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1.发明申请Method and magnetic resonance tomography apparatus for producing phase-coded flow images 有权用于生成相位编码流图像的方法和磁共振断层摄影装置公开(公告)号：US20050156593A1
公开(公告)日：2005-07-21
申请号：US10997706
申请日：2004-11-24
CPC分类号： G01R33/56316 , A61B5/0263 , G01R33/5608 , G06T7/11 , G06T7/168 , G06T7/187 , G06T2207/10088 , G06T2207/30048
摘要： In a method and MR apparatus for the automatic segmentation of flow images acquired by magnetic resonance tomography for the depiction of tissue or organs traversed with fluid such as blood, at least one phase image of a selected region of the subject is acquired by magnetic resonance tomography, and fluid-traversed regions in the at least one phase image are automatically segmented.
摘要翻译： 在用于通过磁共振断层扫描获取的用于描绘用诸如血液的流体穿过的组织或器官的流动图像的自动分割的方法和MR装置中，通过磁共振断层扫描获得受试者的选定区域的至少一个相位图像 ，并且至少一个相位图像中的流体横越区域被自动分割。
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2.发明授权Method and magnetic resonance tomography apparatus for producing phase-coded flow images 有权用于生成相位编码流图像的方法和磁共振断层摄影装置公开(公告)号：US07145334B2
公开(公告)日：2006-12-05
申请号：US10997706
申请日：2004-11-24
IPC分类号： G01V3/00
CPC分类号： G01R33/56316 , A61B5/0263 , G01R33/5608 , G06T7/11 , G06T7/168 , G06T7/187 , G06T2207/10088 , G06T2207/30048
摘要： In a method and MR apparatus for the automatic segmentation of flow images acquired by magnetic resonance tomography for the depiction of tissue or organs traversed with fluid such as blood, at least one phase image of a selected region of the subject is acquired by magnetic resonance tomography, and fluid-traversed regions in the at least one phase image are automatically segmented.
摘要翻译： 在用于通过磁共振断层扫描获取的用于描绘用诸如血液的流体穿过的组织或器官的流动图像的自动分割的方法和MR装置中，通过磁共振断层扫描获得受试者的选定区域的至少一个相位图像 ，并且至少一个相位图像中的流体横越区域被自动分割。
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公开(公告)号：US20050033178A1
公开(公告)日：2005-02-10
申请号：US10625392
申请日：2003-07-23
申请人： Stefan Assmann , Oliver Schreck , Paul Finn , Stephanie Shors
发明人： Stefan Assmann , Oliver Schreck , Paul Finn , Stephanie Shors
CPC分类号： A61B5/7264 , A61B5/055
摘要： In a method and apparatus for classifying plaque in a blood vessel of a living subject using magnetic resonance imaging, a first magnetic resonance image is produced with a first intensity distribution of a cross-section of a vessel containing plaque, and a contrast agent is injected into the vascular system and a second magnetic resonance image of the cross-section of the vessel is produced with a second intensity distribution after a first time duration following the contrast agent injection, and a third magnetic resonance image of the cross-section of the vessel is produced with a third intensity distribution after a second time duration following the injection of the contrast agent, and the plaque is classified dependent on the respective intensity distributions of the magnetic resonance images.
摘要翻译： 在使用磁共振成像对生物体的血管分类斑块的方法和装置中，以包含斑块的血管的横截面的第一强度分布产生第一磁共振图像，并注射造影剂 进入血管系统，并且在造影剂注射之后的第一时间段之后以第二强度分布产生血管横截面的第二磁共振图像，以及血管横截面的第三磁共振图像 在注射造影剂之后的第二持续时间之后产生具有第三强度分布，并且根据磁共振图像的各自的强度分布对斑块进行分类。
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公开(公告)号：US07328056B2
公开(公告)日：2008-02-05
申请号：US10625392
申请日：2003-07-23
申请人： Stefan Assmann , Oliver Schreck , Paul Finn , Stephanie Shors
发明人： Stefan Assmann , Oliver Schreck , Paul Finn , Stephanie Shors
IPC分类号： A61B5/05
CPC分类号： A61B5/7264 , A61B5/055
摘要： In a method and apparatus for classifying plaque in a blood vessel of a living subject using magnetic resonance imaging, a first magnetic resonance image is produced with a first intensity distribution of a cross-section of a vessel containing plaque, and a contrast agent is injected into the vascular system and a second magnetic resonance image of the cross-section of the vessel is produced with a second intensity distribution after a first time duration following the contrast agent injection, and a third magnetic resonance image of the cross-section of the vessel is produced with a third intensity distribution after a second time duration following the injection of the contrast agent, and the plaque is classified dependent on the respective intensity distributions of the magnetic resonance images.
