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公开(公告)号：US08648593B2
公开(公告)日：2014-02-11
申请号：US13221999
申请日：2011-08-31
申请人： Jeffrey L. Duerk , Jeffrey L. Sunshine , Mark A. Griswold , Jamal J. Derakhshan , Sherif G. Nour
发明人： Jeffrey L. Duerk , Jeffrey L. Sunshine , Mark A. Griswold , Jamal J. Derakhshan , Sherif G. Nour
IPC分类号： G01V3/00
CPC分类号： G01R33/5613 , G01R33/5607 , G01R33/5614
摘要： Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.
摘要翻译： 描述了与控制磁共振成像（MRI）装置执行平衡的稳态自由进动（bSSFP）技术相关联的系统，方法和其他实施例，其包括具有差分速度编码和破坏残余横向磁化的磁化准备。 示例系统，方法和其他实施例也与响应于bSSFP技术获取深色血液图像相关联。 深色血液图像是其中从经受bSSFP技术和磁化制备的物体获得的NMR信号包含来自流动自旋的NMR信号和来自非流动自旋的NMR信号以期望的比例。
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公开(公告)号：US08208986B2
公开(公告)日：2012-06-26
申请号：US12283196
申请日：2008-09-10
IPC分类号： A61B5/05
CPC分类号： G01R33/5614 , A61B5/055 , G01R33/5602 , G01R33/5607 , G01R33/56333
摘要： Systems, methods, and other embodiments associated with steady state dark blood magnetic resonance imaging MRI are described. One example method includes controlling an MRI apparatus to produce a steady state pulse sequence. The example method may also include controlling the MRI apparatus to generate radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence. The steady state pulse sequence is different from conventional steady state pulses in that it is characterized by regularly spaced slice selection excitation pulses to excite a region to be imaged in an object to be imaged using a consistent repetition time (TR), a set of readout modules, and a set of a magnetization preparation modules. A magnetization preparation module is characterized by gradients associated with imaging not being active, gradients associated with slice selection being active, and RF pulses associated with slice selection being active.
摘要翻译： 描述与稳态暗血液磁共振成像MRI相关联的系统，方法和其它实施方案。 一个示例性方法包括控制MRI装置以产生稳态脉冲序列。 该示例性方法还可以包括控制MRI设备以产生与稳态脉冲序列相关联的射频（RF）能量和磁梯度。 稳态脉冲序列与常规稳态脉冲不同，其特征在于规则间隔的切片选择激励脉冲，以使用一致的重复时间（TR）来激发待成像物体中要被成像的区域，一组读出 模块和一组磁化准备模块。 磁化准备模块的特征在于与成像不相关的梯度，与切片选择相关的梯度是有效的，以及与切片选择相关联的RF脉冲是有效的。
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公开(公告)号：US20100063380A1
公开(公告)日：2010-03-11
申请号：US12283196
申请日：2008-09-10
IPC分类号： A61B5/055
CPC分类号： G01R33/5614 , A61B5/055 , G01R33/5602 , G01R33/5607 , G01R33/56333
摘要： Systems, methods, and other embodiments associated with steady state dark blood magnetic resonance imaging MRI are described. One example method includes controlling an MRI apparatus to produce a steady state pulse sequence. The example method may also include controlling the MRI apparatus to generate radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence. The steady state pulse sequence is different from conventional steady state pulses in that it is characterized by regularly spaced slice selection excitation pulses to excite a region to be imaged in an object to be imaged using a consistent repetition time (TR), a set of readout modules, and a set of a magnetization preparation modules. A magnetization preparation module is characterized by gradients associated with imaging not being active, gradients associated with slice selection being active, and RF pulses associated with slice selection being active.
