公开(公告)号：US08896307B2

公开(公告)日：2014-11-25

申请号：US13422434

申请日：2012-03-16

Applicant: Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

Inventor： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

IPC: G01R33/44 ,  G01R33/565 ,  G01R33/48

CPC classification number: G01R33/481 ,  G01R33/56563 ,  G01R33/56572

Abstract: According to an embodiment of a method, a first readout gradient field is determined in such a way that a distortion caused by a non-linearity of the first readout gradient field and a distortion caused by a B0 field inhomogeneity are essentially cancelled at a first location of a field of view of the magnetic resonance facility. Moreover, a second readout gradient field is determined in such a way that a distortion caused by a non-linearity of the second readout gradient field and a distortion caused by a B0 field inhomogeneity are essentially cancelled at a different second location of the field of view. Finally, a multiecho sequence is performed, wherein first magnetic resonance data is captured using the first readout gradient field after a 180° pulse and second magnetic resonance data is captured using the second readout gradient field after a further 180° pulse.

Abstract translation: 根据方法的实施例，第一读出梯度场被确定为使得由第一读出梯度场的非线性引起的失真和由B0场不均匀性引起的失真在第一位置处被基本上消除 的磁共振设备的视场。 此外，以这样的方式确定第二读出梯度场，使得由第二读出梯度场的非线性引起的失真和由B0场不均匀性引起的失真在视场的不同的第二位置基本上消除 。 最后，执行多电路序列，其中在180°脉冲之后使用第一读出梯度场捕获第一磁共振数据，并且在进一步180°脉冲之后使用第二读出梯度场捕获第二磁共振数据。

公开(公告)号：US08848997B2

公开(公告)日：2014-09-30

申请号：US12498535

申请日：2009-07-07

Applicant: Matthias Fenchel ,  Andreas Schilling ,  Stefan Thesen

Inventor： Matthias Fenchel ,  Andreas Schilling ,  Stefan Thesen

IPC: G06K9/00 ,  G06T7/00 ,  A61B5/055 ,  G06F19/00 ,  G01R33/54

CPC classification number: A61B5/055 ,  G01R33/54 ,  G01R33/543 ,  G06F19/00 ,  G06F19/321 ,  G06T7/0012 ,  G06T7/11 ,  G06T7/143 ,  G06T7/149 ,  G06T7/32 ,  G06T7/35 ,  G06T2207/10088 ,  G06T2207/20081 ,  G06T2207/20128 ,  G06T2207/30004 ,  G16H40/63

Abstract: In a medical image acquisition, and operating method, before acquiring a current planning image data set from a subject, a statistical atlas is generated from multiple planning image data sets using a specific measurement protocol, as a statistical compilation including an average image data set electronically associated with association information that identifies different anatomical entities represented by the statistical compilation. After the current planning image data set is acquired, the stored average image data set is transformed into the current planning image data set, with the association information being accurately associated with the current planning image data set. A diagnostic image acquisition of the subject is then controlled using the association information that is now associated with the current planning image data set.

Abstract translation: 在医学图像采集和操作方法中，在从对象获取当前规划图像数据集之前，使用特定测量协议从多个规划图像数据集生成统计图谱，作为包括电子平均图像数据集的统计汇编 与识别由统计汇编表示的不同解剖实体的关联信息相关联。 在获取当前规划图像数据集之后，将存储的平均图像数据集变换为当前规划图像数据集，其中关联信息与当前规划图像数据集精确地相关联。 然后使用现在与当前规划图像数据集相关联的关联信息来控制对象的诊断图像采集。

公开(公告)号：US08814572B2

公开(公告)日：2014-08-26

申请号：US13206579

申请日：2011-08-10

Applicant: Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

Inventor： Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

IPC: G09B23/28

CPC classification number: G01R33/58 ,  G01R33/481

Abstract: A phantom, particularly for use in MR- or PET-based imaging methods, includes a hollow base body that delimits an interior volume, wherein the interior volume is subdivided into at least two volume portions by at least one separation element, and wherein the separation element or a section thereof consists of foam.