摘要翻译： 在使用磁共振成像对生物体的血管分类斑块的方法和装置中，以包含斑块的血管的横截面的第一强度分布产生第一磁共振图像，并注射造影剂 进入血管系统，并且在造影剂注射之后的第一个持续时间之后以第二强度分布产生血管横截面的第二磁共振图像，以及血管横截面的第三磁共振图像 在注射造影剂之后的第二持续时间之后产生具有第三强度分布，并且根据磁共振图像的各自的强度分布对斑块进行分类。
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公开(公告)号：US07336072B2
公开(公告)日：2008-02-26
申请号：US11361443
申请日：2006-02-24
申请人： Stefan Assmann , Oliver Schreck
发明人： Stefan Assmann , Oliver Schreck
IPC分类号： G01V3/00
CPC分类号： G01R33/563
摘要： In a method for representation of flow in a magnetic resonance image, a first magnetic resonance image of an examination subject is acquired, wherein the flow occurring in the examination subject is not compensated in a first spatial direction; a second magnetic resonance image is acquired, wherein the flow occurring in the first spatial direction is compensated, the phase of the magnetization in each of the first and the second magnetic resonance images is calculated of the phase difference between the first phase image and the second phase image, which is calculated is a measure for the flow along the first spatial direction. A third magnetic resonance image is acquired, wherein the flow in a second spatial direction perpendicular to the first spatial direction is not compensated, and a fourth magnetic resonance image is acquired, wherein the flow occurring in the second spatial direction is compensated. The phase in each of the third and fourth magnetic resonance images is calculated and the phase difference between the third and fourth phase images is calculated, which is a measure of the flow along the second spatial direction. A resulting flow velocity vector is calculated by vectorial addition of both flow components, and is visually represented.
摘要翻译： 在用于表示磁共振图像中的流动的方法中，获取检查对象的第一磁共振图像，其中在第一空间方向上不补偿在检查对象中发生的流动; 获取第二磁共振图像，其中补偿在第一空间方向上发生的流动，计算第一和第二磁共振图像中的每一个中的磁化相位，其中第一相位图像和第二相位图像之间的相位差 计算的相位图像是沿着第一空间方向的流量的度量。 获取第三磁共振图像，其中不补偿与第一空间方向垂直的第二空间方向上的流动，并且获取第四磁共振图像，其中补偿在第二空间方向上发生的流动。 计算每个第三和第四磁共振图像中的相位，并且计算第三和第四相位图像之间的相位差，其是沿着第二空间方向的流量的量度。 通过两个流分量的矢量加法来计算所得到的流速矢量，并且被视觉地表示。
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公开(公告)号：US20060241389A1
公开(公告)日：2006-10-26
申请号：US11361443
申请日：2006-02-24
申请人： Stefan Assmann , Oliver Schreck
发明人： Stefan Assmann , Oliver Schreck
IPC分类号： A61B5/05
CPC分类号： G01R33/563
摘要： In a method for representation of flow in a magnetic resonance image, a first magnetic resonance image of an examination subject is acquired, wherein the flow occurring in the examination subject is not compensated in a first spatial direction; a second magnetic resonance image is acquired, wherein the flow occurring in the first spatial direction is compensated, the phase of the magnetization in each of the first and the second magnetic resonance images is calculated of the phase difference between the first phase image and the second phase image, which is calculated is a measure for the flow along the first spatial direction. A third magnetic resonance image is acquired, wherein the flow in a second spatial direction perpendicular to the first spatial direction is not compensated, and a fourth magnetic resonance image is acquired, wherein the flow occurring in the second spatial direction is compensated. The phase in each of the third and fourth magnetic resonance images is calculated and the phase difference between the third and fourth phase images is calculated, which is a measure of the flow along the second spatial direction. A resulting flow velocity vector is calculated by vectorial addition of both flow components, and is visually represented.
摘要翻译： 在用于表示磁共振图像中的流动的方法中，获取检查对象的第一磁共振图像，其中在第一空间方向上不补偿在检查对象中发生的流动; 获取第二磁共振图像，其中补偿在第一空间方向上发生的流动，计算第一和第二磁共振图像中的每一个中的磁化相位，其中第一相位图像和第二相位图像之间的相位差 计算的相位图像是沿着第一空间方向的流量的度量。 获取第三磁共振图像，其中不补偿与第一空间方向垂直的第二空间方向上的流动，并且获取第四磁共振图像，其中补偿在第二空间方向上发生的流动。 计算每个第三和第四磁共振图像中的相位，并且计算第三和第四相位图像之间的相位差，其是沿着第二空间方向的流量的量度。 通过两个流分量的矢量加法来计算所得到的流速矢量，并且被视觉地表示。
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公开(公告)号：US20050088177A1
公开(公告)日：2005-04-28
申请号：US10691405
申请日：2003-10-22
申请人： Oliver Schreck , Mike Muller , Martin Harder , Hans-Peter Hollenbach , Franz Schmitt , Ines Nimsky , Anders Dale , Andre Van Der Kouwe
发明人： Oliver Schreck , Mike Muller , Martin Harder , Hans-Peter Hollenbach , Franz Schmitt , Ines Nimsky , Anders Dale , Andre Van Der Kouwe
摘要： In a method and computer program product for operating a tomographic imaging apparatus, a standard measurement protocol is generated by displaying a planning representation of a standard object, defining a spatial position of a standard imaging area in the planning representation, and storing, as the standard measurement protocol for the standard object, a reference to the standard object and parameters of the standard imaging area. Such a standard measurement protocol can then be used in the slice position planning for an actual tomographic measurement, by obtaining data representing features of an examination object, corresponding to the standard object, determining a geometrical relation of the features of the examination object to features of the standard object, and generating an object-specific measurement protocol wherein the imaging area is positioned relative to the examination object by modification of the standard measurement protocol.