摘要翻译： 描述与稳态暗血液磁共振成像MRI相关联的系统，方法和其它实施方案。 一个示例性方法包括控制MRI装置以产生稳态脉冲序列。 该示例性方法还可以包括控制MRI设备以产生与稳态脉冲序列相关联的射频（RF）能量和磁梯度。 稳态脉冲序列与常规稳态脉冲不同，其特征在于规则间隔的切片选择激励脉冲，以使用一致的重复时间（TR）来激发待成像对象中要成像的区域，一组读出 模块和一组磁化准备模块。 磁化准备模块的特征在于与成像不相关的梯度，与切片选择相关的梯度是有效的，以及与切片选择相关联的RF脉冲是有效的。
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4.发明授权Mitigating saturation artifacts associated with intersecting plane TrueFISP acquisitions through grouped reverse centric phase encoding 有权通过分组的反向中心相位编码减少与相交平面TrueFISP采集相关联的饱和伪影公开(公告)号：US08169217B2
公开(公告)日：2012-05-01
申请号：US12423952
申请日：2009-04-15
IPC分类号： G01V3/00
CPC分类号： G01R33/5613 , G01R33/4818 , G01R33/5614 , G01R33/56518
摘要： Systems methods, and other embodiments associated with acquiring intersecting TrueFISP images using grouped reverse centric phase encoding are described. One example method includes controlling an MRI apparatus to produce a TrueFISP sequence that delays acquisition of the center of k-space to reduce saturation banding artifacts. The example method also includes controlling the MRI apparatus to produce a TrueFISP sequence that reduces eddy current artifacts by grouping (e.g., pairing) lines in k-space. The method concludes by acquiring NMR signal in response to the TrueFISP sequence.
摘要翻译： 描述了使用分组反向中心相位编码获取相交的TrueFISP图像相关联的系统方法和其他实施例。 一个示例性方法包括控制MRI装置以产生延迟获取k空间的中心以减少饱和带状伪影的TrueFISP序列。 该示例性方法还包括控制MRI装置以产生通过在k空间中分组（例如，配对）线来减少涡流伪像的TrueFISP序列。 该方法通过响应于TrueFISP序列获得NMR信号得出结论。
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公开(公告)号：US08030919B2
公开(公告)日：2011-10-04
申请号：US12423941
申请日：2009-04-15
申请人： Jeffrey L. Duerk , Jeffrey L. Sunshine , Mark A. Griswold , Jamal J. Derakhshan , Sherif G. Nour
发明人： Jeffrey L. Duerk , Jeffrey L. Sunshine , Mark A. Griswold , Jamal J. Derakhshan , Sherif G. Nour
IPC分类号： G01V3/00
CPC分类号： G01R33/5613 , G01R33/5607 , G01R33/5614
摘要： Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.
摘要翻译： 描述了与控制磁共振成像（MRI）装置执行平衡的稳态自由进动（bSSFP）技术相关联的系统，方法和其他实施例，其包括具有差分速度编码和破坏残余横向磁化的磁化准备。 示例系统，方法和其他实施例也与响应于bSSFP技术获取深色血液图像相关联。 深色血液图像是其中从经受bSSFP技术和磁化制备的物体获得的NMR信号包含来自流动自旋的NMR信号和来自非流动自旋的NMR信号以期望的比例。
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6.发明申请公开(公告)号：US20090261827A1
公开(公告)日：2009-10-22
申请号：US12423952
申请日：2009-04-15
IPC分类号： G01R33/44
CPC分类号： G01R33/5613 , G01R33/4818 , G01R33/5614 , G01R33/56518
摘要： Systems methods, and other embodiments associated with acquiring intersecting TrueFISP images using grouped reverse centric phase encoding are described. One example method includes controlling an MRI apparatus to produce a TrueFISP sequence that delays acquisition of the center of k-space to reduce saturation banding artifacts. The example method also includes controlling the MRI apparatus to produce a TrueFISP sequence that reduces eddy current artifacts by grouping (e.g., pairing) lines in k-space. The method concludes by acquiring NMR signal in response to the TrueFISP sequence.
摘要翻译： 描述了使用分组反向中心相位编码获取相交的TrueFISP图像相关联的系统方法和其他实施例。 一个示例性方法包括控制MRI装置以产生延迟获取k空间的中心以减少饱和带状伪影的TrueFISP序列。 该示例性方法还包括控制MRI装置以产生通过在k空间中分组（例如，配对）线来减少涡流伪像的TrueFISP序列。 该方法通过响应于TrueFISP序列获得NMR信号得出结论。
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7.发明申请公开(公告)号：US20090177075A1
公开(公告)日：2009-07-09
申请号：US12290343
申请日：2008-10-29
IPC分类号： A61B5/055
CPC分类号： G01R33/5613 , G01R33/5602 , G01R33/5614
摘要： Systems, methods, and other embodiments associated with RE-TOSSI are described. One system embodiment includes an MRI apparatus configured to produce a RE-TOSSI pulse sequence and to acquire T2-weighted images in response to the RE-TOSSI pulse sequence. An example RE-TOSSI pulse sequence includes a TOSSI portion and a non-inverting, non-TOSSI portion.
