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1.发明申请公开(公告)号：US20120280683A1
公开(公告)日：2012-11-08
申请号：US13101898
申请日：2011-05-05
IPC分类号： G01R33/44
CPC分类号： G01R33/5612 , G01R33/246
摘要： A system and method for radio-frequency (RF) field mapping are provided. One method includes encoding a B1 phase in at least one magnetic resonance (MR) excitation pulse as an encoded B1 phase MR excitation pulse for at least a subset of a plurality of transmit channels within a magnetic resonance imaging (MRI) system. The method also includes encoding a B1 magnitude in at least one off-resonance MR pulse as an encoded B1 magnitude off-resonance MR pulse for at least a subset of the plurality of transmit channels within the MRI system. The method further includes determining one or more composite B1 fields resulting from a transmission of the at least one encoded B1 phase MR excitation pulse and the at least one encoded B1 magnitude off-resonance MR pulse.
摘要翻译： 提供了射频（RF）场映射的系统和方法。 一种方法包括将至少一个磁共振（MR）激励脉冲中的B1相编码为磁共振成像（MRI）系统内的多个发射信道的至少一个子集的编码B1相位MR激励脉冲。 该方法还包括将至少一个非共振MR MR脉冲中的B1幅度编码为MRI系统内的多个发射信道的至少一个子集的经编码的B1幅度非共振MR脉冲。 该方法还包括确定由至少一个编码的B1相MR激励脉冲和至少一个编码的B1幅度非共振MR脉冲的传输产生的一个或多个复合B1场。
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公开(公告)号：US08558547B2
公开(公告)日：2013-10-15
申请号：US13101898
申请日：2011-05-05
IPC分类号： G01V3/00
CPC分类号： G01R33/5612 , G01R33/246
摘要： A system and method for radio-frequency (RF) field mapping are provided. One method includes encoding a B1 phase in at least one magnetic resonance (MR) excitation pulse as an encoded B1 phase MR excitation pulse for at least a subset of a plurality of transmit channels within a magnetic resonance imaging (MRI) system. The method also includes encoding a B1 magnitude in at least one off-resonance MR pulse as an encoded B1 magnitude off-resonance MR pulse for at least a subset of the plurality of transmit channels within the MRI system. The method further includes determining one or more composite B1 fields resulting from a transmission of the at least one encoded B1 phase MR excitation pulse and the at least one encoded B1 magnitude off-resonance MR pulse.
摘要翻译： 提供了射频（RF）场映射的系统和方法。 一种方法包括将至少一个磁共振（MR）激励脉冲中的B1相编码为磁共振成像（MRI）系统内的多个发射信道的至少一个子集的编码B1相位MR激励脉冲。 该方法还包括将至少一个非共振MR MR脉冲中的B1幅度编码为MRI系统内的多个发射信道的至少一个子集的经编码的B1幅度非共振MR脉冲。 该方法还包括确定由至少一个编码的B1相MR激励脉冲和至少一个编码的B1幅度非共振MR脉冲的传输产生的一个或多个复合B1场。
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公开(公告)号：US09086446B2
公开(公告)日：2015-07-21
申请号：US13306577
申请日：2011-11-29
IPC分类号： G01R33/24 , G01R33/48 , G01R33/483
CPC分类号： G01R33/246 , G01R33/4824 , G01R33/4831
摘要： A method of B1 field mapping relating to Magnetic resonance imaging (MRI) is given. In the method, RF and gradients are applied to excite and select a linear projection through a volume of interest; a radio frequency pulse sequence is transmitted to impart B1 dependent phase to the linear projection, following which a one dimensional spatial encoding signal is acquired along the linear projection; Subsequently a B1 field map based on the one dimensional spatial encoding signal is reconstructed.
摘要翻译： 给出了与磁共振成像（MRI）相关的B1场映射的方法。 在该方法中，应用RF和梯度来激发并选择通过感兴趣的体积的线性投影; 发送射频脉冲序列以将B1相关相位提供给线性投影，随后沿着线性投影获取一维空间编码信号; 随后重建基于一维空间编码信号的B1场地图。
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公开(公告)号：US20130134972A1
公开(公告)日：2013-05-30
申请号：US13306577
申请日：2011-11-29
CPC分类号： G01R33/246 , G01R33/4824 , G01R33/4831
摘要： A method of B1 field mapping relating to Magnetic resonance imaging (MRI) is given. In the method, RF and gradients are applied to excite and select a linear projection through a volume of interest; a radio frequency pulse sequence is transmitted to impart B1 dependent phase to the linear projection, following which a one dimensional spatial encoding signal is acquired along the linear projection; Subsequently a B1 field map based on the one dimensional spatial encoding signal is reconstructed.
摘要翻译： 给出了与磁共振成像（MRI）相关的B1场映射的方法。 在该方法中，应用RF和梯度来激发并选择通过感兴趣的体积的线性投影; 发送射频脉冲序列以将B1相关相位提供给线性投影，随后沿着线性投影获取一维空间编码信号; 随后重建基于一维空间编码信号的B1场地图。
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