公开(公告)号：US08148979B1

公开(公告)日：2012-04-03

申请号：US12425350

申请日：2009-04-16

申请人： Jiang Du

发明人： Jiang Du

IPC分类号： G01V3/00

CPC分类号： G01R33/5602 ,  G01R33/4816 ,  G01R33/4824 ,  G01R33/4826 ,  G01R33/4828

摘要： Techniques and systems for magnetic resonance imaging are disclosed in this specification. In one aspect, imaging of tissues having short transverse relaxation times T2 is described including short echo time (TE) signal acquisition preceded by suppression of signal from the surrounding tissues having long transverse relaxation times T2, to increase the contrast and dynamic range of magnetic resonance (MR) images contributed by the tissues having short T2.

摘要翻译： 用于磁共振成像的技术和系统在本说明书中公开。 在一个方面，描述具有短横向弛豫时间T2的组织的成像，其包括在来自具有长横向弛豫时间T2的周围组织的信号的抑制之前的短回波时间（TE）信号获取，以增加磁共振的对比度和动态范围 （MR）图像由具有短T2的组织贡献。

公开(公告)号：US20070255130A1

公开(公告)日：2007-11-01

申请号：US11735415

申请日：2007-04-13

申请人： Jiang Du

发明人： Jiang Du

IPC分类号： A61B5/05

CPC分类号： G01R33/5619 ,  G01R33/4824 ,  G01R33/5601 ,  G01R33/56325 ,  G01R33/5635

摘要： Methods, systems, and apparatus for magnetic resonance imaging (MRI) are described. In one example, the method includes applying a sample-selective magnetic field gradient sequence along a slice direction to partition responses from a sample under magnetic resonance imaging into a plurality of different regions of slices in the k space, applying spiral readout gradients to the sample to obtain echo data from the sample, and applying a Time Resolved Imaging of Contrast Kinetics imaging technique to sample the different regions of slices in the k space.

摘要翻译： 描述了用于磁共振成像（MRI）的方法，系统和装置。 在一个示例中，该方法包括沿着切片方向施加样本选择磁场梯度序列以将来自磁共振成像处的样本的响应分配到k空间中的多个不同的切片区域，将螺旋读出梯度应用于样本 从样本获得回波数据，并应用时间分辨成像的对比动力学成像技术对k空间中切片的不同区域进行采样。

公开(公告)号：US20070255129A1

公开(公告)日：2007-11-01

申请号：US11735381

申请日：2007-04-13

申请人： Jiang Du ,  Mark Bydder ,  Graeme Bydder

发明人： Jiang Du ,  Mark Bydder ,  Graeme Bydder

IPC分类号： A61B5/05

CPC分类号： G01R33/561 ,  G01R33/4824 ,  G01R33/5602 ,  G01R33/56518 ,  G01R33/56572

摘要： Methods, systems and computer program products of magnetic resonance imaging (MRI) using ultra short echo times and spiral sampling in k-space are disclosed. A long inversion radio frequency (RF) pulse that inverts magnetization of long T2 components are applied to a sample that exhibits long transverse relaxation time (T2) components and short T2 components to minimize signals corresponding to the long T2 components. In addition, half RF excitation pulses are applied to the sample to select one or more echo times. Data corresponding to the selected one or more echo times are acquired using a spiral trajectory, and a first echo image is obtained based on the acquired data.

摘要翻译： 公开了使用超短回波时间和k空间螺旋采样的磁共振成像（MRI）的方法，系统和计算机程序产品。 将长T 2分量的磁化反转的长反转射频（RF）脉冲施加到展现长横向弛豫时间（T 2）分量和短T 2分量的样本，以使对应于长T 2分量的信号最小化。 另外，半个RF激励脉冲被施加到样本以选择一个或多个回波时间。 使用螺旋轨迹获取与所选择的一个或多个回波时间相对应的数据，并且基于获取的数据获得第一回波图像。

公开(公告)号：US06556856B1

公开(公告)日：2003-04-29

申请号：US09664152

申请日：2000-09-18

申请人： Charles A. Mistretta ,  Thomas M. Grist ,  Yousef Mazahheri ,  Timothy J. Carroll ,  Jiang Du ,  Walter Block

发明人： Charles A. Mistretta ,  Thomas M. Grist ,  Yousef Mazahheri ,  Timothy J. Carroll ,  Jiang Du ,  Walter Block

IPC分类号： A61B5055

CPC分类号： G01R33/5635 ,  G01R33/5619

摘要： A magnetic resonance angiogram (MRA) is acquired using a contrast enhancement method in which a series of low resolution NMR images are rapidly acquired during a time resolved phase of the examination in which the contrast bolus makes a first pass through the arteries and veins. Additional, high spatial resolution NMR image data is acquired in a subsequent steady-state phase of the examination. The low resolution NMR image is segmented and masked to depict only arteries, and the central k-space region of this data is combined with the peripheral k-space data portion of the high resolution NMR data to produce one or more images.

