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    SYSTEM AND METHOD FOR BACKGROUND PHASE CORRECTION FOR PHASE CONTRAST FLOW IMAGES
    24.
    发明申请
    SYSTEM AND METHOD FOR BACKGROUND PHASE CORRECTION FOR PHASE CONTRAST FLOW IMAGES 有权
    用于相位对比流图像的相位校正的系统和方法

    公开(公告)号：US20120076380A1

    公开(公告)日：2012-03-29

    申请号：US13210497

    申请日：2011-08-16

    Applicant: Jens Gühring ,  Marie-Pierre Jolly ,  Hui Xue

    Inventor： Jens Gühring ,  Marie-Pierre Jolly ,  Hui Xue

    IPC: G06K9/00

    CPC classification number: G01R33/56316 ,  A61B5/0263 ,  A61B5/055 ,  G01R33/5608

    Abstract: A method for correcting the background phase in magnetic resonance phase contrast flow images includes providing a time series of velocity encoded magnetic resonance images of a patient, where the time series of velocity encoded images comprises for each time point a phase contrast image where a pixel intensity is proportional to a flow velocity, measuring a change of intensity for each pixel over the time series of phase contrast images, identifying pixels with a low measure of temporal change as stationary pixels, and calculating a correction field for the stationary pixels, where the correction field represents a background phase to be subtracted from the phase contrast image.

    Abstract translation: 用于校正磁共振相位对比流图像中的背景相位的方法包括提供患者的速度编码的磁共振图像的时间序列，其中速度编码图像的时间序列包括每个时间点的像素强度 与流速成比例，测量在相位对比图像的时间序列上的每个像素的强度变化，将以时间变化的低度量度的像素识别为静止像素，以及计算用于静止像素的校正场，其中校正 场表示从相位差图像中减去的背景相位。

    System and method for background phase correction for phase contrast flow images
    25.
    发明授权
    System and method for background phase correction for phase contrast flow images 有权
    用于相位对比流图像的背景相位校正的系统和方法

    公开(公告)号：US08897519B2

    公开(公告)日：2014-11-25

    申请号：US13210497

    申请日：2011-08-16

    Applicant: Jens Gühring ,  Marie-Pierre Jolly ,  Hui Xue

    Inventor： Jens Gühring ,  Marie-Pierre Jolly ,  Hui Xue

    IPC: G06K9/00 ,  G01R33/563 ,  A61B5/026 ,  A61B5/055 ,  G01R33/56

    CPC classification number: G01R33/56316 ,  A61B5/0263 ,  A61B5/055 ,  G01R33/5608

    Abstract: A method for correcting the background phase in magnetic resonance phase contrast flow images includes providing a time series of velocity encoded magnetic resonance images of a patient, where the time series of velocity encoded images comprises for each time point a phase contrast image where a pixel intensity is proportional to a flow velocity, measuring a change of intensity for each pixel over the time series of phase contrast images, identifying pixels with a low measure of temporal change as stationary pixels, and calculating a correction field for the stationary pixels, where the correction field represents a background phase to be subtracted from the phase contrast image.

    Abstract translation: 用于校正磁共振相位对比流图像中的背景相位的方法包括提供患者的速度编码的磁共振图像的时间序列，其中速度编码图像的时间序列包括每个时间点的像素强度 与流速成比例，测量在相位对比图像的时间序列上的每个像素的强度变化，将以时间变化的低度量度的像素识别为静止像素，以及计算用于静止像素的校正场，其中校正 场表示从相位差图像中减去的背景相位。

    Motion tracking for clinical parameter derivation and adaptive flow acquisition in magnetic resonance imaging
    28.
    发明授权
    Motion tracking for clinical parameter derivation and adaptive flow acquisition in magnetic resonance imaging 有权
    磁共振成像中临床参数推导和自适应流量采集的运动跟踪

    公开(公告)号：US08792699B2

    公开(公告)日：2014-07-29

    申请号：US13239530

    申请日：2011-09-22

    Applicant: Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Xiaoguang Lu ,  Hui Xue ,  Jeremy Collins ,  Peter Weale

    Inventor： Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Xiaoguang Lu ,  Hui Xue ,  Jeremy Collins ,  Peter Weale

    IPC: G06K9/00

    CPC classification number: G01R33/56316

    Abstract: A method for clinical parameter derivation and adaptive flow acquisition within a sequence of magnetic resonance images includes commencing an acquisition of a sequence of images. One or more landmarks are automatically detected from within one or more images of the sequence of images. The detected one or more landmarks are propagated across subsequent images of the sequence of images. A plane is fitted to the propagation of landmarks. The positions of landmarks or alternatively the position of the fitted plane within the sequence of images is used for derivation of clinical parameters such as tissue velocities and/or performing adaptive flow acquisitions to measure blood flow properties.

