公开(公告)号：US06965234B1

公开(公告)日：2005-11-15

申请号：US10960212

申请日：2004-10-06

申请人： Charles H. Cunningham ,  Juan M. Santos ,  John M. Pauly ,  Graham Arnold Wright ,  Jeffrey Alan Stainsby ,  John Andrew Derbyshire

发明人： Charles H. Cunningham ,  Juan M. Santos ,  John M. Pauly ,  Graham Arnold Wright ,  Jeffrey Alan Stainsby ,  John Andrew Derbyshire

IPC分类号： G01R33/46 ,  G01R33/483 ,  G01V3/00

CPC分类号： G01R33/4838 ,  G01R33/4616 ,  G01R33/4833

摘要： A RF Excitation pulse for MRI applications has built-in saturation sidebands, thereby reducing the time for an excitation sequence. The pulse is created using the Shinnar-Le Roux (SLR) transform and designing beta-polynomials for a desired image slice excitation and for saturation of RF excitation such as by de-phasing in regions adjacent to the desired image slice. The beta-polynomials are combined and an inverse SLR transform creates the RF pulse from the combined beta-polynomial.

摘要翻译： 用于MRI应用的RF激励脉冲具有内置饱和边带，从而减少激励序列的时间。 使用Shinnar-Le Roux（SLR）变换创建脉冲，并为期望的图像切片激励设计β多项式，并且通过例如通过在与期望的图像切片相邻的区域中去相位来设置RF激发的饱和度。 β多项式被组合，逆SLR变换从组合的β多项式创建RF脉冲。

公开(公告)号：US20080197842A1

公开(公告)日：2008-08-21

申请号：US12029583

申请日：2008-02-12

申请人： Michael Lustig ,  Juan M. Santos ,  David L. Donoho ,  John M. Pauly

发明人： Michael Lustig ,  Juan M. Santos ,  David L. Donoho ,  John M. Pauly

IPC分类号： G01R33/54

CPC分类号： G01R33/5611 ,  G01R33/5608 ,  G01R33/561 ,  G01R33/56308 ,  G01R33/5635

摘要： A method of dynamic resonance imaging is provided. A magnetic resonance imaging excitation is applied. Data in 2 or 3 spatial frequency dimensions, and time is acquired, where an acquisition order in at least one spatial frequency dimension and the time dimension are in a pseudo-random order. The pseudo-random order and enforced sparsity constraints are used to reconstruct a time series of dynamic magnetic resonance images.

摘要翻译： 提供了动态共振成像的方法。 应用磁共振成像激励。 获取2或3个空间频率维度和时间的数据，其中至少一个空间频率维度和时间维度中的获取顺序处于伪随机顺序。 伪随机顺序和强制稀疏约束用于重建动态磁共振图像的时间序列。

公开(公告)号：US07602183B2

公开(公告)日：2009-10-13

申请号：US12029583

申请日：2008-02-12

申请人： Michael Lustig ,  Juan M. Santos ,  David L Donoho ,  John M. Pauly

发明人： Michael Lustig ,  Juan M. Santos ,  David L Donoho ,  John M. Pauly

IPC分类号： G01V3/00

CPC分类号： G01R33/5611 ,  G01R33/5608 ,  G01R33/561 ,  G01R33/56308 ,  G01R33/5635

摘要： A method of dynamic resonance imaging is provided. A magnetic resonance imaging excitation is applied. Data in 2 or 3 spatial frequency dimensions, and time is acquired, where an acquisition order in at least one spatial frequency dimension and the time dimension are in a pseudo-random order. The pseudo-random order and enforced sparsity constraints are used to reconstruct a time series of dynamic magnetic resonance images.

摘要翻译： 提供了动态共振成像的方法。 应用磁共振成像激励。 获取2或3个空间频率维度和时间的数据，其中至少一个空间频率维度和时间维度中的获取顺序处于伪随机顺序。 伪随机顺序和强制稀疏约束用于重建动态磁共振图像的时间序列。

公开(公告)号：US20090216108A1

公开(公告)日：2009-08-27

申请号：US12322336

申请日：2009-01-30

申请人： Jose E. Barrera ,  Andrew B. Holbrook ,  Juan M. Santos ,  Gerald R. Popelka

发明人： Jose E. Barrera ,  Andrew B. Holbrook ,  Juan M. Santos ,  Gerald R. Popelka

IPC分类号： A61B5/055 ,  A61B5/0205

CPC分类号： A61B5/055 ,  A61B5/02007 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/08 ,  A61B5/1073 ,  A61B5/145 ,  A61B5/4818 ,  A61B5/7285

摘要： Obstructive sleep apnea diagnosis based on peripheral arterial tone (PAT) and real-time magnetic resonance imaging (MRI) is provided. PAT and other physiological data are used to identify respiratory events experienced by a subject with obstructive sleep apnea. MRI images are recorded at least during the respiratory events to identify airway obstructions responsible for the sleep apnea events. The MRI images are recorded in real-time at a high frame rate during the sleep apnea events. The PAT signals and MRI images are collected while the subject is in a sleep state. PAT signals can also be used to identify sleep apnea events and trigger an MRI device to begin recording, thereby reducing the costs associated with recording extraneous and large amounts of MRI data.

摘要翻译： 提供基于外周动脉音（PAT）和实时磁共振成像（MRI）的阻塞性睡眠呼吸暂停诊断。 PAT和其他生理数据用于识别受阻塞的睡眠呼吸暂停患者所经历的呼吸事件。 至少在呼吸事件期间记录MRI图像以识别负责睡眠呼吸暂停事件的呼吸道障碍物。 在睡眠呼吸暂停事件期间以高帧率实时记录MRI图像。 当受试者处于睡眠状态时，收集PAT信号和MRI图像。 PAT信号也可用于识别睡眠呼吸暂停事件，并触发MRI设备开始记录，从而降低与记录外来和大量MRI数据相关的成本。