公开(公告)号：US20060258934A1

公开(公告)日：2006-11-16

申请号：US10554307

申请日：2004-04-13

申请人： Michael Zenge ,  Steffen Weiss ,  Tobias Schaeffter ,  Ralph Sinkus

发明人： Michael Zenge ,  Steffen Weiss ,  Tobias Schaeffter ,  Ralph Sinkus

IPC分类号： A61B5/05

CPC分类号： G01R33/286

摘要： The invention relates to a magnetic resonance method for locating interventional devices, in particular in vivo, in which the interventional device bears a marking which in magnetic resonance images influences the measured signals or generates its own measured signals, where the measured signals are processed by means of a one-dimensional signal processing method in order to suppress noise and artefacts. This may in particular be the maximum entropy method, which can be further expanded by the use of model functions. These model functions are subtracted from the measured signals during the iterative method in order in this way to additionally improve the elimination of artefacts. As an alternative to the use of the maximum entropy method, the use of filters, in particular Wiener filters or bandpass filters, is also possible.

摘要翻译： 本发明涉及用于定位介入装置，特别是体内的磁共振方法，其中介入装置具有在磁共振图像中影响测量信号或产生其自身测量信号的标记，其中测量信号通过装置 的一维信号处理方法，以便抑制噪声和伪影。 这可能特别是最大熵方法，可以通过使用模型函数进一步扩展。 在迭代方法中，从测量信号中减去这些模型函数，以此方式另外提高了人为因素的消除。 作为使用最大熵方法的替代方案，也可以使用滤波器，特别是维纳滤波器或带通滤波器。

公开(公告)号：US09097780B2

公开(公告)日：2015-08-04

申请号：US14054003

申请日：2013-10-15

申请人： Jun Liu ,  Zhili Yang ,  Mariappan S. Nadar ,  Nirmal Janardhanan ,  Michael Zenge ,  Edgar Mueller ,  Qiu Wang ,  Axel Loewe

发明人： Jun Liu ,  Zhili Yang ,  Mariappan S. Nadar ,  Nirmal Janardhanan ,  Michael Zenge ,  Edgar Mueller ,  Qiu Wang ,  Axel Loewe

IPC分类号： G06K9/00 ,  G01R33/561

CPC分类号： G01R33/5611

摘要： A computer-implemented method for reconstruction of a magnetic resonance image includes acquiring a first incomplete k-space data set comprising a plurality of first k-space lines spaced according to an acceleration factor and one or more calibration lines. A parallel imaging reconstruction technique is applied to the first incomplete k-space data to determine a plurality of second k-space lines not included in the first incomplete k-space data set, thereby yielding a second incomplete k-space data set. Then, the parallel imaging reconstruction technique is applied to the second incomplete k-space data to determine a plurality of third k-space lines not included in the second incomplete k-space data, thereby yielding a complete k-space data set.

摘要翻译： 用于重建磁共振图像的计算机实现的方法包括获取包括根据加速因子和一个或多个校准线间隔开的多个第一k空间线的第一不完整k空间数据集。 将并行成像重建技术应用于第一不完整k空间数据以确定未包括在第一不完整k空间数据集中的多个第二k空间线，从而产生第二不完整k空间数据集。 然后，将并行成像重构技术应用于第二不完整k空间数据，以确定不包括在第二不完整k空间数据中的多个第三k空间线，从而产生完整的k空间数据集。

公开(公告)号：US20130121550A1

公开(公告)日：2013-05-16

申请号：US13284143

申请日：2011-10-28

申请人： Ti-chiun Chang ,  Mariappan S. Nadar ,  Jens Gühring ,  Michael Zenge ,  Kai Tobias Block ,  Peter Schmitt ,  Edgar Mueller

发明人： Ti-chiun Chang ,  Mariappan S. Nadar ,  Jens Gühring ,  Michael Zenge ,  Kai Tobias Block ,  Peter Schmitt ,  Edgar Mueller

