专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100127702A1 SYSTEM FOR ADJUSTING A MAGNETIC FIELD FOR MR AND OTHER USE 有权
标题翻译：用于调整磁场和其他用途的系统
公开(公告)号：US20100127702A1
公开(公告)日：2010-05-27
申请号：US12577644
申请日：2009-10-12
申请人： Andreas Greiser , Renate Jerecic , Peter Kellman , Saurabh Shah , Peter Weale , Sven Zuehlsdorff
发明人： Andreas Greiser , Renate Jerecic , Peter Kellman , Saurabh Shah , Peter Weale , Sven Zuehlsdorff
IPC分类号： G01R33/48
CPC分类号： G01R33/3875 , G01R33/4828 , G01R33/543 , G01R33/56563 , G01R33/5673
摘要： An MR magnetic field inhomogeneity compensation system acquires multiple MR data sets representing luminance intensity values of individual image elements comprising corresponding multiple different image versions of at least a portion of a first imaging slice of patient anatomy including fat and water components. The compensation system employs the multiple MR data sets in solving corresponding multiple simultaneous nonlinear equations to calculate local frequency offset associated with magnetic field inhomogeneity at the individual image element location, for an individual image element of the image elements. The local frequency offset comprises a difference between proton spin frequency at the location and a nominal proton spin frequency. The compensation system derives data representing an electrical signal to be applied to magnetic field generation coils to substantially compensate for determined offset frequencies at the plurality of individual locations. A magnetic field generation coil generates a magnetic field in response to applying the electrical signal to substantially compensate for the magnetic field inhomogeneity at the individual image element location.
摘要翻译： MR磁场不均匀性补偿系统获取多个MR数据集，其表示包括脂肪和水分量的患者解剖结构的第一成像切片的至少一部分的相应多个不同图像形式的各个图像元素的亮度强度值。补偿系统采用多个MR数据集来解决相应的多个同时非线性方程，以计算与图像元素的单个图像元素相关联的与个体图像元素位置处的磁场不均匀性相关的局部频率偏移。本地频率偏移包括位置处的质子自旋频率与标称质子自旋频率之间的差异。补偿系统导出表示要施加到磁场产生线圈的电信号的数据，以基本上补偿多个单独位置处的确定的偏移频率。磁场产生线圈响应于施加电信号而产生磁场，以基本上补偿各个图像元件位置处的磁场不均匀性。

2. 发明授权

US08138759B2 System for adjusting a magnetic field for MR and other use 有权
标题翻译：用于MR调整磁场的系统及其他用途
公开(公告)号：US08138759B2
公开(公告)日：2012-03-20
申请号：US12577644
申请日：2009-10-12
申请人： Andreas Greiser , Renate Jerecic , Peter Kellman , Saurabh Shah , Peter Weale , Sven Zuehlsdorff
发明人： Andreas Greiser , Renate Jerecic , Peter Kellman , Saurabh Shah , Peter Weale , Sven Zuehlsdorff
IPC分类号： G01V3/00
CPC分类号： G01R33/3875 , G01R33/4828 , G01R33/543 , G01R33/56563 , G01R33/5673
摘要： An MR magnetic field inhomogeneity compensation system acquires multiple MR data sets representing luminance intensity values of individual image elements comprising corresponding multiple different image versions of at least a portion of a first imaging slice of patient anatomy including fat and water components. The compensation system employs the multiple MR data sets in solving corresponding multiple simultaneous nonlinear equations to calculate local frequency offset associated with magnetic field inhomogeneity at the individual image element location, for an individual image element of the image elements. The local frequency offset comprises a difference between proton spin frequency at the location and a nominal proton spin frequency. The compensation system derives data representing an electrical signal to be applied to magnetic field generation coils to substantially compensate for determined offset frequencies at the plurality of individual locations. A magnetic field generation coil generates a magnetic field in response to applying the electrical signal to substantially compensate for the magnetic field inhomogeneity at the individual image element location.
摘要翻译： MR磁场不均匀性补偿系统获取多个MR数据集，其表示包括脂肪和水分量的患者解剖结构的第一成像切片的至少一部分的相应多个不同图像形式的各个图像元素的亮度强度值。补偿系统采用多个MR数据集来解决相应的多个同时非线性方程，以计算与图像元素的单个图像元素相关联的与个体图像元素位置处的磁场不均匀性相关的局部频率偏移。本地频率偏移包括位置处的质子自旋频率与标称质子自旋频率之间的差异。补偿系统导出表示要施加到磁场产生线圈的电信号的数据，以基本上补偿多个单独位置处的确定的偏移频率。磁场产生线圈响应于施加电信号而产生磁场，以基本上补偿各个图像元件位置处的磁场不均匀性。

