发明申请
US20050189940A1 Magnetic resonance system and operating method for RF pulse optimization
有权
用于RF脉冲优化的磁共振系统和操作方法
- 专利标题: Magnetic resonance system and operating method for RF pulse optimization
- 专利标题(中): 用于RF脉冲优化的磁共振系统和操作方法
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申请号: US11036727申请日: 2005-01-14
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公开(公告)号: US20050189940A1公开(公告)日: 2005-09-01
- 发明人: Thorsten Feiweier , Ralf Ladebeck , Ralph Oppelt , Wolfgang Renz , Markus Vester
- 申请人: Thorsten Feiweier , Ralf Ladebeck , Ralph Oppelt , Wolfgang Renz , Markus Vester
- 优先权: DE102004002009.4 20040114
- 主分类号: A61B5/055
- IPC分类号: A61B5/055 ; G01R33/34 ; G01R33/3415 ; G01R33/36 ; G01V3/00
摘要:
In a magnetic resonance system and an operating method therefor, a B1 field distribution of a radio-frequency antenna is measured in at least one part of a examination volume of the magnetic resonance system, and then the RF pulses emitted by the radio-frequency antenna are optimized, based on the determined B1 field distribution, for homogenization in a specific volume. An effective volume within the examination volume is determined beforehand for each applied RF pulse and, based on the determined B1 field distribution, the appertaining RF pulse is individually adjusted such that the B1 field is homogenized within the effective volume of the RF pulse.