IPC分类号： G06T11/00 ,  A61B5/055

CPC分类号： G06T11/003 ,  A61B5/055 ,  G01R33/561 ,  G01R33/5635 ,  G01R33/56545

摘要： A reconstructed image is rendered of a patient by a processor from a set of undersampled MRI data by first subtracting two repetitions of the acquired data in k-space to create a third dataset. The processor reconstructs the image by minimizing an objective function under a constraint related to the third dataset, wherein the objective function includes applying a Karhunen-Loeve Transform (KLT) to a temporal dimension of data. The objective function under the constraint is expressed as arg minf{∥φ(f)∥1 subject to ∥Af−y∥2≦ε}. The reconstructed image is an angiogram which may be a 4D angiogram. The angiogram is used to diagnose a vascular disease.

摘要翻译： 通过首先在k空间中减去所获取的数据的两次重复以创建第三数据集，由处理器从一组欠采样的MRI数据中呈现患者的重建图像。 处理器通过在与第三数据集相关的约束下最小化目标函数来重建图像，其中目标函数包括将Karhunen-Loeve变换（KLT）应用于数据的时间维度。 约束下的目标函数表示为arg minf {∥phi（f）‖1，受∥Af-y‖2@ epsilon}的限制。 重建的图像是可以是4D血管造影的血管造影。 血管造影用于诊断血管疾病。

公开(公告)号：US20120112751A1

公开(公告)日：2012-05-10

申请号：US13289309

申请日：2011-11-04

申请人： Arne Littmann ,  Davide Piccini ,  Michael Zenge

发明人： Arne Littmann ,  Davide Piccini ,  Michael Zenge

IPC分类号： G01R33/44

CPC分类号： G01R33/4838 ,  A61B5/055 ,  G01R33/5608 ,  G01R33/5611 ,  G01R33/56545

摘要： In a method and magnetic resonance (MR) apparatus for combining MR signals that were acquired with different acquisition coils from a region of an examination subject at least two MR signals that are based on MR signals acquired with at least two different acquisition coils are provided to a processor. Due to the spatially differing arrangement of the respective acquisition coils, the at least two MR signals image the region of the examination subject with different sensitivity profiles. The provided MR signals are combined, such that unwanted MR signal portions are suppressed, to form a combined MR signal with the suppression of unwanted MR signal portions being implemented by MR signal portions that were acquired with an acquisition coil that detects the unwanted MR signal portions with increased sensitivity in comparison to other acquisition coils being weighted less in the combined MR signal than other MR signal portions.

摘要翻译： 在用于组合从检查对象的区域中获取的不同采集线圈的MR信号的方法和磁共振（MR）装置中，至少两个MR信号基于用至少两个不同采集线圈获取的MR信号被提供给 一个处理器 由于各个采集线圈的空间上不同的布置，所述至少两个MR信号以不同的灵敏度分布图像检查对象的区域。 所提供的MR信号被组合，使得不需要的MR信号部分被抑制以形成组合的MR信号，其中抑制不期望的MR信号部分由MR信号部分实现，MR信号部分是用检测不需要的MR信号部分的采集线圈 与其他采集线圈相比，在组合MR信号中比其他MR信号部分加权较小的灵敏度增加。

公开(公告)号：US20100128952A1

公开(公告)日：2010-05-27

申请号：US12624478

申请日：2009-11-24

申请人： Peter Schmitt ,  Michael Zenge

发明人： Peter Schmitt ,  Michael Zenge

IPC分类号： G06K9/00

CPC分类号： A61B6/03 ,  A61B5/02007 ,  A61B5/055 ,  G01R33/4835 ,  G01R33/4838 ,  G01R33/5601 ,  G01R33/5635 ,  G06T5/008 ,  G06T2207/10088 ,  G06T2207/30101

摘要： In a method and magnetic resonance (MR) apparatus for correction of artifacts in time-of-flight (TOF) MR angiography, MR signals are acquired in a target volume with the TOF MR angiography technique to generate multiple MR angiography images, pixels with background signal are identified in the angiography images by separation of these pixels from noise and vessel pixels, a signal profile of the pixels with background signal is determined across the target volume, and the MR signal of a predetermined set of pixels of the target volume is normalized with the signal profile of the pixels with background signal.

