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    Non-Contrast-Enhanced 4D MRA Using Compressed Sensing Reconstruction
    1.
    发明申请
    Non-Contrast-Enhanced 4D MRA Using Compressed Sensing Reconstruction 有权
    使用压缩感知重建的非对比度增强型4D MRA

    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。

    CORRECTION OF ARTIFACTS IN TIME-OF-FLIGHT MR ANGIOGRAPHY
    2.
    发明申请
    CORRECTION OF ARTIFACTS IN TIME-OF-FLIGHT MR ANGIOGRAPHY 有权
    在时间飞行中的角质层矫正

    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。

    Correction of artifacts in time-of-flight MR angiography
    5.
    发明授权
    Correction of artifacts in time-of-flight MR angiography 有权
    飞行时间MR血管造影术中人造物的修正

    公开(公告)号：US08634623B2

    公开(公告)日：2014-01-21

    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： A61B6/03

    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。

    Magnetic resonance method and apparatus for time-resolved acquisition of magnetic resonance data
    6.
    发明授权
    Magnetic resonance method and apparatus for time-resolved acquisition of magnetic resonance data 有权
    用于时间分辨采集磁共振数据的磁共振方法和装置

    公开(公告)号：US08598873B2

    公开(公告)日：2013-12-03

    申请号：US12700191

    申请日：2010-02-04

    申请人： Stephan Kannengiesser ,  Peter Schmitt ,  Michael Zenge

    发明人： Stephan Kannengiesser ,  Peter Schmitt ,  Michael Zenge

    IPC分类号： A61B5/055 ,  G01R33/563 ,  G01R33/561

    CPC分类号： G01R33/56375 ,  A61B5/0555 ,  G01R33/5619 ,  G01R33/56308 ,  G01R33/56383

    摘要： In a method and apparatus for time-resolved acquisition of magnetic resonance (MR) data, an examination subject is continuously moved through the examination region of an MR scanner, and MR signals are acquired. Prior to the acquisition of MR signals, a phase coding that corresponds to a position for data entry in k-space is carried out. An interruption of the movement of the subject takes place at a predetermined table position, and the acquisition of MR signals is continued over the course of a predetermined time period, while the subject is at rest in the predetermined position. At least while the subject is at rest, the phase coding causes acquisition of a predetermined number of MR signals for filling a first region of k-space to alternate with MR data and a predetermined number of MR signals for filling a second region of k-space.

    摘要翻译： 在用于时间分辨获取磁共振（MR）数据的方法和装置中，检查对象连续移动通过MR扫描器的检查区域，并且获取MR信号。 在获取MR信号之前，执行对应于k空间中的数据输入位置的相位编码。 被检体的动作的中断发生在规定的工作台位置，并且在预定时间段内持续进行MR信号的采集，同时被检体在预定位置处于静止状态。 至少在被摄体处于静止状态时，相位编码使得获得预定数量的MR信号用于填充k空间的第一区域以与MR数据交替并且预定数量的MR信号用于填充k-空间的第二区域， 空间。

    Patient support table control system for use in MR imaging
    8.
    发明授权
    Patient support table control system for use in MR imaging 有权
    用于MR成像的患者支架表控制系统

    公开(公告)号：US08600476B2

    公开(公告)日：2013-12-03

    申请号：US13281743

    申请日：2011-10-26

    申请人： Xiaoming Bi ,  Christopher Glielmi ,  Peter Schmitt ,  Peter Weale ,  Michael Zenge ,  Sven Zuehlsdorff

    发明人： Xiaoming Bi ,  Christopher Glielmi ,  Peter Schmitt ,  Peter Weale ,  Michael Zenge ,  Sven Zuehlsdorff

    IPC分类号： A61B5/05

    CPC分类号： A61B5/055 ,  A61B5/0037 ,  A61B5/0555 ,  G06T7/0012 ,  G06T2207/10016 ,  G06T2207/10088 ,  G06T2207/30101 ,  G06T2207/30104

    摘要： A system for Non-Contrast Agent enhanced MR imaging includes an MR image acquisition device for acquiring imaging datasets comprising one or more image slabs individually comprising multiple image slices. An image data processor processes data representing an acquired image slice to detect a predetermined anatomical feature of a patient by detecting an edge of the anatomical feature in response to detection of pixel luminance transitions. A patient support table controller automatically moves a patient table at a velocity adaptively and dynamically determined by, selecting data modifying table velocity from predetermined information associating an anatomical feature with table velocity modification data in response to detection of the anatomical feature and adaptively determining a table velocity using the modification data.

    摘要翻译： 用于非对比剂增强MR成像的系统包括用于采集包括单独包括多个图像切片的一个或多个图像平板的成像数据集的MR图像采集装置。 图像数据处理器处理表示所获取的图像切片的数据，以通过响应于像素亮度转换的检测来检测解剖特征的边缘来检测患者的预定解剖特征。 患者支撑台控制器以自适应和动态确定的速度自动移动患者台，响应于解剖特征的检测，从响应于解剖特征的检测的预定信息中选择数据修改表速度，从而将解剖特征与表速度修改数据相关联，并自适应地确定表速度 使用修改数据。

    Patient Support Table Control System for Use in MR Imaging
    9.
    发明申请
    Patient Support Table Control System for Use in MR Imaging 有权
    用于MR成像的患者支持表控制系统

    公开(公告)号：US20120271156A1

    公开(公告)日：2012-10-25

    申请号：US13281743

    申请日：2011-10-26

    申请人： Xiaoming Bi ,  Christopher Glielmi ,  Peter Schmitt ,  Peter Weale ,  Michael Zenge ,  Sven Zuehlsdorff

    发明人： Xiaoming Bi ,  Christopher Glielmi ,  Peter Schmitt ,  Peter Weale ,  Michael Zenge ,  Sven Zuehlsdorff

    IPC分类号： A61B5/055

    CPC分类号： A61B5/055 ,  A61B5/0037 ,  A61B5/0555 ,  G06T7/0012 ,  G06T2207/10016 ,  G06T2207/10088 ,  G06T2207/30101 ,  G06T2207/30104

    摘要： A system for Non-Contrast Agent enhanced MR imaging includes an MR image acquisition device for acquiring imaging datasets comprising one or more image slabs individually comprising multiple image slices. An image data processor processes data representing an acquired image slice to detect a predetermined anatomical feature of a patient by detecting an edge of the anatomical feature in response to detection of pixel luminance transitions. A patient support table controller automatically moves a patient table at a velocity adaptively and dynamically determined by, selecting data modifying table velocity from predetermined information associating an anatomical feature with table velocity modification data in response to detection of the anatomical feature and adaptively determining a table velocity using the modification data.

    摘要翻译： 用于非对比剂增强MR成像的系统包括用于采集包括单独包括多个图像切片的一个或多个图像平板的成像数据集的MR图像采集装置。 图像数据处理器处理表示所获取的图像切片的数据，以通过响应于像素亮度转换的检测来检测解剖特征的边缘来检测患者的预定解剖特征。 患者支撑台控制器以自适应和动态确定的速度自动移动患者台，响应于解剖特征的检测，从响应于解剖特征的检测的预定信息中选择数据修改表速度，从而将解剖特征与表速度修改数据相关联，并自适应地确定表速度 使用修改数据。