发明申请
US20120013337A1 SAR HOTSPOT REDUCTION BY TEMPORAL AVERAGING IN PARALLEL TRANSMISSION MRI
有权
通过平行传输中的时间平均来减少SAR值
- 专利标题： SAR HOTSPOT REDUCTION BY TEMPORAL AVERAGING IN PARALLEL TRANSMISSION MRI
- 专利标题（中）： 通过平行传输中的时间平均来减少SAR值
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申请号： US13258622申请日： 2010-03-31
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公开(公告)号： US20120013337A1公开(公告)日： 2012-01-19
- 发明人: Ingmar Graesslin , Ferdinand Schweser , Peter Boernert , Paul Royston Harvey
- 申请人： Ingmar Graesslin , Ferdinand Schweser , Peter Boernert , Paul Royston Harvey
- 申请人地址： NL EINDHOVEN
- 专利权人： KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人： KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人地址： NL EINDHOVEN
- 优先权： EP09157061.4 20090401
- 国际申请： PCT/IB10/51399 WO 20100331
- 主分类号： G01R33/44
- IPC分类号： G01R33/44
摘要：
A magnetic resonance sequence includes a repetitively applied radiofrequency B1 pulse capable of causing a specific absorption rate (SAR) hot spot. The composition of the repetitive B1 pulse is varied to generate versions of the repetitive B1 pulse such that the SAR hot spot changes locations with subsequent applications of the repetitive B1 pulse. To generate versions of the B1 pulse, a pilot scan is performed to generate a patient model. A simulation of the SAR response to each of the versions of the repetitive B1 pulse is performed to determine the location of SAR hot spot(s). A plurality of versions of the repetitive B1 pulse is selected to be used in the magnetic resonance sequence.
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