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1. 发明授权

US09196049B2 Method and system for regression-based 4D mitral valve segmentation from 2D+t magnetic resonance imaging slices 有权
标题翻译： 2D + t磁共振成像切片的基于回归的二维二尖瓣分割方法与系统
公开(公告)号：US09196049B2
公开(公告)日：2015-11-24
申请号：US13416168
申请日：2012-03-09
申请人： Razvan Ioan Ionasec , Dime Vitanovski , Alexey Tsymbal , Gareth Funka-Lea , Dorin Comaniciu , Andreas Greiser , Edgar Mueller
发明人： Razvan Ioan Ionasec , Dime Vitanovski , Alexey Tsymbal , Gareth Funka-Lea , Dorin Comaniciu , Andreas Greiser , Edgar Mueller
IPC分类号： A61B5/055 , G06T7/00
CPC分类号： G06T7/0083 , G06T7/12 , G06T2207/10088 , G06T2207/20076 , G06T2207/20081 , G06T2207/30048
摘要： A system and method for regression-based segmentation of the mitral valve in 2D+t cardiac magnetic resonance (CMR) slices is disclosed. The 2D+t CMR slices are acquired according to a mitral valve-specific acquisition protocol introduced herein. A set of mitral valve landmarks is detected in each 2D CMR slice and mitral valve contours are estimated in each 2D CMR slice based on the detected landmarks. A full mitral valve model is reconstructed from the mitral valve contours estimated in the 2D CMR slices using a trained regression model. Each 2D CMR slice may be a cine image acquired over a full cardiac cycle. In this case, the segmentation method reconstructs a patient-specific 4D dynamic mitral valve model from the 2D+t CMR image data.
摘要翻译：公开了一种用于2D + t心脏磁共振（CMR）切片二尖瓣回归分割的系统和方法。根据本文引入的二尖瓣特异性获取方案获取2D + t CMR切片。在每个2D CMR切片中检测到一组二尖瓣地标，并且基于检测到的界标在每个2D CMR切片中估计二尖瓣轮廓。使用训练有素的回归模型，从2D CMR切片中估算的二尖瓣轮廓重建完整的二尖瓣模型。每个2D CMR切片可以是在整个心动周期上获取的电影图像。在这种情况下，分割方法从2D + t CMR图像数据重建患者特有的4D动态二尖瓣模型。

2. 发明申请

US20120232379A1 Method and System for Regression-Based 4D Mitral Valve Segmentation From 2D+t Magnetic Resonance Imaging Slices 有权
标题翻译：从2D + t磁共振成像切片回归基于4D二尖瓣分割的方法和系统
公开(公告)号：US20120232379A1
公开(公告)日：2012-09-13
申请号：US13416168
申请日：2012-03-09
申请人： Razvan Ioan Ionasec , Dime Vitanovski , Alexey Tsymbal , Gareth Funka-Lea , Dorin Comaniciu , Andreas Greiser , Edgar Mueller
发明人： Razvan Ioan Ionasec , Dime Vitanovski , Alexey Tsymbal , Gareth Funka-Lea , Dorin Comaniciu , Andreas Greiser , Edgar Mueller
IPC分类号： A61B5/055
CPC分类号： G06T7/0083 , G06T7/12 , G06T2207/10088 , G06T2207/20076 , G06T2207/20081 , G06T2207/30048
摘要： A system and method for regression-based segmentation of the mitral valve in 2D+t cardiac magnetic resonance (CMR) slices is disclosed. The 2D+t CMR slices are acquired according to a mitral valve-specific acquisition protocol introduced herein. A set of mitral valve landmarks is detected in each 2D CMR slice and mitral valve contours are estimated in each 2D CMR slice based on the detected landmarks. A full mitral valve model is reconstructed from the mitral valve contours estimated in the 2D CMR slices using a trained regression model. Each 2D CMR slice may be a cine image acquired over a full cardiac cycle. In this case, the segmentation method reconstructs a patient-specific 4D dynamic mitral valve model from the 2D+t CMR image data.
摘要翻译：公开了一种用于2D + t心脏磁共振（CMR）切片二尖瓣回归分割的系统和方法。根据本文引入的二尖瓣特异性获取方案获取2D + t CMR切片。在每个2D CMR切片中检测到一组二尖瓣地标，并且基于检测到的界标在每个2D CMR切片中估计二尖瓣轮廓。使用训练有素的回归模型，从2D CMR切片中估算的二尖瓣轮廓重建完整的二尖瓣模型。每个2D CMR切片可以是在整个心动周期上获取的电影图像。在这种情况下，分割方法从2D + t CMR图像数据重建患者特定的4D动态二尖瓣模型。