Abstract translation: 特别是用于基于MR或PET的成像方法的体模包括限定内部体积的中空基体，其中内部体积被至少一个分离元件细分成至少两个体积部分，并且其中分离 元件或其一部分由泡沫构成。

公开(公告)号：US08810243B2

公开(公告)日：2014-08-19

申请号：US13226022

申请日：2011-09-06

Applicant: Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

Inventor： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

IPC: G01V3/00

CPC classification number: G01R33/56563 ,  G01R33/445 ,  G01R33/481 ,  G01R33/56572

Abstract: A method is disclosed for imaging a portion of an examination object in a magnetic resonance scanner. The portion is arranged at the edge of a field of view of the magnetic resonance scanner. During at least one embodiment of the method, a gradient field is produced such that a nonlinearity in the gradient field and a B0-field inhomogeneity cancel at a predetermined point at the edge of the field of view. Magnetic resonance data, which contains the predetermined point at the edge of the field of view, is acquired with the aid of the gradient field. An image of the portion of the examination object at the predetermined point is determined from the magnetic resonance data.

Abstract translation: 公开了一种用于对磁共振扫描仪中的检查对象的一部分进行成像的方法。 该部分布置在磁共振扫描仪的视野的边缘。 在该方法的至少一个实施例中，产生梯度场，使得梯度场中的非线性和B0场不均匀性在视场边缘处的预定点处消除。 借助于梯度场获取包含视场边缘处的预定点的磁共振数据。 根据磁共振数据确定检查对象在预定点处的部分的图像。

公开(公告)号：US20120235680A1

公开(公告)日：2012-09-20

申请号：US13422434

申请日：2012-03-16

Applicant: Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

Inventor： Jan Ole Blumhagen ,  Matthias Fenchel ,  Ralf Ladebeck

IPC: G01R33/44

CPC classification number: G01R33/481 ,  G01R33/56563 ,  G01R33/56572

Abstract: According to an embodiment of a method, a first readout gradient field is determined in such a way that a distortion caused by a non-linearity of the first readout gradient field and a distortion caused by a B0 field inhomogeneity are essentially cancelled at a first location of a field of view of the magnetic resonance facility. Moreover, a second readout gradient field is determined in such a way that a distortion caused by a non-linearity of the second readout gradient field and a distortion caused by a B0 field inhomogeneity are essentially cancelled at a different second location of the field of view. Finally, a multiecho sequence is performed, wherein first magnetic resonance data is captured using the first readout gradient field after a 180° pulse and second magnetic resonance data is captured using the second readout gradient field after a further 180° pulse.

Abstract translation: 根据方法的实施例，第一读出梯度场被确定为使得由第一读出梯度场的非线性引起的失真和由B0场不均匀性引起的失真在第一位置处被基本上消除 的磁共振设备的视场。 此外，以这样的方式确定第二读出梯度场，使得由第二读出梯度场的非线性引起的失真和由B0场不均匀性引起的失真在视场的不同的第二位置基本上消除 。 最后，执行多电路序列，其中在180°脉冲之后使用第一读出梯度场捕获第一磁共振数据，并且在进一步180°脉冲之后使用第二读出梯度场捕获第二磁共振数据。

公开(公告)号：US20120040322A1

公开(公告)日：2012-02-16

申请号：US13206579

申请日：2011-08-10

Applicant: Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

Inventor： Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

IPC: G09B23/28

CPC classification number: G01R33/58 ,  G01R33/481

Abstract: A phantom, particularly for use in MR- or PET-based imaging methods, includes a hollow base body that delimits an interior volume, wherein the interior volume is subdivided into at least two volume portions by at least one separation element, and wherein the separation element or a section thereof consists of foam.

Abstract translation: 特别是用于基于MR或PET的成像方法的体模包括限定内部体积的中空基体，其中内部体积被至少一个分离元件细分成至少两个体积部分，并且其中分离 元件或其一部分由泡沫构成。

公开(公告)号：US20110304335A1

公开(公告)日：2011-12-15

申请号：US13156464

申请日：2011-06-09

Applicant: Matthias Fenchel

Inventor： Matthias Fenchel

IPC: G01R33/44

CPC classification number: G01R33/481 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/5258 ,  G01T1/1603

Abstract: A method is disclosed for determining radiation attenuation by a local coil in a tomography scanner of a magnetic resonance-positron emission tomography system. In at least one embodiment of the method, arrangement-dependent radiation attenuation, which depends on a coil-arrangement parameter record, is set for the local coil. Raw radiation data of an examination object is acquired with the aid of the MR-PET system and a plurality of images of the examination object are determined from the raw radiation data. In the process, each image is determined with a different coil-arrangement parameter record, taking into account the arrangement-dependent radiation attenuation. Each image is assigned a cost value, which corresponds to a measure of artifacts in the image. The radiation attenuation by the local coil is determined from the arrangement-dependent radiation attenuation and the coil-arrangement parameter record, which is associated with the optimized cost value, by determining an optimized cost value.

