公开(公告)号：US07663368B2

公开(公告)日：2010-02-16

申请号：US12018333

申请日：2008-01-23

申请人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

发明人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

IPC分类号： G01V3/00

CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/5659

摘要： An arrangement for radiation of a radio-frequency field into an examination subject has a local coil unit with a housing. An insulating dielectric material is embodied at least at one part of the housing in order to passively compensate an inhomogeneity of the B1 field that occurs in the examination subject. An adjustment arrangement allows for fixed but detachable provision of the insulating dielectric material at the housing part.

摘要翻译： 用于将射频场辐射到检查对象中的布置具有带壳体的局部线圈单元。 绝缘介电材料至少体现在壳体的一部分上，以便被动地补偿在检查对象中发生的B1场的不均匀性。 调节装置允许绝缘电介质材料在壳体部分固定但可拆卸地设置。

公开(公告)号：US20080180102A1

公开(公告)日：2008-07-31

申请号：US12018333

申请日：2008-01-23

申请人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

发明人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

IPC分类号： G01R33/34

CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/5659

摘要： An arrangement for radiation of a radio-frequency field into an examination subject has a local coil unit with a housing. An insulating dielectric material is embodied at least at one part of the housing in order to passively compensate an inhomogeneity of the B1 field that occurs in the examination subject. An adjustment arrangement allows for fixed but detachable provision of the insulating dielectric material at the housing part.

摘要翻译： 用于将射频场辐射到检查对象中的布置具有带壳体的局部线圈单元。 绝缘介电材料至少体现在壳体的一部分上，以便被动地补偿在检查对象中发生的B1场的不均匀性。 调节装置允许绝缘电介质材料在壳体部分固定但可拆卸地设置。

公开(公告)号：US20090206836A1

公开(公告)日：2009-08-20

申请号：US11902584

申请日：2007-09-24

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： G01R33/20 ,  G01T1/166 ,  G01R33/44

CPC分类号： G01R33/28 ,  A61B5/0035 ,  A61B5/055 ,  G01R33/481 ,  G01T1/1603

摘要： A detection unit is disclosed for arrangement in the main magnet of an MR device, which has both an RF transceiver system and a PET detector. In at least one embodiment the RF transceiver system is divided into two parts and the two parts are arranged upstream and downstream of the PET detector in the longitudinal direction of the patient tunnel. The RF transceiver system and PET detector are applied to the same image volume. In at least one other embodiment, an MR device is equipped with the detection unit, and in at least one other embodiment, a method operates the detection unit.

摘要翻译： 公开了用于布置在MR设备的主磁体中的检测单元，其具有RF收发器系统和PET检测器。 在至少一个实施例中，RF收发器系统被分成两部分，并且两个部分被布置在患者隧道的纵向上的PET检测器的上游和下游。 RF收发器系统和PET检测器应用于相同的图像体积。 在至少另一个实施例中，MR装置配备有检测单元，并且在至少一个其它实施例中，一种方法操作检测单元。

公开(公告)号：US20100036237A1

公开(公告)日：2010-02-11

申请号：US12441974

申请日：2007-09-19

申请人： Eva Eberlein ,  Ludwig Eberler ,  Andreas Krug ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Axel Vom Endt

发明人： Eva Eberlein ,  Ludwig Eberler ,  Andreas Krug ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Axel Vom Endt

IPC分类号： A61B5/055

CPC分类号： G01R33/34046 ,  G01R33/28 ,  G01R33/34076 ,  G01R33/422 ,  G01R33/481

摘要： A detector unit for arrangement in a field generating unit of a magnetic resonance device has an RF transmission/reception system for transmitting RF pulses into, or receiving magnetic resonance signals from, an examination volume of the field generation unit. The RF transmission/reception system surrounds a patient tunnel at a radial distance from a tunnel axis thereof, and is divided into two sub-systems located at a distance from each other along the direction of the tunnel axis, so as to form a substantially annular cavity or interstice therebetween.

摘要翻译： 用于布置在磁共振装置的场产生单元中的检测器单元具有RF发射/接收系统，用于将RF脉冲发送到场发生单元的检查体中或从其接收磁共振信号。 RF发送/接收系统围绕患者隧道在距离其隧道轴线的径向距离处，并且被分成沿着隧道轴线的方向彼此间隔一定距离的两个子系统，以便形成大致环形 空腔或间隙。

公开(公告)号：US20080139924A1

公开(公告)日：2008-06-12

申请号：US11984479

申请日：2007-11-19

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： A61B5/055

CPC分类号： G01R33/28 ,  A61B5/0035 ,  A61B5/055 ,  A61B6/037 ,  G01R33/481 ,  G01T1/1603

摘要： A device for superposed magnetic resonance tomography and positron emission tomography imaging is disclosed. In at least one embodiment, the device includes a magnetic resonance tomography magnet, which defines a longitudinal axis; a magnetic resonance tomography gradient coil, arranged radially within the magnetic resonance tomography magnet; a magnetic resonance tomography RF coil, arranged radially within the magnetic resonance tomography gradient coil; and a multiplicity of positron emission tomography detection units, arranged in pairs lying opposite to one another about the longitudinal axis. In at least one embodiment, the many positron emission tomography detection units are arranged radially within the magnetic resonance tomography gradient coil and are arranged along the longitudinal axis next to the magnetic resonance tomography RF coil.

