公开(公告)号：US08600475B2

公开(公告)日：2013-12-03

申请号：US13080281

申请日：2011-04-05

申请人： Shaokuan Zheng ,  Mitchell Albert

发明人： Shaokuan Zheng ,  Mitchell Albert

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  A61B5/0402 ,  A61B5/7292 ,  G01R33/565 ,  G01R33/5673 ,  G01R33/5676

摘要： A system and method for recording magnetic resonance images with reduced relaxation-related artifacts. The system and method improve the conventional methods for acquiring magnetic resonance images of in vivo tissue by augmenting the procedures for eliminating artifacts caused by motion with procedures for eliminating artifacts caused by spin of the magnetic resonance-active nuclei in the specimen of interest. One procedure to eliminate such spin inhomogeneities is to require a delay defined by the time N*T1, where N is a numerical value greater than or equal to 5 and T1 is the characteristic time constant for decay of spins back to the equilibrium longitudinal state. Another procedure uses a value of N less than 5.

摘要翻译： 用于记录具有降低的放松相关伪影的磁共振图像的系统和方法。 该系统和方法通过增加用于消除由感兴趣的标本中的磁共振活性核的旋转引起的伪像的程序来消除由运动引起的伪像的过程，从而改进了用于获取体内组织的磁共振图像的常规方法。 消除这种自旋不均匀性的一个过程是要求由时间N * T1定义的延迟，其中N是大于或等于5的数值，并且T1是自旋回到平衡纵向状态的衰减的特征时间常数。 另一个程序使用N小于5的值。

公开(公告)号：US20140051979A1

公开(公告)日：2014-02-20

申请号：US14066855

申请日：2013-10-30

申请人： Shaokuan Zheng ,  Mitchell Albert

发明人： Shaokuan Zheng ,  Mitchell Albert

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  A61B5/0402 ,  A61B5/7292 ,  G01R33/565 ,  G01R33/5673 ,  G01R33/5676

摘要： A system and method for recording magnetic resonance images with reduced relaxation-related artifacts. The system and method improve the conventional methods for acquiring magnetic resonance images of in vivo tissue by augmenting the procedures for eliminating artifacts caused by motion with procedures for eliminating artifacts caused by spin of the magnetic resonance-active nuclei in the specimen of interest. One procedure to eliminate such spin inhomogeneities is to require a delay defined by the time N*T1, where N is a numerical value greater than or equal to 5 and T1 is the characteristic time constant for decay of spins back to the equilibrium longitudinal state. Another procedure uses a value of N less than 5.

摘要翻译： 用于记录具有降低的放松相关伪影的磁共振图像的系统和方法。 该系统和方法通过增加用于消除由感兴趣的标本中的磁共振活性核的旋转引起的伪像的程序来消除由运动引起的伪像的过程，从而改进了用于获取体内组织的磁共振图像的常规方法。 消除这种自旋不均匀性的一个过程是要求由时间N * T1定义的延迟，其中N是大于或等于5的数值，并且T1是自旋回到平衡纵向状态的衰减的特征时间常数。 另一个程序使用N小于5的值。

公开(公告)号：US20120259202A1

公开(公告)日：2012-10-11

申请号：US13080281

申请日：2011-04-05

申请人： Shaokuan Zheng ,  Mitchell Albert

发明人： Shaokuan Zheng ,  Mitchell Albert

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  A61B5/0402 ,  A61B5/7292 ,  G01R33/565 ,  G01R33/5673 ,  G01R33/5676

摘要： A system and method for recording magnetic resonance images with reduced relaxation-related artifacts. The system and method improve the conventional methods for acquiring magnetic resonance images of in vivo tissue by augmenting the procedures for eliminating artifacts caused by motion with procedures for eliminating artifacts caused by spin of the magnetic resonance-active nuclei in the specimen of interest. One procedure to eliminate such spin inhomogeneities is to require a delay defined by the time N*T1, where N is a numerical value greater than or equal to 5 and T1 is the characteristic time constant for decay of spins back to the equilibrium longitudinal state. Another procedure uses a value of N less than 5.

摘要翻译： 用于记录具有降低的放松相关伪影的磁共振图像的系统和方法。 该系统和方法通过增加用于消除由感兴趣的标本中的磁共振活性核的旋转引起的伪像的程序来消除由运动引起的伪像的过程，从而改进了用于获取体内组织的磁共振图像的常规方法。 消除这种自旋不均匀性的一个过程是要求由时间N * T1定义的延迟，其中N是大于或等于5的数值，并且T1是自旋回到平衡纵向状态的衰减的特征时间常数。 另一个程序使用N小于5的值。