    Abstract translation: 在磁共振图像序列内的临床参数推导和自适应流采集的方法包括开始获取图像序列。 在图像序列的一个或多个图像内自动检测一个或多个地标。 检测到的一个或多个地标在图像序列的后续图像中传播。 一个平面适合于地标的传播。 地标的位置或替代地，图像序列内的拟合平面的位置用于推导诸如组织速度的临床参数和/或执行自适应流采集以测量血流特性。

    Adsorbed gas content measuring instrument and its testing method
    29.
    发明授权
    Adsorbed gas content measuring instrument and its testing method 有权
    吸附气含量测量仪及其测试方法

    公开(公告)号：US08578754B2

    公开(公告)日：2013-11-12

    申请号：US13010795

    申请日：2011-01-21

    Applicant: Jinchuan Zhang ,  Ying Tang ,  Xuan Tang ,  Zhonglin Song ,  Dejian Zhai ,  Hui Xue

    Inventor： Jinchuan Zhang ,  Ying Tang ,  Xuan Tang ,  Zhonglin Song ,  Dejian Zhai ,  Hui Xue

    IPC: G01N33/18 ,  G01N1/22 ,  G01N1/12

    CPC classification number: G01N7/16 ,  G01N33/225

    Abstract: The present invention relates to an adsorbed gas content measuring instrument and its testing method. The instrument comprises sealed cylinders, gas collecting graduated canisters and a test box, wherein the sealed cylinders are provided with valves, the gas collecting graduated canisters are equipped with drain hole adjustment valves and vent hole switching valves fit for the valve ports, and there is a heating element and a temperature controller in the test box. The method is mainly as follows: put gas-contained samples and saturated brine into the sealed cylinder, seal the cylinder, feed water in the test box and heat the box, place the sealed cylinder into the water bath of the test box, introduce saturated brine into the gas collecting graduated canister, connect the canister and cylinder, open the drain hole of the gas collecting graduated canister, record the liquid level of the graduated canister and cut off the connection after the test. The present invention has a compact structure, small volume, good gas tightness, accurate measurement, uniform heating and simple testing operation, is easy to move and carry, and suitable for field application. It can be specially used for collecting and measuring various gases, especially small-volume gas, thus it is more practical in applications.

    Abstract translation: 本发明涉及吸附气体含量测量仪及其测试方法。 该仪器包括密封圆筒，气体收集分级罐和试验箱，其中密封圆柱体设有阀，气体收集分级罐配有排水孔调节阀和适合阀口的排气孔切换阀， 加热元件和温度控制器在测试箱中。 方法主要如下：将含气样品和饱和盐水放入密封圆筒中，密封圆筒，将试验箱内的水送入箱中，加热箱体，将密封圆筒放入试验箱的水浴中，引入饱和 盐水进入气体收集分级罐，连接罐和气瓶，打开集气分级罐的排水孔，记录分级罐的液位，并在试验后切断连接。 本发明结构紧凑，体积小，气密性好，测量准确，加热均匀，测试操作简单，易于移动携带，适用于现场应用。 它可以专门用于收集和测量各种气体，特别是小体积的气体，因此在应用中更为实用。

    ROBUST HIGH RESOLUTION SPECTRUM ESTIMATION METHOD FOR ACCURATE PHASOR, HARMONIC AND INTERHARMONIC MEASUREMENT IN POWER SYSTEMS
    30.
    发明申请
    ROBUST HIGH RESOLUTION SPECTRUM ESTIMATION METHOD FOR ACCURATE PHASOR, HARMONIC AND INTERHARMONIC MEASUREMENT IN POWER SYSTEMS 审中-公开
    用于电力系统中精确的相位，谐波和谐波测量的鲁棒高分辨率频谱估计方法

    公开(公告)号：US20130173189A1

    公开(公告)日：2013-07-04

    申请号：US13730421

    申请日：2012-12-28

    Applicant: Peng Zhang ,  Hui Xue ,  Ali Abdollahi

    Inventor： Peng Zhang ,  Hui Xue ,  Ali Abdollahi

    IPC: G06F17/17 ,  G06F17/16 ,  G01R21/00

    CPC classification number: G06F17/17 ,  G01R19/2513 ,  G01R21/00 ,  G01R23/20 ,  G06F17/10 ,  G06F17/16 ,  Y02E60/728 ,  Y04S10/265

    Abstract: A high-resolution Subspace-Least Mean Square (S-LMS) method for harmonic and interharmonic measurement in power systems is provided. The eigenvector corresponding to the smallest eigenvalue is used to calculate the frequencies of the signal, and the least mean square method is used to estimate the amplitude and phase angle of harmonic and interharmonic components based on the computed frequencies and time domain measurements of the signal. Three schemes, namely sparsity, catch-and-pinpoint, and hybrid are presented. The S-LMS method provides accurate phasor, harmonic and interharmonic measurements for power system monitoring. The speed, accuracy, and resilience of the S-LMS method can be further increased by each of the three schemes. The method has a wide range of applications in power quality analyzers, synchronized phasor measurement, situational awareness, dynamic equivalencing, and smart meters.

    Abstract translation: 提供了用于电力系统谐波和间谐波测量的高分辨率子空间 - 最小均方（S-LMS）方法。 使用对应于最小特征值的特征向量来计算信号的频率，并且使用最小均方根据信号的计算频率和时域测量来估计谐波和间谐波分量的幅度和相位角。 提出了三个方案，即稀疏性，准确性和准确性和混合性。 S-LMS方法为电力系统监测提供了准确的相量，谐波和间谐波测量。 S-LMS方法的速度，准确性和弹性可以通过三种方案中的每一种进一步提高。 该方法在电能质量分析仪，同步相量测量，情景感知，动态等效和智能电表方面具有广泛的应用。

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