3. 发明申请

US20140062481A1 METHOD AND MAGNETIC RESONANCE SYSTEM FOR MR IMAGING OF A PREDETERMINED VOLUME SEGMENT OF A LIVING EXAMINATION SUBJECT BY STIMULATION OF THE EXAMINATION SUBJECT 有权
标题翻译：方法和磁共振系统，用于通过刺激检查对象进行生活检查的预测体积分数
公开(公告)号：US20140062481A1
公开(公告)日：2014-03-06
申请号：US14018761
申请日：2013-09-05
申请人： Andreas Greiser , Jens Guehring , Randall Kroeker , Edgar Mueller , Manuela Rick , Michaela Schmidt , Aurelien Stalder
发明人： Andreas Greiser , Jens Guehring , Randall Kroeker , Edgar Mueller , Manuela Rick , Michaela Schmidt , Aurelien Stalder
IPC分类号： G01R33/56
CPC分类号： G01R33/56 , G01R33/56366
摘要： In MR imaging of a predetermined volume segment of a living examination subject, the examination subject is stimulated with a defined stimulation pattern, MR data of the predetermined volume segment, are acquired, and MR images based on the MR data are generated that depend on the stimulation pattern. The predetermined volume segment is an internal organ or muscle tissue of the examination subject.
摘要翻译：在生物检查对象的预定体积段的MR成像中，以确定的刺激模式刺激检查对象，获取预定体积段的MR数据，并且生成依赖于MR数据的MR图像刺激模式。预定体积段是检查对象的内部器官或肌肉组织。

4. 发明授权

US09465093B2 Method and magnetic resonance system for MR imaging of a predetermined volume segment of a living examination subject by stimulation of the examination subject 有权
标题翻译：通过刺激检查对象，对生活检查对象的预定体积段进行MR成像的方法和磁共振系统
公开(公告)号：US09465093B2
公开(公告)日：2016-10-11
申请号：US14018761
申请日：2013-09-05
申请人： Andreas Greiser , Jens Guehring , Randall Kroeker , Edgar Mueller , Manuela Rick , Michaela Schmidt , Aurelien Stalder
发明人： Andreas Greiser , Jens Guehring , Randall Kroeker , Edgar Mueller , Manuela Rick , Michaela Schmidt , Aurelien Stalder
IPC分类号： G01R33/56 , G01R33/563
CPC分类号： G01R33/56 , G01R33/56366
摘要： In MR imaging of a predetermined volume segment of a living examination subject, the examination subject is stimulated with a defined stimulation pattern, MR data of the predetermined volume segment, are acquired, and MR images based on the MR data are generated that depend on the stimulation pattern. The predetermined volume segment is an internal organ or muscle tissue of the examination subject.
摘要翻译：在生物检查对象的预定体积段的MR成像中，以确定的刺激模式刺激检查对象，获取预定体积段的MR数据，并且生成依赖于MR数据的MR图像刺激模式。预定体积段是检查对象的内部器官或肌肉组织。