摘要翻译： 使用对比度增强方法获得磁共振血管造影（MRA），其中在检查的时间分辨阶段期间快速获取一系列低分辨NMR图像，其中对比剂推注首先通过动脉和静脉。 此外，在随后的检查的稳态阶段获取高空间分辨率NMR图像数据。 低分辨率NMR图像被分割和掩蔽以仅描绘动脉，并且该数据的中心k空间区域与高分辨率NMR数据的外围k空间数据部分组合以产生一个或多个图像。

公开(公告)号：US08977420B2

公开(公告)日：2015-03-10

申请号：US13805445

申请日：2010-06-23

申请人： Bing Deng ,  Jiang Du

发明人： Bing Deng ,  Jiang Du

IPC分类号： G08G1/00 ,  B60W30/165 ,  B60W30/18 ,  B60W50/00 ,  G08G1/07

CPC分类号： G08G1/00 ,  B60W30/165 ,  B60W30/18154 ,  B60W50/0098 ,  B60W2050/008 ,  B60W2550/408 ,  G08G1/07

摘要： A method for controlling vehicle procession through an intersection includes monitoring movement of a first vehicle through the intersection, and synchronizing movement of a second vehicle following the first vehicle through the intersection to the first vehicle movement through the intersection.

摘要翻译： 用于通过交叉路口控制车辆行动的方法包括监视第一车辆通过交叉路口的运动，并且使通过交叉口的第一车辆之后的第二车辆的运动与通过交叉口的第一车辆运动同步。

公开(公告)号：US08386013B2

公开(公告)日：2013-02-26

申请号：US11735381

申请日：2007-04-13

申请人： Jiang Du ,  Mark Bydder ,  Graeme M. Bydder

发明人： Jiang Du ,  Mark Bydder ,  Graeme M. Bydder

IPC分类号： A61B5/05

CPC分类号： G01R33/561 ,  G01R33/4824 ,  G01R33/5602 ,  G01R33/56518 ,  G01R33/56572

摘要： Methods, systems and computer program products of magnetic resonance imaging (MRI) using ultra short echo times and spiral sampling in k-space are disclosed. A long inversion radio frequency (RF) pulse that inverts magnetization of long T2 components are applied to a sample that exhibits long transverse relaxation time (T2) components and short T2 components to minimize signals corresponding to the long T2 components. In addition, half RF excitation pulses are applied to the sample to select one or more echo times. Data corresponding to the selected one or more echo times are acquired using a spiral trajectory, and a first echo image is obtained based on the acquired data.

摘要翻译： 公开了使用超短回波时间和k空间螺旋采样的磁共振成像（MRI）的方法，系统和计算机程序产品。 将长T2分量的磁化反转的长反转射频（RF）脉冲施加到展现长横向弛豫时间（T2）分量和短T2分量的样本，以最小化对应于长T2分量的信号。 另外，半个RF激励脉冲被施加到样本以选择一个或多个回波时间。 使用螺旋轨迹获取与所选择的一个或多个回波时间相对应的数据，并且基于获取的数据获得第一回波图像。

公开(公告)号：US20120188060A1

公开(公告)日：2012-07-26

申请号：US13258859

申请日：2009-12-28

申请人： Jiang Du ,  Li Wang ,  Jian Zhang

发明人： Jiang Du ,  Li Wang ,  Jian Zhang

IPC分类号： G06K7/01

CPC分类号： G06K7/10039

摘要： The present invention discloses a method and system for tallying tags in a radio frequency identification system. The method comprises: upon receiving a tallying command sent by the reader, the tags reflecting a first response message used for decoding and checking (S402); upon receiving the first response message, the reader sending a decoded random number (RN) if it decodes the first response message correctly; upon receiving the decoded RN, the tags reflecting a second response message containing tag ID information after confirming that the RN is consistent with their own RN (S405); and upon receiving the second response message, the reader confirming that the tallying is completed if the tag ID information contained in the second response message is correct (S407).

