公开(公告)号：US20080278165A1

公开(公告)日：2008-11-13

申请号：US12148367

申请日：2008-04-18

申请人： Yu Li ,  Feng Huang ,  G. Randy Duensing

发明人： Yu Li ,  Feng Huang ,  G. Randy Duensing

IPC分类号： G01R33/48

CPC分类号： G01R33/5611

摘要： Embodiments of the invention pertain to a method and apparatus for image reconstruction for parallel Magnetic Resonance Imaging (MRI). In a specific embodiment, a method for image reconstruction in image space is provided. The method can suppress aliasing caused by undersampling when the number of sampling lines in k-space is reduced to increase the imaging speed. In an embodiment, suppressing aliasing from under-sampling can improve the quality of images reconstructed from the data acquired using a MRI coil array. In an embodiment, the method operates in image space and achieves a good resolution. In the reconstruction, the sum of square errors can be minimized within a region of interest, which can allow the image reconstruction to be optimized in a particular imaging region of interest by sacrificing the reconstruction of other regions. In a further embodiment, image reconstruction can be implemented region by region, allowing global optimization by spending a longer time in reconstruction.

摘要翻译： 本发明的实施例涉及用于并行磁共振成像（MRI）的图像重建的方法和装置。 在具体实施例中，提供了一种用于图像空间中的图像重建的方法。 当减小k空间中的采样线的数量以增加成像速度时，该方法可以抑制由欠采样引起的混叠。 在一个实施例中，抑制来自欠采样的混叠可以改善从使用MRI线圈阵列获取的数据重建的图像的质量。 在一个实施例中，该方法在图像空间中操作并且实现良好的分辨率。 在重建中，平方误差的和可以在感兴趣的区域内最小化，这可以允许通过牺牲其他区域的重建来在特定的感兴趣的成像区域中优化图像重建。 在另一个实施例中，图像重建可以逐个区域实现，从而通过在重建中花更长的时间来实现全局优化。

公开(公告)号：US07230429B1

公开(公告)日：2007-06-12

申请号：US11041904

申请日：2005-01-24

申请人： Feng Huang ,  G. Randy Duensing ,  Yunmei Chen

发明人： Feng Huang ,  G. Randy Duensing ,  Yunmei Chen

IPC分类号： G01V3/00

CPC分类号： G01R33/5611

摘要： The subject invention pertains to a method and apparatus for producing sensitivity maps with respect to medical imaging. The subject invention relates to a method for applying an inpainting model to correct images in parallel imaging. Some images, such as coil sensitivity maps and intensity correction maps, have no signal at some places and may have noise. Advantageously, the subject invention allows an accurate method to fill in holes in sensitivity maps, where holes can arise when, for example, the pixel intensity magnitudes for two images being used to create the sensitivity map are zero. A specific embodiment of the subject invention can accomplish de-noise, interpolation, and extrapolation simultaneously for these types of maps such that the local texture can be carefully protected.

摘要翻译： 本发明涉及用于生成关于医学成像的灵敏度图的方法和装置。 本发明涉及一种用于应用修补模型以校正并行成像中的图像的方法。 一些图像，例如线圈灵敏度图和强度校正图，在某些地方没有信号并且可能具有噪声。 有利地，本发明允许精确的方法在灵敏度图中填充孔，其中例如当用于创建灵敏度图的两个图像的像素强度幅度为零时，可能出现孔。 本发明的具体实施例可以对这些类型的地图同时完成去噪声，插值和外插，使得可以仔细地保护局部纹理。

公开(公告)号：US07576536B2

公开(公告)日：2009-08-18

申请号：US11430384

申请日：2006-05-08

申请人： James Akao ,  G. Randy Duensing ,  Feng Huang

发明人： James Akao ,  G. Randy Duensing ,  Feng Huang

IPC分类号： G01V3/00

CPC分类号： G01R33/5611

摘要： The subject invention pertains to method and apparatus for parallel imaging. The subject method can be utilized with imaging systems utilizing parallel imaging techniques. In a specific embodiment, the subject invention can be used in magnetic resonance imaging (MRI). A specific embodiment of the subject invention can reduce parallel reconstruction CPU and system resources usage by reducing the number of channels employed in the parallel reconstruction from the M channel signals to a lower number of channel signals. In a specific embodiment, sensitivity map information can be used in the selection of the M channel signals to be used, and how the selected channel signals are to be combined, to create the output channel signals. In an embodiment, for a given set of radio-frequency (RF) elements, an optimal choice of reconstructed channel modes can be made using prior view information and/or sensitivity data for the given slice. The subject invention can utilize parallel imaging speed up in multiple directions.

