发明名称 |
PARALLEL TRANSMISSION RF PULSE DESIGN WITH LOCAL SAR CONSTRAINTS |
摘要 |
A method of designing a parallel transmission radio frequency (RF) pulse for a magnetic resonance imaging (MRI) system includes compressing a model for a subject to be scanned by the MRI system into a plurality of voxel clusters, each voxel cluster defining a virtual observation point with a peak sensitivity to local specific absorption rate (SAR) for the voxel cluster, and defining the parallel transmission RF pulse based on an approximation of a minimization criterion having a local SAR component based on the peak sensitivity of each virtual observation point, the approximation comprising a weighted sum of the local SAR values for each virtual observation point.
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申请公布号 |
US2012256626(A1) |
申请公布日期 |
2012.10.11 |
申请号 |
US201113083342 |
申请日期 |
2011.04.08 |
申请人 |
ADALSTEINSSON ELFAR;LEE JOONSUNG;WALD LAWRENCE L.;GEBHARDT MATTHIAS L.;SIEMENS AKTIENGESELLSCHAFT |
发明人 |
ADALSTEINSSON ELFAR;LEE JOONSUNG;WALD LAWRENCE L.;GEBHARDT MATTHIAS L. |
分类号 |
G01R33/48;G01R33/44 |
主分类号 |
G01R33/48 |
代理机构 |
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代理人 |
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地址 |
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