3. 发明申请

US20100019766A1 System for Dynamically Compensating for Inhomogeneity in an MR Imaging Device Magnetic Field 审中-公开
标题翻译：用于动态补偿MR成像装置磁场中的不均匀性的系统
公开(公告)号：US20100019766A1
公开(公告)日：2010-01-28
申请号：US12481649
申请日：2009-06-10
申请人： Sven Zuehlsdorff , Peter Weale , Saurabh Shah , Andreas Greiser
发明人： Sven Zuehlsdorff , Peter Weale , Saurabh Shah , Andreas Greiser
IPC分类号： G01R33/44
CPC分类号： G01R33/3875 , G01R33/243 , G01R33/5614
摘要： A system automatically dynamically compensates for inhomogeneity in an MR imaging device magnetic field. An MR imaging compensation system applies swept frequency magnetic field variation in determining an estimate of proton spin frequency at multiple individual locations associated with individual image elements in an anatomical volume of interest and substantially independently of tissue associated relaxation time. For the multiple individual locations, the system determines an offset frequency comprising a difference between a determined estimate of proton spin frequency associated with an individual image element location and a nominal proton spin frequency. The system derives data representing an electrical signal to be applied to magnetic field generation coils to substantially compensate for determined offset frequencies at the multiple individual locations. An MR magnetic field coil generates a magnetic field in response to applying the electrical signal to substantially compensate for magnetic field variation represented by the determined offset frequencies at the multiple individual locations.
摘要翻译：系统自动动态补偿MR成像装置磁场的不均匀性。 MR成像补偿系统应用扫描频率磁场变化来确定在感兴趣的解剖体积中与各个图像元素相关联的多个单独位置处的质子旋转频率的估计，并且基本上独立于组织相关的弛豫时间。对于多个单独位置，系统确定偏移频率，该偏移频率包括与单个图像元素位置相关联的质子自旋频率的确定估计与标称质子旋转频率之间的差异。系统导出表示要施加到磁场产生线圈的电信号的数据，以基本上补偿多个单独位置处的确定的偏移频率。 MR磁场线圈响应于施加电信号而产生磁场，以基本上补偿由多个单独位置处确定的偏移频率所表示的磁场变化。

4. 发明申请

US20120189183A1 Automatic Registration of Image Series with Varying Contrast Based on Synthetic Images Derived from Intensity Behavior Model 有权
标题翻译：基于强度行为模型合成图像的图像系列自动对准
公开(公告)号：US20120189183A1
公开(公告)日：2012-07-26
申请号：US13237198
申请日：2011-09-20
申请人： Hui Xue , Saurabh Shah , Jens Gühring , Andreas Greiser , Christophe Chefd'hotel , Christoph Guetter , Marie-Pierre Jolly , Sven Zuehlsdorff
发明人： Hui Xue , Saurabh Shah , Jens Gühring , Andreas Greiser , Christophe Chefd'hotel , Christoph Guetter , Marie-Pierre Jolly , Sven Zuehlsdorff
IPC分类号： G06K9/40 , G06K9/00
CPC分类号： G06T5/50 , G01R33/448 , G01R33/56509 , G06T7/30 , G06T2207/10088 , G06T2207/20201 , G06T2207/30048
摘要： A method for performing motion compensation in a series of magnetic resonance (MR) images includes acquiring a set of MR image frames spanning different points along an MR recovery curve. A motion-free synthetic image is generated for each of the acquired MR image frames using prior knowledge pertaining to an MR recovery curve. Each of the acquired MR images is registered to its corresponding generated synthetic images. Motion within each of the acquired MR image is corrected based on its corresponding generated synthetic image that has been registered thereto.
摘要翻译：用于在一系列磁共振（MR）图像中执行运动补偿的方法包括获取沿着MR恢复曲线横跨不同点的一组MR图像帧。使用与MR恢复曲线相关的先前知识，为每个所获取的MR图像帧生成无运动合成图像。所获取的MR图像中的每一个被注册到其对应的生成的合成图像。基于其对应的生成的已经被注册的合成图像来校正所获取的MR图像的每一个内的运动。