摘要翻译： 公开了用于叠加磁共振断层扫描和正电子发射断层摄影成像的装置。 在至少一个实施例中，该装置包括限定纵轴的磁共振断层摄影磁体; 磁共振断层摄影梯度线圈，位于磁共振断层摄影磁体内; 磁共振断层摄影RF线圈，径向设置在磁共振断层扫描梯度线圈内; 以及多个正电子发射断层摄影检测单元，成对地布置成围绕纵向轴线彼此相对。 在至少一个实施例中，许多正电子发射断层摄影检测单元径向布置在磁共振断层扫描梯度线圈内，并且沿着纵向轴线布置在磁共振断层摄影RF线圈旁边。

公开(公告)号：US20080068017A1

公开(公告)日：2008-03-20

申请号：US11882928

申请日：2007-08-07

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz

IPC分类号： G01R33/32

CPC分类号： G01T1/2985 ,  A61B6/037 ,  A61B6/4417 ,  G01R33/481 ,  G01T1/1603

摘要： Detection unit is disclosed for arrangement inside a cylindrical patient receptacle of a magnetic resonance apparatus. In at least one embodiment, the detection unit includes an annular PET detector arrangement with PET detector blocks, and a radiofrequency coil arrangement, arranged coaxially inside the PET detector arrangement and including longitudinal conductors, the longitudinal conductors being guided at least in sections along interspaces between mutually spaced apart detector blocks.

摘要翻译： 公开了用于布置在磁共振装置的圆柱形患者容器内的检测单元。 在至少一个实施例中，检测单元包括具有PET检测器块的环形PET检测器装置和同轴地布置在PET检测器装置内并包括纵向导体的射频线圈装置，纵向导体至少沿着 相互间隔开的检测器块。

公开(公告)号：US20060038566A1

公开(公告)日：2006-02-23

申请号：US11208185

申请日：2005-08-18

申请人： Ralph Kimmlingen ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

发明人： Ralph Kimmlingen ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/385 ,  G01R33/422

摘要： A magnetic resonance apparatus has an RF antenna unit, a gradient coil unit and an RF shield, the conductor structures of which are independent of one another. The RF shield is arranged between the RF antenna unit and the gradient coil unit, a first RF field return volume is arranged between RF the antenna unit (1, 29, 55A, and the gradient coil unit, the RF field return volume closes RF magnetic field lines of the RF antenna unit and is bordered by the RF shield on the side of the gradient coil unit. The conductor structure of the gradient coil unit occupies a first region. A second conductor-free region is within the first region, on the side facing the RF antenna unit, between a primary gradient coil unit and a secondary shim gradient coil unit of the gradient coil unit. The second conductor-free region is at least partially surrounded by the conductor structure of the gradient coil unit and is fashioned as a second RF field return volume in connection with the first RF field return volume. The RF shield proceeds between the RF field return volumes and the conductor structure of the gradient coil unit. The RF antenna unit is closer to the data acquisition region of the magnetic resonance apparatus than the gradient coil unit.

摘要翻译： 磁共振装置具有RF天线单元，梯度线圈单元和RF屏蔽，其导体结构彼此独立。 RF屏蔽设置在RF天线单元和梯度线圈单元之间，RF天线单元（1,29,55A和梯度线圈单元之间）之间布置第一RF场返回音量，RF场返回音量关闭RF RF天线单元的磁场线，并且由梯形线圈单元侧的RF屏蔽界定，梯度线圈单元的导体结构占据第一区域，第二无导体区域在第一区域内，在 面向RF天线单元的一侧，梯度线圈单元的主梯度线圈单元和次级斜面梯形线圈单元之间，第二无导体区域至少部分地被梯度线圈单元的导体结构包围，并被形成 作为与第一RF场返回体积相关的第二RF场返回体积，RF屏蔽在RF场返回体积和梯度线圈单元的导体结构之间进行，RF天线单元更靠近 e数据采集区域比梯形线圈单元。

公开(公告)号：US07002347B2

公开(公告)日：2006-02-21

申请号：US10953303

申请日：2004-09-29

申请人： Thorsten Feiweier ,  Razvan Lazar ,  Wolfgang Renz ,  Lothar Schön

发明人： Thorsten Feiweier ,  Razvan Lazar ,  Wolfgang Renz ,  Lothar Schön

IPC分类号： G01V3/00

CPC分类号： G01R33/341

摘要： A local coil unit for a magnetic resonance apparatus, which radiates a radio-frequency field into an examination subject, has a housing and at least a part of the housing is formed of an insulating dielectric material that passively compensates for an inhomogeneity in the high-frequency field in the subject. The material has a relative dielectric value εr of greater than 50, preferably greater than 100, and a dielectric loss factor tan δ of less than 2.5×10−2, preferably less than 1×10−3. In the dielectric material displacement currents are generated which create an additional magnetic field that compensates for the minima in the B1 field as a result of the eddy currents arising in the patient due to the radio-frequency radiation.