摘要翻译： 本发明涉及用于并行成像的方法和装置。 本方法可以利用利用并行成像技术的成像系统。 在具体实施方案中，本发明可用于磁共振成像（MRI）。 本发明的具体实施例可以通过将并行重建中采用的信道数量从M个信道信号减少到较少数量的信道信号来减少并行重建CPU和系统资源的使用。 在具体实施例中，灵敏度映射信息可以用于选择要使用的M个信道信号，以及如何组合所选择的信道信号，以产生输出信道信号。 在一个实施例中，对于给定的一组射频（RF）元件，可以使用给定切片的先前视图信息和/或灵敏度数据来进行重建信道模式的最佳选择。 本发明可以在多个方向上利用并行成像加速。

公开(公告)号：US06865494B2

公开(公告)日：2005-03-08

申请号：US10323135

申请日：2002-12-18

申请人： G. Randy Duensing ,  Charles Saylor ,  Feng Huang

发明人： G. Randy Duensing ,  Charles Saylor ,  Feng Huang

IPC分类号： A61B5/053 ,  A61B5/055 ,  G01R33/44 ,  G06F19/00

CPC分类号： A61B5/0507 ,  A61B5/0536 ,  A61B5/055 ,  A61B2562/02 ,  A61B2562/046 ,  G01R33/44

摘要： The subject invention pertains to an imaging technique and apparatus which can utilize an array of RF probes to measure the non-resonant thermal noise which is produced within a sample, such as a body, and produce a non-resonant thermal noise correlation. The detected noise correlation is a function of the spatial overlap of the electromagnetic fields of the probes and the spatial distribution of the conductivity of the sample. The subject technique, which can be referred to as Noise Tomography (NT), can generate a three-dimensional map of the conductivity of the sample. Since the subject invention utilizes detection of the thermal noise generated within the body, the subject method can be non-invasive and can be implemented without requiring external power, chemicals, or radionuclides to be introduced into the body. The subject imaging method can be used as a stand along technique or can be used in conjunction with other imaging techniques.

摘要翻译： 本发明涉及一种成像技术和装置，其可以利用RF探针阵列来测量诸如身体之类的样品内产生的非共振热噪声并产生非共振热噪声相关性。 检测到的噪声相关性是探针的电磁场的空间重叠和样品的电导率的空间分布的函数。 可以称为噪声断层扫描（NT）的主题技术可以产生样品的电导率的三维图。 由于本发明利用了在身体内产生的热噪声的检测，所以本发明的方法可以是非侵入性的，并且可以在不需要将外部电源，化学物质或放射性核素引入体内的情况下实现。 主题成像方法可以用作支撑技术或可以与其他成像技术结合使用。

公开(公告)号：US20120002859A1

公开(公告)日：2012-01-05

申请号：US13254468

申请日：2010-02-09

申请人： Feng Huang ,  Wei Lin ,  Yu Li

发明人： Feng Huang ,  Wei Lin ,  Yu Li

IPC分类号： G06K9/00

CPC分类号： G01R33/5611 ,  G01R33/56509

摘要： Magnetic resonance (MR) imaging performed in cooperation with an MR scanner (10) uses a method comprising: (i) acquiring sensitivity maps (34) for a plurality of radio frequency coils using a MR pre scan (50) performed by the MR scanner; (ii) acquiring an MR imaging data set (38) using the plurality of radio frequency coils and the MR scanner; and (iii) reconstructing (62, 78) the MR imaging data set using partially parallel image reconstruction employing the sensitivity maps and a correction for subject motion between the acquiring (i) and the acquiring (ii).

摘要翻译： 与MR扫描器（10）协作执行的磁共振（MR）成像使用一种方法，包括：（i）使用由MR扫描器执行的MR预扫描（50）获取多个射频线圈的灵敏度图（34） ; （ii）使用所述多个射频线圈和所述MR扫描器获取MR成像数据集（38）; 以及（iii）使用使用灵敏度图的部分平行图像重建和在获取（i）和获取（ii）之间的主题运动的校正来重建（62,78）MR成像数据集。

公开(公告)号：US10067213B2

公开(公告)日：2018-09-04

申请号：US13995378

申请日：2011-12-16

申请人： Feng Huang ,  Wei Lin

发明人： Feng Huang ,  Wei Lin

IPC分类号： G01V3/00 ,  G01R33/565 ,  G01R33/561 ,  G01R33/567 ,  G01R33/58 ,  G01R33/563

摘要： Magnetic resonance (MR) calibration data are acquired using a plurality of radio frequency receive coils, and both coil sensitivity maps and reference projection vectors are generated based on the MR calibration data. During imaging, extra navigator projection vectors are acquired, or part of the imaging data can be used as navigator projection vectors. Partially parallel imaging (PPI) can performed to enhance the navigation information. The navigator projection vectors and the reference projection vectors are sensitivity weighted using the coil sensitivity maps to generate navigator sensitivity weighted projection vectors (navigator SWPV) and reference sensitivity weighted projection vectors (reference SWPV) respectively, and these are compared to generate subject position information. The subject motions are compensated prospectively or retrospectively using the generated subject position information. The motion compensation may be prospective, performed by adjusting an imaging volume of the PPI based on the subject position information.