5. 发明授权

US08798942B2 Method and device for phase-sensitive flow measurement by a magnetic resonance 有权
标题翻译：通过磁共振对相敏流量测量的方法和装置
公开(公告)号：US08798942B2
公开(公告)日：2014-08-05
申请号：US12975840
申请日：2010-12-22
申请人： Andreas Greiser , Edgar Mueller , Michael Zenge
发明人： Andreas Greiser , Edgar Mueller , Michael Zenge
IPC分类号： G01F1/00 , G01F7/00 , A61B5/05 , G01V3/00
CPC分类号： G01R33/56316 , G01R33/56383
摘要： In a method and a device for phase-sensitive flow measurement of a volume segment of an examination subject in a measurement system, the volume segment is divided into multiple partial volume segments and the following steps are executed repeatedly until the volume segment has been completely measured: movement of a table such that a center of one of the partial volume segments to be measured essentially corresponds to the isocenter of the magnetic resonance system, and implementation of the phase-sensitive flow measurement for the partial volume segment to be measured while the center of the partial volume segment essentially corresponds to the isocenter.
摘要翻译：在用于测量系统中的检查对象的体积段的相敏度流量测量的方法和装置中，将体积段划分成多个部分体积段，并且重复执行以下步骤，直到体积段已被完全测量：使得要测量的部分体积段中的一个的中心基本上对应于磁共振系统的等角点的台的移动，以及在中心处测量的部分体积段的相敏流测量的实现的部分体积段基本上对应于等角点。

6. 发明申请

US20110153231A1 METHOD AND DEVICE FOR PHASE-SENSITIVE FLOW MEASUREMENT BY A MAGNETIC RESONANCE 有权
标题翻译：用于通过磁共振测量相位敏感流量的方法和装置
公开(公告)号：US20110153231A1
公开(公告)日：2011-06-23
申请号：US12975840
申请日：2010-12-22
申请人： Andreas Greiser , Edgar Mueller , Michael Zenge
发明人： Andreas Greiser , Edgar Mueller , Michael Zenge
IPC分类号： G06F19/00
CPC分类号： G01R33/56316 , G01R33/56383
摘要： In a method and a device for phase-sensitive flow measurement of a volume segment of an examination subject in a measurement system, the volume segment is divided into multiple partial volume segments and the following steps are executed repeatedly until the volume segment has been completely measured: movement of a table such that a center of one of the partial volume segments to be measured essentially corresponds to the isocenter of the magnetic resonance system, and implementation of the phase-sensitive flow measurement for the partial volume segment to be measured while the center of the partial volume segment essentially corresponds to the isocenter.
摘要翻译：在用于测量系统中的检查对象的体积段的相敏度流量测量的方法和装置中，将体积段划分成多个部分体积段，并且重复执行以下步骤，直到体积段已被完全测量：使得要测量的部分体积段中的一个的中心基本上对应于磁共振系统的等角点的台的移动，以及在中心处测量的部分体积段的相敏流测量的实现的部分体积段基本上对应于等角点。

7. 发明授权

US10466325B2 Recognition of repetition patterns in MR sequences 有权
公开(公告)号：US10466325B2
公开(公告)日：2019-11-05
申请号：US15657343
申请日：2017-07-24
申请人： Andreas Greiser , David Grodzki , Daniel Nico Splitthoff
发明人： Andreas Greiser , David Grodzki , Daniel Nico Splitthoff
IPC分类号： G01V3/00 , G01R33/54 , G01R33/30 , G01R33/385 , G01R33/28 , G01R33/36
摘要： The disclosure relates to a method for determining a sequence information element of a magnetic resonance sequence, a computer program product and an evaluation unit for performing such a method, and also a magnetic resonance device having such an evaluation unit. The method includes a determination of the sequence information element based on at least one pattern of the magnetic resonance sequence.