5. 发明授权

US08848990B2 Automatic registration of image series with varying contrast based on synthetic images derived from intensity behavior model 有权
标题翻译：基于从强度行为模型导出的合成图像，自动配准具有不同对比度的图像序列
公开(公告)号：US08848990B2
公开(公告)日：2014-09-30
申请号：US13237198
申请日：2011-09-20
申请人： Hui Xue , Saurabh Shah , Jens Gühring , Andreas Greiser , Christophe Chefd'hotel , Christoph Guetter , Marie-Pierre Jolly , Sven Zuehlsdorff
发明人： Hui Xue , Saurabh Shah , Jens Gühring , Andreas Greiser , Christophe Chefd'hotel , Christoph Guetter , Marie-Pierre Jolly , Sven Zuehlsdorff
IPC分类号： G06K9/00 , G06T5/50 , G06T7/00 , G01R33/44 , G01R33/565
CPC分类号： G06T5/50 , G01R33/448 , G01R33/56509 , G06T7/30 , G06T2207/10088 , G06T2207/20201 , G06T2207/30048
摘要： A method for performing motion compensation in a series of magnetic resonance (MR) images includes acquiring a set of MR image frames spanning different points along an MR recovery curve. A motion-free synthetic image is generated for each of the acquired MR image frames using prior knowledge pertaining to an MR recovery curve. Each of the acquired MR images is registered to its corresponding generated synthetic images. Motion within each of the acquired MR image is corrected based on its corresponding generated synthetic image that has been registered thereto.
摘要翻译：用于在一系列磁共振（MR）图像中执行运动补偿的方法包括获取沿着MR恢复曲线横跨不同点的一组MR图像帧。使用与MR恢复曲线相关的先前知识，为每个所获取的MR图像帧生成无运动合成图像。所获取的MR图像中的每一个被注册到其对应的生成的合成图像。基于其对应的生成的已经被注册的合成图像来校正所获取的MR图像的每一个内的运动。

6. 发明申请

US20100045291A1 MAGNETIC RESONANCE APPARATUS AND METHOD TO ACQUIRE AND DISPLAY CALIBRATION IMAGES 有权
标题翻译：磁共振装置和获取和显示校准图像的方法
公开(公告)号：US20100045291A1
公开(公告)日：2010-02-25
申请号：US12545174
申请日：2009-08-21
申请人： Andreas Greiser , Sven Zuehlsdorff
发明人： Andreas Greiser , Sven Zuehlsdorff
IPC分类号： G01R33/48
CPC分类号： G01R33/58 , A61B2560/0223 , G01R33/543 , G01R33/5614 , G01R33/56325 , G01R33/5673
摘要： In a method and magnetic resonance apparatus to acquire and present calibration images of a periodically moving organ with the use of magnetic resonance technology, calibration images are acquired by acquiring measurement data for multiple calibration images during one continuous period of the organ movement, the multiple calibration images differing in their offset frequency and/or in their spatial position in the organ to be examined, and the calibration images in a presentation manner that, from the visual quality of the respective images, allows the user to select (identify) the image acquired with the offset frequency that should then be used to acquire the diagnostic image are displayed to a user.
摘要翻译：在利用磁共振技术获取和呈现周期性运动的器官的校准图像的方法和磁共振装置中，通过在器官移动的连续的一个连续期间获取多个校准图像的测量数据来获取校准图像，多次校准其偏移频率和/或其被检查器官中的空间位置不同的图像，以及以各自图像的视觉质量允许用户选择（识别）获取的图像的呈现方式的校准图像将用于获取诊断图像的偏移频率显示给用户。

7. 发明申请

US20100219831A1 MAGNETIC RESONANCE METHOD CONTROL DEVICE AND SYSTEM FOR IMAGING A VOLUME SEGMENT OF A SUBJECT 有权
标题翻译：磁共振方法控制装置和用于成像主体的音量分段的系统
公开(公告)号：US20100219831A1
公开(公告)日：2010-09-02
申请号：US12715425
申请日：2010-03-02
申请人： Andreas Greiser , Sven Zuehlsdorff
发明人： Andreas Greiser , Sven Zuehlsdorff
IPC分类号： G01R33/48
CPC分类号： G01R33/56325 , G01R33/4835 , G01R33/56308
摘要： For imaging a volume segment by means of a magnetic resonance system, of the volume segment is transferred into a dynamic steady state relative to the magnetization by means of the magnetic resonance system. The following steps are repeatedly executed until the volume segment has been completely measured. The slice is excited by means of the magnetic resonance system. MR signals of the slice are read out. The slice is offset in an overlapping manner such that an overlap range is created by the slice before the offset and the slice after the offset, the overlap range being a predetermined percentile of both the slice before the offset and the slice after the offset.
摘要翻译：为了通过磁共振系统对体积段进行成像，通过磁共振系统将体积段相对于磁化转移到动态稳定状态。重复执行以下步骤，直到音量段被完全测量。该片通过磁共振系统激发。读取切片的MR信号。切片以重叠的方式偏移，使得由偏移之前的切片和偏移之后的切片创建重叠范围，重叠范围是偏移之前的切片和偏移之后的切片的预定百分位数。

