转子包括具有沿着转子轴的长度的轴线和转子轴上的多个线圈的转子轴。壳体支撑并围绕转子，其中壳体的一部分围绕转子的侧面并且转子的外壳周围的部分是无磁体的。安装件允许在MR系统提供磁场的位置处将壳体安装到MR系统，其中垂直于转子轴的轴线的MR磁场的分量为至少100高斯。有源定时器对具有交替极性的多个线圈施加电压。接触件提供有源定时器和多个线圈之间的电连接。

7. 发明申请

US20090212775A1 MR COMPATIBLE ROTATING ANODE X-RAY TUBE 有权
标题翻译： MR兼容旋转阳极X射线管
公开(公告)号：US20090212775A1
公开(公告)日：2009-08-27
申请号：US12038237
申请日：2008-02-27
申请人： Prasheel Lillaney , Rebecca Fahrig , Arundhuti Ganguly , Norbert J. Pelc
发明人： Prasheel Lillaney , Rebecca Fahrig , Arundhuti Ganguly , Norbert J. Pelc
IPC分类号： G01R33/38
CPC分类号： G01R33/381 , G01R33/4812
摘要： An apparatus for use in a magnetic resonance (MR) system, which generates an external MR magnetic field, is provided. A rotor comprises a rotor shaft with an axis along a length of the rotor shaft and a plurality of coils on the rotor shaft. A housing supports and surrounds the rotor, where a part of the housing surrounds sides of the rotor and where the part of the housing surrounding sides of the rotor is magnet free. A mount allows for the mounting of the housing to the MR system in a location where the MR system provides a magnetic field, wherein a component of the MR magnetic field that is perpendicular to the axis of the rotor shaft is at least 100 Gauss. An active timer applies a voltage to the plurality of coils with alternating polarity. Contacts provide an electrical connection between the active timer and the plurality of coils.
摘要翻译：提供一种用于产生外部MR磁场的磁共振（MR）系统中的装置。转子包括具有沿着转子轴的长度的轴线和转子轴上的多个线圈的转子轴。壳体支撑并围绕转子，其中壳体的一部分围绕转子的侧面并且转子的外壳周围的部分是无磁体的。安装件允许在MR系统提供磁场的位置处将壳体安装到MR系统，其中垂直于转子轴的轴线的MR磁场的分量为至少100高斯。有源定时器对具有交替极性的多个线圈施加电压。接触件提供有源定时器和多个线圈之间的电连接。

8. 发明授权

US08194820B2 Optimal weights for measuring spectral x-ray data 有权
标题翻译：用于测量光谱X射线数据的最佳权重
公开(公告)号：US08194820B2
公开(公告)日：2012-06-05
申请号：US12700558
申请日：2010-02-04
申请人： Adam S. Wang , Norbert J. Pelc
发明人： Adam S. Wang , Norbert J. Pelc
IPC分类号： G01N23/06 , H05G1/64
CPC分类号： G01N23/087
摘要： A method for determining a composition of an object using a spectral x-ray system is provided. X-ray photons of at least two different energies are transmitted through the object. The energy of each detected x-ray photon using a detector in the x-ray system is estimated. A first weighted sum of the number of detected photons of each energy is found using a first weighting function, wherein the first weighting function is dependent on the attenuation coefficient function of a first material. In another embodiment, the photons are binned into two energy bins wherein there is a gap between the energy bins.
摘要翻译：提供了一种使用光谱X射线系统确定物体的组成的方法。至少两种不同能量的X射线光子通过物体传输。使用X射线系统中的检测器估计每个检测到的x射线光子的能量。使用第一加权函数找到每个能量的检测光子数量的第一加权和，其中第一加权函数取决于第一材料的衰减系数函数。在另一个实施例中，光子被分成两个能量箱，其中在能量箱之间存在间隙。

9. 发明授权

US07860210B2 Data normalization in inverse geometry computed tomography system 有权
标题翻译：逆几何计算机断层扫描系统的数据归一化
公开(公告)号：US07860210B2
公开(公告)日：2010-12-28
申请号：US12273223
申请日：2008-11-18
申请人： Norbert J. Pelc , Jongduk Baek
发明人： Norbert J. Pelc , Jongduk Baek
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/583
摘要： A method for imaging an object in a computed tomography (CT) system with a plurality of sources comprising a first source and a second source, wherein the plurality of sources together with a detector array are mounted on a rotatable gantry, and wherein an intensity of the second source has unknown fluctuations is provided. Projection data is collected using the first source in a first gantry position. Projection data is collected using the second source in a second gantry position, wherein projection data from the first source in the first gantry position substantially overlaps projection data from the second source in the second gantry position. Data from the first source at the first gantry position is used to correct for source fluctuations of the second source at the second gantry position.
摘要翻译：一种用于在具有多个源的计算机断层摄影（CT）系统中对物体进行成像的方法，所述多个源包括第一源和第二源，其中所述多个源与检测器阵列一起安装在可旋转机架上，并且其中强度第二个来源提供了未知的波动。在第一台架位置使用第一源收集投影数据。在第二台架位置使用第二源收集投影数据，其中来自第一台架位置的第一源的投影数据在第二台架位置中基本上与来自第二源的投影数据重叠。来自第一台架位置处的第一源的数据用于校正第二机架位置处的第二源的源波动。

10. 发明授权

US07486073B2 Sliding window reconstruction and phase/field map updating for dynamic chemical shift imaging 有权
标题翻译：动态化学位移成像的滑动窗口重建和相位/场地图更新
公开(公告)号：US07486073B2
公开(公告)日：2009-02-03
申请号：US11738347
申请日：2007-04-20
申请人： Huanzhou Yu , Charles A. McKenzie , Jean H. Brittain , Norbert J. Pelc , Scott B. Reeder
发明人： Huanzhou Yu , Charles A. McKenzie , Jean H. Brittain , Norbert J. Pelc , Scott B. Reeder
IPC分类号： G01V3/00
CPC分类号： G01R33/5617 , G01R33/4828
摘要： A method for generating dynamic magnetic resonance images is provided. A cyclical magnetic resonance imaging excitation is applied for a plurality of cycles at a cycle rate. A plurality of magnetic resonance image echoes is acquired for each cycle. A plurality of frames of images is generated from the acquired plurality of magnetic resonance echoes at a frame rate that is at least twice the cycle rate, wherein each frame of the plurality of frames is generated from a plurality of echoes and wherein some of the plurality of frames are generated from magnetic resonance image echoes of adjacent cycles.
摘要翻译：提供了一种用于产生动态磁共振图像的方法。周期磁共振成像激励以循环速率施加多个周期。对于每个周期获取多个磁共振图像回波。从所获取的多个磁共振回波以至少为循环速率的两倍的帧速率产生多个图像帧，其中，多个帧中的每个帧由多个回波生成，并且其中多个帧中的一些的帧由相邻周期的磁共振图像回波产生。

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