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公开(公告)号：US08519712B2
公开(公告)日：2013-08-27
申请号：US12980553
申请日：2010-12-29
申请人： Jin Jun Chen , Oliver Schreck
发明人： Jin Jun Chen , Oliver Schreck
IPC分类号： G01R33/44
CPC分类号： G01R33/3875 , G01R33/58
摘要： In a method and apparatus for correcting the uniformity of a magnetic field, an active shim shell is placed in the magnetic field, a magnetic resonance image of the active shim shell obtained, and the placement position of the active shim shell is determined by analyzing the magnetic resonance image. The value of a shim current in the active shim shell is determined so as to meet the uniformity requirements of the magnetic field according to the placement position. The value of the shim current in said active shim shell is set to the determined value of the shim current.
摘要翻译： 在用于校正磁场均匀性的方法和装置中，将有源垫片放置在磁场中，获得活动垫片壳的磁共振图像，并且通过分析活动垫片壳体的放置位置来确定活动垫片壳体的放置位置 磁共振图像。 确定活动垫片中的垫片电流的值，以便根据放置位置满足磁场的均匀性要求。 所述活动垫片外壳中的垫片电流值被设置为确定的垫片电流值。
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公开(公告)号：US20120043964A1
公开(公告)日：2012-02-23
申请号：US13116155
申请日：2011-05-26
申请人： Oliver Schreck , Rui Zhang , Shi Gang Zhang , Hai Yan Zhou
发明人： Oliver Schreck , Rui Zhang , Shi Gang Zhang , Hai Yan Zhou
IPC分类号： G01R33/48
CPC分类号： G01R33/543 , A61B5/055 , G01R33/50 , G01R33/546 , G01R33/58
摘要： A method for simulating magnetic resonance signals is proposed. A lattice array where each point in the array has several magnetic resonance sensitive particles is provided. Statistic property of each point is set. A raw magnetic resonance imaging data is calculated based on statistic property of each point and a magnetic resonance imaging sequence to be applied. A system for simulating magnetic resonance signals is further proposed. By considering statistic property of each point, it can distinguish every part of the object to be scanned and really reflect the structure of object without using a real magnetic resonance imaging device. It saves time and costs for avoiding several scanning by the real a magnetic resonance imaging device.
摘要翻译： 提出了一种模拟磁共振信号的方法。 提供阵列中每个点具有几个磁共振敏感粒子的晶格阵列。 设置每个点的统计属性。 基于每个点的统计特性和要应用的磁共振成像序列计算原始磁共振成像数据。 进一步提出了一种用于模拟磁共振信号的系统。 通过考虑每个点的统计特性，它可以区分待扫描对象的每个部分，并且真正反映物体的结构，而不使用真正的磁共振成像装置。 它可以节省时间和成本，避免真正的磁共振成像设备进行多次扫描。
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公开(公告)号：US07327138B2
公开(公告)日：2008-02-05
申请号：US11222876
申请日：2005-09-09
申请人： Robert Krieg , Ralf Ladebeck , Oliver Schreck
发明人： Robert Krieg , Ralf Ladebeck , Oliver Schreck
IPC分类号： G01V3/00
CPC分类号： A61B5/055 , A61B6/03 , A61B6/5247 , G06F19/00
摘要： A nuclear-medical image is generated from a nuclear-medical data set that can be acquired with a dual modality tomography apparatus, which has both a scanner for acquisition of magnetic resonance images and a scanner for acquisition of nuclear-medical data sets within a common acquisition volume. A nuclear-medical data set and an MR image are thereby acquired, and a nuclear-medical magnetic resonance atlas is provided with a reference MR data set of the region of a reference patient to be imaged and a corresponding correction data set. A transformation that maps the reference MR data set to the MR image is generated and applied to the correction data set to generate a transformed correction data set that is registered with the nuclear-medical data set. The corrected nuclear-medical image is subsequently calculated from the transformed correction data set and the nuclear-medical data set.
摘要翻译： 核医学图像由可以用双模态断层摄影装置获取的核医学数据集产生，该双模态断层摄影装置既具有用于获取磁共振图像的扫描仪和用于获取共同体内的核医学数据集的扫描仪 收购量。 由此获取核医学数据集和MR图像，并且向核医学磁共振图谱提供要成像的参考患者的区域的参考MR数据集和相应的校正数据集。 产生将参考MR数据集映射到MR图像的变换，并将其应用于校正数据集，以生成被登记在核医学数据集中的经变换的校正数据集。 随后从经变换的校正数据集和核医学数据集计算校正的核医学图像。
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