摘要翻译： 在用于校正飞行时间（TOF）MR血管造影中伪像的方法和磁共振（MR）装置中，使用TOF MR血管造影技术在目标体积中获取MR信号以产生多个MR血管造影图像，具有背景的像素 通过将这些像素与噪声和血管像素分离，在血管造影图像中识别信号，在目标体积上确定具有背景信号的像素的信号分布，并且将目标体积的预定像素集合的MR信号归一化 具有背景信号的像素的信号分布。

公开(公告)号：US20100045292A1

公开(公告)日：2010-02-25

申请号：US12545917

申请日：2009-08-24

申请人： Michael Zenge

发明人： Michael Zenge

IPC分类号： G01R33/44

CPC分类号： G01R33/4826 ,  A61B5/02007 ,  A61B5/055 ,  A61B5/7207 ,  A61B5/7285 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/5673 ,  G01R33/5676

摘要： In a magnetic resonance apparatus and method for generation of a magnetic resonance angiogram of a subphrenic vessel structure, a subject containing the subphrenic vessel structure is positioned in an imaging volume of a magnetic resonance apparatus, and MR measurement data are acquired using a radial k-space scanning scheme. An image of the vessel structure is reconstructed from the measurement data. Information about movement of the vessel structure to be examined is determined from the acquired measurement data and a movement correction is implemented in the reconstruction of the image using the extracted information.

摘要翻译： 在用于产生膈下血管结构的磁共振血管造影图的磁共振装置和方法中，将包含膈下结构的受试者定位在磁共振装置的成像体积中，并且使用径向k- 空间扫描方案。 从测量数据重建血管结构的图像。 从获取的测量数据确定关于要检查的血管结构的移动的信息，并且使用提取的信息在图像的重建中实现移动校正。

公开(公告)号：US09274196B2

公开(公告)日：2016-03-01

申请号：US13677594

申请日：2012-11-15

申请人： Michael Zenge

发明人： Michael Zenge

IPC分类号： G01V3/00 ,  G01R33/56 ,  G01R33/563 ,  G01R33/567 ,  G01R33/48

CPC分类号： G01R33/56 ,  G01R33/4826 ,  G01R33/5635 ,  G01R33/5676

摘要： In the generation of MR angiography images of a predetermined three-dimensional volume segment of a living examination subject using means a magnetic resonance system, MR data in the volume segment are acquired by radial acquisition of k-space. The MR data are analyzed in order to subdivide the MR data into groups, with each group including only the MR data that correspond to a specific heart beat phase of the heat of the examination subject. MR angiography images are generated based only on the MR data of one of these groups.

摘要翻译： 在通过使用磁共振系统的生物检查对象的预定的三维体积段的MR血管造影图像的生成中，通过k空间的径向获取来获取体积段中的MR数据。 分析MR数据以将MR数据分组成组，每组包括仅与检查对象的热的特定心跳相位相对应的MR数据。 仅基于这些组中的一个的MR数据生成MR血管造影图像。

公开(公告)号：US08867756B2

公开(公告)日：2014-10-21

申请号：US12909905

申请日：2010-10-22

申请人： Michael Zenge

发明人： Michael Zenge

IPC分类号： A61B7/04 ,  A61B7/00 ,  G01R33/28 ,  G01R33/567 ,  A61B5/00 ,  A61B5/055

CPC分类号： G01R33/283 ,  A61B5/055 ,  A61B5/7207 ,  A61B5/7285 ,  A61B7/04 ,  G01R33/5673

摘要： An auscultation apparatus including an optical microphone is proposed. Optical microphones can reliably acquire sounds of the most disparate frequencies even in an environment permeated by electromagnetic fields, without influencing said fields. Such an optical microphone of an auscultation apparatus can be disposed inside a medical examination and diagnostic device during operation. Given a suitable arrangement, both the heart sounds and the respiratory sounds of a patient can be recorded and monitored already with just one optical microphone.