摘要翻译： 用于将射频场辐射到检查对象中的磁共振设备的局部线圈单元具有壳体，并且壳体的至少一部分由绝缘电介质材料形成，被动地补偿高频场中的不均匀性， 频率场。 该材料具有大于50，优选大于100的相对电介质值εL r以及低于2.5×10 -2的介电损耗因子tanδ，优​​选地较小 超过1×10 -3 -3。 在电介质材料中，产生位移电流，其产生额外的磁场，其由于射频辐射而在患者体内产生的涡流的结果来补偿B1场中的最小值。

公开(公告)号：US08131340B2

公开(公告)日：2012-03-06

申请号：US12441974

申请日：2007-09-19

申请人： Eva Eberlein ,  Ludwig Eberler ,  Andreas Krug ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Axel vom Endt

发明人： Eva Eberlein ,  Ludwig Eberler ,  Andreas Krug ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Axel vom Endt

IPC分类号： A61B5/05

CPC分类号： G01R33/34046 ,  G01R33/28 ,  G01R33/34076 ,  G01R33/422 ,  G01R33/481

摘要： A detector unit for arrangement in a field generating unit of a magnetic resonance device has an RF transmission/reception system for transmitting RF pulses into, or receiving magnetic resonance signals from, an examination volume of the field generation unit. The RF transmission/reception system surrounds a patient tunnel at a radial distance from a tunnel axis thereof, and is divided into two sub-systems located at a distance from each other along the direction of the tunnel axis, so as to form a substantially annular cavity or interstice therebetween.

摘要翻译： 用于布置在磁共振装置的场产生单元中的检测器单元具有RF发射/接收系统，用于将RF脉冲发送到场发生单元的检查体中或从其接收磁共振信号。 RF发送/接收系统围绕患者隧道在距离其隧道轴线的径向距离处，并且被分成沿着隧道轴线的方向彼此间隔一定距离的两个子系统，以便形成大致环形 空腔或间隙。

公开(公告)号：US07230427B2

公开(公告)日：2007-06-12

申请号：US11208185

申请日：2005-08-18

申请人： Ralph Kimmlingen ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

发明人： Ralph Kimmlingen ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/385 ,  G01R33/422

摘要： A magnetic resonance apparatus has an RF antenna unit, a gradient coil unit and an RF shield, the conductor structures of which are independent of one another. The RF shield is arranged between the RF antenna unit and the gradient coil unit, a first RF field return volume is arranged between RF the antenna unit (1, 29, 55A, and the gradient coil unit, the RF field return volume closes RF magnetic field lines of the RF antenna unit and is bordered by the RF shield on the side of the gradient coil unit. The conductor structure of the gradient coil unit occupies a first region. A second conductor-free region is within the first region, on the side facing the RF antenna unit, between a primary gradient coil unit and a secondary shim gradient coil unit of the gradient coil unit. The second conductor-free region is at least partially surrounded by the conductor structure of the gradient coil unit and is fashioned as a second RF field return volume in connection with the first RF field return volume. The RF shield proceeds between the RF field return volumes and the conductor structure of the gradient coil unit. The RF antenna unit is closer to the data acquisition region of the magnetic resonance apparatus than the gradient coil unit.

摘要翻译： 磁共振装置具有RF天线单元，梯度线圈单元和RF屏蔽，其导体结构彼此独立。 RF屏蔽设置在RF天线单元和梯度线圈单元之间，RF天线单元（1,29,55A和梯度线圈单元之间）之间布置第一RF场返回音量，RF场返回音量关闭RF RF天线单元的磁场线，并且由梯形线圈单元侧的RF屏蔽界定，梯度线圈单元的导体结构占据第一区域，第二无导体区域在第一区域内，在 面向RF天线单元的一侧，梯度线圈单元的主梯度线圈单元和次级斜面梯形线圈单元之间，第二无导体区域至少部分地被梯度线圈单元的导体结构包围，并被形成 作为与第一RF场返回体积相关的第二RF场返回体积，RF屏蔽在RF场返回体积和梯度线圈单元的导体结构之间进行，RF天线单元更靠近 e数据采集区域比梯形线圈单元。