Abstract translation: 公开了一种用于通过磁共振 - 正电子发射断层摄影系统的断层摄影扫描仪中的局部线圈确定辐射衰减的方法。 在该方法的至少一个实施例中，对于局部线圈设置取决于线圈布置参数记录的依赖于排列的放射线衰减。 借助于MR-PET系统获取检查对象的原始辐射数据，并根据原始辐射数据确定检查对象的多个图像。 在该过程中，考虑到排列依赖的辐射衰减，每个图像由不同的线圈排列参数记录确定。 分配每个图像的成本值，其对应于图像中的伪像的度量。 通过确定优化的成本值，根据与排列相关的辐射衰减和与优化成本值相关联的线圈布置参数记录来确定局部线圈的辐射衰减。

公开(公告)号：US20110303835A1

公开(公告)日：2011-12-15

申请号：US13158727

申请日：2011-06-13

Applicant: Matthias Fenchel

Inventor： Matthias Fenchel

IPC: G01D18/00 ,  G01T1/164

CPC classification number: G01T1/2985 ,  A61B6/037

Abstract: A method is disclosed for determining radiation attenuation by an examination object in a positron emission tomography scanner. In at least one embodiment of the method, an initial segmentation of the examination object is fixed, wherein an attenuation coefficient is assigned to each segment of the segmentation. Furthermore, raw radiation data about the examination object arranged in the positron emission tomography scanner is acquired, and a correction factor is automatically determined for each pixel with the aid of an optimization method, in which the probability of the acquired raw radiation data is maximized taking into account the segmentation and the attenuation coefficients assigned to the segments. A statistical parameter of the correction factors is then determined for each segment and the segmentation is corrected by subdividing a segment as a function of the statistical parameter determined for the segment. Finally, a segment correction factor is determined for each segment from the correction factors assigned to the segment and the attenuation coefficients assigned to the segments are corrected as a function of the segment correction factors.

Abstract translation: 公开了一种用于通过正电子发射断层摄影扫描仪中的检查对象来确定辐射衰减的方法。 在该方法的至少一个实施例中，检查对象的初始分割是固定的，其中衰减系数被分配给分割的每个分段。 此外，获取关于布置在正电子发射断层摄影扫描仪中的检查对象的原始辐射数据，并且借助于优化方法自动确定每个像素的校正因子，其中所获取的原始辐射数据的概率最大化 考虑分配到分段的衰减系数。 然后针对每个片段确定校正因子的统计参数，并且通过将片段细分为为片段确定的统计参数的函数来校正分割。 最后，根据分配给该段的校正因子为每个段确定段校正因子，并且分配给段的衰减系数作为段校正因子的函数被校正。

公开(公告)号：US20070242865A1

公开(公告)日：2007-10-18

申请号：US11736674

申请日：2007-04-18

Applicant: Matthias Fenchel ,  Andreas Schilling ,  Stefan Thesen

Inventor： Matthias Fenchel ,  Andreas Schilling ,  Stefan Thesen

IPC: G06K9/00

CPC classification number: G06K9/00 ,  G06F19/00 ,  G06F19/321 ,  G06K9/20 ,  G06K2209/051

Abstract: In a method for controlling the acquisition and/or evaluation operation of image data in medical examinations, using a statistical model of the target volume based on data about real anatomy, spatial information (in particular position, orientation and shape) of the target volume are automatically determined in a previously-acquired planning image data set wholly or partially showing a target volume, and the acquisition and/or evaluation operation is controlled using the spatial information.

Abstract translation: 在用于控制医学检查中的图像数据的获取和/或评估操作的方法中，使用基于关于真实解剖结构的数据的目标体积的统计模型，目标体积的空间信息（特别是位置，取向和形状）是 在先前获得的完全或部分地示出目标体积的计划图像数据集中自动确定，并且使用空间信息来控制获取和/或评估操作。