摘要翻译： 提出了包括光学麦克风的听诊装置。 即使在电磁场中渗透的环境中，光学麦克风也可以可靠地获取最不均匀的频率的声音，而不影响所述场。 这种听诊装置的光学麦克风可以在操作期间设置在医疗检查和诊断装置的内部。 给定合适的布置，可以仅使用一个光学麦克风来记录和监测患者的心脏声音和呼吸音。

公开(公告)号：US20140133724A1

公开(公告)日：2014-05-15

申请号：US14054003

申请日：2013-10-15

申请人： Jun Liu ,  Zhili Yang ,  Mariappan S. Nadar ,  Nirmal Janardhanan ,  Michael Zenge ,  Edgar Mueller ,  Qiu Wang ,  Axel Loewe

发明人： Jun Liu ,  Zhili Yang ,  Mariappan S. Nadar ,  Nirmal Janardhanan ,  Michael Zenge ,  Edgar Mueller ,  Qiu Wang ,  Axel Loewe

IPC分类号： G06T11/00

CPC分类号： G01R33/5611

摘要： A computer-implemented method for reconstruction of a magnetic resonance image includes acquiring a first incomplete k-space data set comprising a plurality of first k-space lines spaced according to an acceleration factor and one or more calibration lines. A parallel imaging reconstruction technique is applied to the first incomplete k-space data to determine a plurality of second k-space lines not included in the first incomplete k-space data set, thereby yielding a second incomplete k-space data set. Then, the parallel imaging reconstruction technique is applied to the second incomplete k-space data to determine a plurality of third k-space lines not included in the second incomplete k-space data, thereby yielding a complete k-space data set.

摘要翻译： 用于重建磁共振图像的计算机实现的方法包括获取包括根据加速因子和一个或多个校准线间隔开的多个第一k空间线的第一不完整k空间数据集。 将并行成像重建技术应用于第一不完整k空间数据以确定未包括在第一不完整k空间数据集中的多个第二k空间线，从而产生第二不完整k空间数据集。 然后，将并行成像重构技术应用于第二不完整k空间数据，以确定不包括在第二不完整k空间数据中的多个第三k空间线，从而产生完整的k空间数据集。

公开(公告)号：US08675942B2

公开(公告)日：2014-03-18

申请号：US13280994

申请日：2011-10-25

申请人： Ti-chiun Chang ,  Mariappan S. Nadar ,  Jens Gühring ,  Michael Zenge ,  Kai Tobias Block ,  Peter Speier ,  Edgar Müller ,  Michael S. Hansen

发明人： Ti-chiun Chang ,  Mariappan S. Nadar ,  Jens Gühring ,  Michael Zenge ,  Kai Tobias Block ,  Peter Speier ,  Edgar Müller ,  Michael S. Hansen

IPC分类号： G06K9/00

CPC分类号： G01R33/4824 ,  G01R33/5608 ,  G01R33/56545

摘要： A reconstructed image is rendered from a set of MRI data by first estimating an image with an area which does not contain artifacts or has an artifact with a relative small magnitude. Corresponding data elements in the estimated image and a trial image are processed, for instance by multiplication, to generate an intermediate data set. The intermediate data set is transformed and minimized iteratively to generate a reconstructed image that is free or substantially free of artifacts. In one embodiment a Karhunen-Loeve Transform (KLT) is used. A sparsifying transformation may be applied to generate the reconstructed image. The sparsifying transformation may be also not be applied.

摘要翻译： 通过首先用不包含伪像的区域估计图像或具有相对小的幅度的伪像，从一组MRI数据呈现重建的图像。 例如通过乘法处理估计图像和试验图像中的相应数据元素以生成中间数据集。 中间数据集被迭代地变换和最小化以产生自由或基本上没有伪像的重建图像。 在一个实施例中，使用Karhunen-Loeve变换（KLT）。 可以应用稀疏变换来生成重建图像。 稀释变形也可能不适用。