8. 发明授权

US08085045B2 Magnetic resonance apparatus and method to acquire and display calibration images 有权
标题翻译：磁共振装置和获取和显示校准图像的方法
公开(公告)号：US08085045B2
公开(公告)日：2011-12-27
申请号：US12545174
申请日：2009-08-21
申请人： Andreas Greiser , Sven Zuehlsdorff
发明人： Andreas Greiser , Sven Zuehlsdorff
IPC分类号： G01V3/00
CPC分类号： G01R33/58 , A61B2560/0223 , G01R33/543 , G01R33/5614 , G01R33/56325 , G01R33/5673
摘要： In a method and magnetic resonance apparatus to acquire and present calibration images of a periodically moving organ with the use of magnetic resonance technology, calibration images are acquired by acquiring measurement data for multiple calibration images during one continuous period of the organ movement, the multiple calibration images differing in their offset frequency and/or in their spatial position in the organ to be examined, and the calibration images in a presentation manner that, from the visual quality of the respective images, allows the user to select (identify) the image acquired with the offset frequency that should then be used to acquire the diagnostic image are displayed to a user.
摘要翻译：在利用磁共振技术获取和呈现周期性运动的器官的校准图像的方法和磁共振装置中，通过在器官移动的连续的一个连续期间获取多个校准图像的测量数据来获取校准图像，多次校准其偏移频率和/或其被检查器官中的空间位置不同的图像，以及以各自图像的视觉质量允许用户选择（识别）获取的图像的呈现方式的校准图像将用于获取诊断图像的偏移频率显示给用户。

9. 发明授权

US08299790B2 Magnetic resonance method control device and system for imaging a volume segment of a subject 有权
标题翻译：磁共振法控制装置和系统，用于对受试者的体积段进行成像
公开(公告)号：US08299790B2
公开(公告)日：2012-10-30
申请号：US12715425
申请日：2010-03-02
申请人： Andreas Greiser , Sven Zuehlsdorff
发明人： Andreas Greiser , Sven Zuehlsdorff
IPC分类号： G01V3/00
CPC分类号： G01R33/56325 , G01R33/4835 , G01R33/56308
摘要： For imaging a volume segment by means of a magnetic resonance system, of the volume segment is transferred into a dynamic steady state relative to the magnetization by means of the magnetic resonance system. The following steps are repeatedly executed until the volume segment has been completely measured. The slice is excited by means of the magnetic resonance system. MR signals of the slice are read out. The slice is offset in an overlapping manner such that an overlap range is created by the slice before the offset and the slice after the offset, the overlap range being a predetermined percentile of both the slice before the offset and the slice after the offset.
摘要翻译：为了通过磁共振系统对体积段进行成像，通过磁共振系统将体积段相对于磁化转移到动态稳定状态。重复执行以下步骤，直到音量段被完全测量。该片通过磁共振系统激发。读取切片的MR信号。切片以重叠的方式偏移，使得由偏移之前的切片和偏移之后的切片创建重叠范围，重叠范围是偏移之前的切片和偏移之后的切片的预定百分位数。

10. 发明申请

US20130272591A1 PHASE SENSITIVE T1 MAPPING IN MAGNETIC RESONANCE IMAGING 有权
标题翻译：磁共振成像中的相敏敏感T1映射
公开(公告)号：US20130272591A1
公开(公告)日：2013-10-17
申请号：US13864716
申请日：2013-04-17
申请人： Hui Xue , Peter Kellman , Andreas Greiser
发明人： Hui Xue , Peter Kellman , Andreas Greiser
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G01R33/50 , G01R33/56509
摘要： Phase sensitive T1 mapping is provided in magnetic resonance (MR). The phase from samples of a modified Look-Locker inversion recovery sequence may be used to normalize contrast, allowing for accurate motion registration without extra information acquisition. The sign may be estimated, allowing T1 mapping with a single application of a non-linear fit.
摘要翻译：在磁共振（MR）中提供相敏T1映射。来自改进的Look-Locker反转恢复序列的样本的相位可以用于对比度的归一化，允许精确的运动注册，而不需要额外的信息获取。可以估计符号，允许使用非线性拟合的单个应用的T1映射。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式