8. 发明授权

US09547059B2 Method for a rapid determination of spatially resolved magnetic resonance relaxation parameters in an area of examination 有权
标题翻译：在检查区域快速测定空间分辨磁共振松弛参数的方法
公开(公告)号：US09547059B2
公开(公告)日：2017-01-17
申请号：US13866328
申请日：2013-04-19
申请人： Andreas Greiser , Peter Schmitt , Hui Xue
发明人： Andreas Greiser , Peter Schmitt , Hui Xue
IPC分类号： G01V3/00 , G01R33/50 , G01R33/56 , G01R33/565
CPC分类号： G01R33/50 , G01R33/56 , G01R33/56509
摘要： In a method for a rapid determination of spatially resolved magnetic resonance relaxation parameters in an area of examination, a preparation pulse is radiated into the area of examination. During the relaxation of the longitudinal magnetization, spatially encoded magnetic resonance signals are acquired at a minimum of two different points in time using a fast magnetic resonance sequence. At each inversion time, an image data record is reconstructed from the magnetic resonance signals, which are elastically registered to each other. From the recorded image data records, values of magnetic resonance relaxation parameters are spatially accurately determined.
摘要翻译：在用于在检查区域中快速确定空间分辨的磁共振松弛参数的方法中，准备脉冲被辐射到检查区域中。在松弛纵向磁化期间，使用快速磁共振序列在至少两个不同的时间点获取空间编码的磁共振信号。在每个反转时间，从彼此弹性对准的磁共振信号重建图像数据记录。从记录的图像数据记录中，磁共振松弛参数的值在空间上被精确地确定。

9. 发明申请

US20160377692A1 RETRACTABLE MR COIL DEVICE 审中-公开
标题翻译：可回收MR线圈设备
公开(公告)号：US20160377692A1
公开(公告)日：2016-12-29
申请号：US15190866
申请日：2016-06-23
申请人： Peter Gall , Andreas Greiser , Martin Harder , Katharina Hesels , Hans-Peter Hollenbach , Esther Raithel , Stephan Zink
发明人： Peter Gall , Andreas Greiser , Martin Harder , Katharina Hesels , Hans-Peter Hollenbach , Esther Raithel , Stephan Zink
IPC分类号： G01R33/34 , G01R33/30
CPC分类号： G01R33/34084 , G01R33/3415
摘要： A magnetic resonance coil apparatus, a magnetic resonance apparatus and a method for handling a magnetic resonance coil apparatus are provided. The magnetic resonance coil apparatus includes a first coil unit and a second coil unit. The first coil unit and the second coil unit are configured to rotate about a longitudinal axis relative to one another.
摘要翻译：提供一种磁共振线圈装置，磁共振装置和用于处理磁共振线圈装置的方法。磁共振线圈装置包括第一线圈单元和第二线圈单元。第一线圈单元和第二线圈单元构造成围绕纵向轴线相对于彼此旋转。

10. 发明申请

US20140084916A1 MAGNETIC RESONANCE PHASE CONTRAST ANGIOGRAPHY WITH ROTATING CODING GRADIENTS 有权
标题翻译：具有旋转编码等级的磁共振相位对比度图
公开(公告)号：US20140084916A1
公开(公告)日：2014-03-27
申请号：US14036279
申请日：2013-09-25
申请人： Andreas Greiser , Peter Schmitt
发明人： Andreas Greiser , Peter Schmitt
IPC分类号： G01R33/563
CPC分类号： G01R33/5635 , G01R33/4826 , G01R33/56316
摘要： In a method and magnetic resonance (MR) system to generate an MR phase contrast angiography image of an examination subject, velocity-dependent phase information is impressed on moving spins in the examination subject by switching additional bipolar coding gradients that are in addition to the basic phase coding and readout gradients. For the creation of the MR phase contrast angiography images, the MR signals of the examination subject are read out in raw data space with a non-Cartesian acquisition pattern during a readout gradient. The additional bipolar coding gradients switched such that they proceed along a coordinate system that corresponds to the non-Cartesian acquisition pattern, and such that a coordinate axis of this coordinate system proceed along the readout gradient.
摘要翻译：在用于产生检查对象的MR相位对比血管造影图像的方法和磁共振（MR）系统中，速度相关相位信息通过切换附加的基本的双极性编码梯度而印在检查对象的移动自旋上相位编码和读出梯度。为了创建MR相位对比血管造影图像，检查对象的MR信号在读数梯度期间以非笛卡尔采集模式在原始数据空间中被读出。附加的双极编码梯度被切换，使得它们沿着对应于非笛卡尔采集模式的坐标系进行，并且使得该坐标系的坐标轴沿着读出梯度进行。

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