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1. 发明授权

US08432166B2 Balanced steady-state free-precession transient imaging using variable flip angles for a predefined signal profile 有权
标题翻译：平衡稳态自由进动瞬态成像使用可变翻转角度预定义的信号轮廓
公开(公告)号：US08432166B2
公开(公告)日：2013-04-30
申请号：US12660676
申请日：2010-03-01
申请人： Pauline W. Worters , Brian A. Hargreaves
发明人： Pauline W. Worters , Brian A. Hargreaves
IPC分类号： G01V3/00
CPC分类号： G01R33/5614 , G01R33/5635
摘要： A magnetic resonance imaging system or method is provided including a balanced steady-state free-precession transient imaging (transient bSSFP) device capable of increasing the overall signal during transient bSSFP acquisition by fully or better utilization of the magnetization through variable RF flip angles. The transient bSSFP device is capable of generating a series of echoes with a desired transverse magnetization profile MT. It is further capable of generating RF pulses each having a distinct RF flip angle for each of the echoes in the series of echoes. The transient bSSFP device is coupled to a computer capable of calculating the distinct RF flip angle for the nth echo in the series of echoes. The computer calculation utilizes a program encoding an analytical inversion of the Bloch equation. Once the RF flip angle is calculated, it is used by the transient bSSFP device in the generation of the nth echo.
摘要翻译：提供了一种磁共振成像系统或方法，其包括平衡的稳态自由进动瞬态成像（瞬态bSSFP）装置，其能够通过可变RF翻转角完全或更好地利用磁化来增加瞬态bSSFP捕获期间的总体信号。瞬态bSSFP器件能够产生具有期望的横向磁化分布MT的一系列回波。它还能够产生RF脉冲，每个RF脉冲具有针对一系列回波中的每个回波的不同的RF翻转角。瞬态bSSFP器件耦合到能够计算该系列回波中第n个回波的不同RF翻转角的计算机。计算机计算利用编码Bloch方程的分析反演的程序。一旦计算了RF翻转角，则在产生第n个回波时，它被瞬态bSSFP器件使用。

2. 发明申请

US20110210732A1 Balanced steady-state free-precession transient imaging using variable flip angles for a predefined signal profile 有权
标题翻译：平衡稳态自由进动瞬态成像使用可变翻转角度预定义的信号轮廓
公开(公告)号：US20110210732A1
公开(公告)日：2011-09-01
申请号：US12660676
申请日：2010-03-01
申请人： Pauline W. Worters , Brian A. Hargreaves
发明人： Pauline W. Worters , Brian A. Hargreaves
IPC分类号： G01R33/48
CPC分类号： G01R33/5614 , G01R33/5635
摘要： A magnetic resonance imaging system or method is provided including a balanced steady-state free-precession transient imaging (transient bSSFP) device capable of increasing the overall signal during transient bSSFP acquisition by fully or better utilization of the magnetization through variable RF flip angles. The transient bSSFP device is capable of generating a series of echoes with a desired transverse magnetization profile MT. It is further capable of generating RF pulses each having a distinct RF flip angle for each of the echoes in the series of echoes. The transient bSSFP device is coupled to a computer capable of calculating the distinct RF flip angle for the nth echo in the series of echoes. The computer calculation utilizes a program encoding an analytical inversion of the Bloch equation. Once the RF flip angle is calculated, it is used by the transient bSSFP device in the generation of the nth echo.
摘要翻译：提供了一种磁共振成像系统或方法，其包括平衡稳态自由进动瞬态成像（瞬态bSSFP）装置，其能够通过可变RF翻转角完全或更好地利用磁化来增加瞬态bSSFP捕获期间的总体信号。瞬态bSSFP器件能够产生具有期望的横向磁化分布MT的一系列回波。它还能够产生RF脉冲，每个RF脉冲具有针对一系列回波中的每个回波的不同的RF翻转角。瞬态bSSFP器件耦合到能够计算该系列回波中第n个回波的不同RF翻转角的计算机。计算机计算利用编码Bloch方程的分析反演的程序。一旦计算了RF翻转角，则在产生第n个回波时，它被瞬态bSSFP器件使用。

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