摘要翻译： 本发明公开了一种用于在射频识别系统中标记标签的方法和系统。 该方法包括：在接收到读取器发送的计数命令时，该标签反映用于解码和检查的第一响应消息（S402）; 在接收到第一响应消息时，读取​​器如果正确地解码第一响应消息，则发送解码随机数（RN）; 在接收到解码的RN之后，标签在确认RN与其自己的RN一致之后反映包含标签ID信息的第二响应消息（S405）; 并且在接收到第二响应消息时，如果包含在第二响应消息中的标签ID信息正确，则读取器确认已经完成了计数（S407）。

公开(公告)号：US20120146642A1

公开(公告)日：2012-06-14

申请号：US13399992

申请日：2012-02-17

申请人： Jiang Du

发明人： Jiang Du

IPC分类号： G01R33/48

CPC分类号： G01R33/5619 ,  G01R33/4824 ,  G01R33/5601 ,  G01R33/56325 ,  G01R33/5635

摘要： Methods, systems, and apparatus for magnetic resonance imaging (MRI) are described. In one example, the method includes applying a sample-selective magnetic field gradient sequence along a slice direction to partition responses from a sample under magnetic resonance imaging into a plurality of different regions of slices in the k space, applying spiral readout gradients to the sample to obtain echo data from the sample, and applying a Time Resolved Imaging of Contrast Kinetics imaging technique to sample the different regions of slices in the k space.

摘要翻译： 描述了用于磁共振成像（MRI）的方法，系统和装置。 在一个示例中，该方法包括沿着切片方向施加样本选择磁场梯度序列以将来自磁共振成像处的样本的响应分配到k空间中的多个不同的切片区域，将螺旋读出梯度应用于样本 从样本获得回波数据，并应用时间分辨成像的对比动力学成像技术对k空间中切片的不同区域进行采样。

公开(公告)号：US08089278B1

公开(公告)日：2012-01-03

申请号：US12422847

申请日：2009-04-13

申请人： Jiang Du

发明人： Jiang Du

IPC分类号： G01V3/00

CPC分类号： G01R33/56308 ,  G01R33/4824 ,  G01R33/5601 ,  G01R33/5619 ,  G01R33/5635

摘要： The techniques and systems described in this application can be used to, in one implementation, optimize data acquisition including sampling trajectories and undersampling factors. A method performed by a nuclear magnetic resonance imaging (MRI) system comprises applying a gradient and a radio frequency pulse sequence to an imaging target to partition a three-dimensional (3D) Cartesian k-space into a plurality of half projections in a ky-kz plane, the plurality of half projections divided into a plurality of interleaves, each interleave comprising one or more of the half projections and providing an asymmetric radial sampling of the ky-kz plane. Magnetic resonance signals are acquired to sample phase and slice encodings along each of the plurality of half projections. The magnetic resonance signal is processed to reconstruct at least one dynamic frame of the imaging subject to provide 3D volumetric imaging of contrast dynamics.

摘要翻译： 在一个实现中，本申请中描述的技术和系统可以用于优化包括采样轨迹和欠采样因素的数据采集。 通过核磁共振成像（MRI）系统执行的方法包括将梯度和射频脉冲序列应用于成像目标，以将三维（3D）笛卡尔k空间划分成多个半投影， kz平面，所述多个半投影被分成多个交错，每个交织包括所述半投影中的一个或多个并且提供ky-kz平面的不对称径向采样。 获取磁共振信号以沿着多个半投影中的每一个采样相位和切片编码。 处理磁共振信号以重建成像对象的至少一个动态帧，以提供对比度动态的3D体积成像。

公开(公告)号：US07602184B2

公开(公告)日：2009-10-13

申请号：US12112957

申请日：2008-04-30

申请人： Jiang Du

发明人： Jiang Du

IPC分类号： G01V3/00

CPC分类号： G01R33/485 ,  G01R33/4824 ,  G01R33/561

摘要： Radio frequency (rf) pulses are applied to a sample to produce magnetic resonance (MR) echo signals from the sample at multiple different echo times. Magnetic field gradients are applied to the sample to select for acquisition components of each MR echo signal. The selected components correspond to groups of radial projections in k-space. Each group is associated with one of the echo times. Each group defines a different set of projection angles in the k-space, and the groups are interleaved to reduce streak artifacts in spectroscopic images associated with a resonance frequency. Images of the sample are generated based on acquired MR signals. In some implementations, an echo time of eight microseconds or less is included in the multiple different echo times.

摘要翻译： 将射频（rf）脉冲施加到样本以在多个不同回波时间从样本产生磁共振（MR）回波信号。 将磁场梯度应用于样本以选择每个MR回波信号的采集分量。 所选择的分量对应于k空间中的径向投影组。 每个组与回波时间之一相关联。 每个组在k空间中定义不同的投影角度集合，并且这些组被交织以减少与谐振频率相关联的分光图像中的条纹伪像。 基于获取的MR信号生成样本的图像。 在一些实现中，在多个不同的回波时间中包括八微秒或更短的回波时间。