公开(公告)号：US20100225320A1

公开(公告)日：2010-09-09

申请号：US12718271

申请日：2010-03-05

申请人： Razvan Lazar ,  Juergen Nistler

发明人： Razvan Lazar ,  Juergen Nistler

IPC分类号： G01R33/32

CPC分类号： G01R33/3628 ,  G01R33/3415 ,  G01R33/3456

摘要： The efficiency and the field structure of an antenna arrangement for a magnetic resonance tomography apparatus are improved by at least one impedance transformation circuit connected with the antenna.

摘要翻译： 用于磁共振断层摄影装置的天线装置的效率和场结构由与天线连接的至少一个阻抗变换电路改进。

公开(公告)号：US07492156B2

公开(公告)日：2009-02-17

申请号：US11095159

申请日：2005-03-31

申请人： Yvonne Candidus ,  Thorsten Feiweier ,  Wilhelm Horger ,  Jürgen Huber ,  Razvan Lazar ,  Melanie Schmitt ,  Lothar Schön

发明人： Yvonne Candidus ,  Thorsten Feiweier ,  Wilhelm Horger ,  Jürgen Huber ,  Razvan Lazar ,  Melanie Schmitt ,  Lothar Schön

IPC分类号： G01V3/00 ,  A61B5/00

CPC分类号： G01R33/28 ,  G01R33/34 ,  G01R33/5659 ,  Y10T29/49

摘要： A dielectric element is formed of a dielectric material exhibiting a magnetic resonance relaxation time, with a relaxation agent incorporated in the dielectric material that reduces the relaxation time of the dielectric material. The dielectric element is adapted for placement on a subject while magnetic resonance data are acquired from the subject, and locally influences the B1 field distribution in the subject during the acquisition of magnetic resonance data.

公开(公告)号：US20050231203A1

公开(公告)日：2005-10-20

申请号：US11084421

申请日：2005-03-18

申请人： Thorsten Feiweier ,  Razvan Lazar

发明人： Thorsten Feiweier ,  Razvan Lazar

IPC分类号： G01R33/32 ,  G01R33/34 ,  G01R33/3415 ,  G01V3/00

CPC分类号： G01R33/5659 ,  G01R33/246 ,  G01R33/3415

摘要： In a method and magnetic resonance system for homogenization of the B1 field for a magnetic resonance data acquisition with a number of iteration steps. An iteration step includes the following sub-steps: Measurement data are acquired that represent a B1 field distribution in at least one part of the examination volume of the magnetic resonance system. A B1 homogeneity analysis based on the acquired measurement data is automatically implemented. A specific homogenization action is automatically selected from among a number of possible homogenization actions based on the B1 homogeneity analysis, or the iterative homogenization method is ended if the diagnosed homogeneity is sufficient for an intended magnetic resonance measurement. The selected homogenization action is implemented.

摘要翻译： 在用于使多个迭代步骤进行磁共振数据采集的B SUB场的均匀化的方法和磁共振系统中。 迭代步骤包括以下子步骤：在磁共振系统的检查体积的至少一部分中获取表示B 1 SUB场分布的测量数据。 基于所获取的测量数据的B 1同质性分析被自动实现。 基于B 1均质性分析，可以从许多可能的均匀化动作中自动选择特定的均质化作用，或者如果诊断的均匀性对于预期的磁共振测量是足够的，则迭代均匀化方法结束。 实施所选择的均质化动作。