摘要翻译： 描述了与RE-TOSSI相关联的系统，方法和其它实施例。 一个系统实施例包括被配置为产生RE-TOSSI脉冲序列并响应于RE-TOSSI脉冲序列获取T2加权图像的MRI设备。 示例性RE-TOSSI脉冲序列包括TOSSI部分和非反相非TOSSI部分。
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公开(公告)号：US20120001630A1
公开(公告)日：2012-01-05
申请号：US13221999
申请日：2011-08-31
申请人： Jeffrey L. DUERK , Jeffrye L. Sunshine , Mark A. Griswold , Jamal J. Derakhshan , Sherif G. Nour
发明人： Jeffrey L. DUERK , Jeffrye L. Sunshine , Mark A. Griswold , Jamal J. Derakhshan , Sherif G. Nour
IPC分类号： G01R33/30
CPC分类号： G01R33/5613 , G01R33/5607 , G01R33/5614
摘要： Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.
摘要翻译： 描述了与控制磁共振成像（MRI）装置执行平衡的稳态自由进动（bSSFP）技术相关联的系统，方法和其他实施例，其包括具有差分速度编码和破坏残余横向磁化的磁化准备。 示例系统，方法和其他实施例也与响应于bSSFP技术获取深色血液图像相关联。 深色血液图像是其中从经受bSSFP技术和磁化制备的物体获得的NMR信号包含来自流动自旋的NMR信号和来自非流动自旋的NMR信号以期望的比例。
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9.发明授权公开(公告)号：US08188735B2
公开(公告)日：2012-05-29
申请号：US12290343
申请日：2008-10-29
IPC分类号： G01V3/00
CPC分类号： G01R33/5613 , G01R33/5602 , G01R33/5614
摘要： Systems, methods, and other embodiments associated with RE-TOSSI are described. One system embodiment includes an MRI apparatus configured to produce a RE-TOSSI pulse sequence and to acquire T2-weighted images in response to the RE-TOSSI pulse sequence. An example RE-TOSSI pulse sequence includes a TOSSI portion and a non-inverting, non-TOSSI portion.
摘要翻译： 描述了与RE-TOSSI相关联的系统，方法和其它实施例。 一个系统实施例包括被配置为产生RE-TOSSI脉冲序列并响应于RE-TOSSI脉冲序列获取T2加权图像的MRI设备。 示例性RE-TOSSI脉冲序列包括TOSSI部分和非反相非TOSSI部分。
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公开(公告)号：US09480535B2
公开(公告)日：2016-11-01
申请号：US12423932
申请日：2009-04-15
CPC分类号： A61B90/37 , A61B18/20 , A61B2090/374
摘要： Systems, methods, and other embodiments associated with tracking an ablative device and monitoring an ablation produced by the ablative device are described. One example method includes acquiring a magnetic resonance (MR) image of an ablative device inserted in a body and selectively controlling positioning of the ablative device based, at least in part on the MR image. The MR image may be continuously provided in real-time by an interventional MR imaging apparatus programmed to image using a tri-orthogonal plane sequence. The method may also include acquiring an MR image of an ablation performed by the ablative device, and selectively controlling the ablative device based, at least in part, on the MR image. The MR image may also be provided by the IMRI apparatus operating according to a tri-orthogonal plane sequence. In one example, the ablation may treat hypopharyngeal obstructive sleep apnea by reducing tongue base volume.
摘要翻译： 描述了跟踪消融装置并监测消融装置产生的消融的系统，方法和其它实施例。 一个示例性方法包括：至少部分地基于MR图像获取插入到体内的消融装置的磁共振（MR）图像，并选择性地控制消融装置的定位。 可以通过编程为使用三正交平面序列成像的介入MR成像设备来实时地连续提供MR图像。 该方法还可以包括获取消融装置进行的消融的MR图像，以及至少部分地基于MR图像选择性地控制消融装置。 MR图像也可以由根据三正交平面序列操作的IMRI设备提供。 在一个实例中，消融可以通过减少舌根体积来治疗下咽阻塞性睡眠呼吸暂停。
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