公开(公告)号：US20140070804A1

公开(公告)日：2014-03-13

申请号：US14005300

申请日：2012-03-16

申请人： Feng Huang ,  Wei Lin

发明人： Feng Huang ,  Wei Lin

IPC分类号： G01R33/56 ,  G01R33/34

CPC分类号： G01R33/56 ,  G01R33/34 ,  G01R33/5611 ,  G01R33/5612 ,  G01R33/56509

摘要： A plurality of coil elements (18, 18′) and corresponding receivers (26) define a plurality of channels, each carrying a corresponding partial k-space data set (60, 64). One or more processors (30) generate (80) a first image representation (76) based on the plurality of partial k-space data sets, generate a relative sensitivity map (82) for each of the channels, project (90) the first image representation (76) with each of the relative sensitivity maps (82) to generate a plurality of recreated k-space data sets (92), and each partial k-space data and the corresponding recreated k-space data set are combined to generate substituted k-space data sets (96). The substituted k-space data sets are reconstructed (100) into a plurality of images (102) which are combined (104) to create a final image (106).

摘要翻译： 多个线圈元件（18,18'）和相应的接收器（26）限定多个通道，每个通道承载相应的部分k空间数据组（60,64）。 一个或多个处理器（30）基于多个部分k空间数据集生成（80）第一图像表示（76），为每个通道生成相对灵敏度图（82），项目（90）第一 图像表示（76），其中每个相对灵敏度映射（82）生成多个重新创建的k空间数据集（92），并且将每个部分k空间数据和相应的重新创建的k空间数据组合以产生 取代k空间数据集（96）。 替换的k空间数据集被重建（100）成多个图像（102），它们被组合（104）以产生最终图像（106）。

公开(公告)号：US07929497B1

公开(公告)日：2011-04-19

申请号：US12020675

申请日：2008-01-28

申请人： Mehdi Alasti ,  Mohammad Hassan Partovi ,  Feng Huang

发明人： Mehdi Alasti ,  Mohammad Hassan Partovi ,  Feng Huang

IPC分类号： H04W4/00

CPC分类号： H04W36/32 ,  H04W36/0011

摘要： A method of operating a communication system is disclosed. A first communication session between a first base station and a mobile station is established. A service session between a first access network and the mobile station is established. When the mobile station moves to the service area of a new base station, a second communication session between a second base station and the mobile station is established. A distance between the first base station and the second base station is determined. If the distance exceeds a criteria, the service session is handed off a second access network. The criteria, which must be greater than zero, corresponds to the number of base station service areas separating the first base station and the second base station.

摘要翻译： 公开了一种操作通信系统的方法。 建立第一基站和移动台之间的第一通信会话。 建立第一接入网与移动台之间的业务会话。 当移动站移动到新基站的服务区时，建立第二基站与移动台之间的第二通信会话。 确定第一基站和第二基站之间的距离。 如果该距离超过一个标准，则会将第二个接入网络切换成业务会话。 必须大于零的标准对应于分离第一基站和第二基站的基站服务区域的数量。

公开(公告)号：US07372870B2

公开(公告)日：2008-05-13

申请号：US11002285

申请日：2004-12-03

申请人： Feng Huang ,  Ming Cheng

发明人： Feng Huang ,  Ming Cheng

IPC分类号： H04J3/16 ,  H04J3/22 ,  G01R31/08 ,  G06F11/00 ,  H04L1/00 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04L47/825 ,  H04J3/1617 ,  H04L45/00 ,  H04L45/50 ,  H04L47/70 ,  H04L47/724 ,  H04L47/728 ,  H04L47/746

摘要： An Ethernet transmission apparatus having a quick protection and fair attribute as well as a corresponding method are disclosed. The apparatus comprises a sorter, MPLS processing module and a SDH processing module, wherein, the MPLS processing module includes a VC tag packaging unit, a multiplexing unit, a tag managing unit, a scheduler, an MPLS protective unit, an MPLS signaling unit and a Fair algorithm unit. The present invention sorts the Ethernet transactions and labels VC tags by the VC tag packaging unit so as to form a PW LSP. PW LSP with a plurality of identical source and target ends are multiplexed into a tunnel LSP. MPLS signaling unit counts the network nodes that LSP passes by and calculates a protective LSP. MPLS protective unit selects an active LSP or a protective LSP and enters the scheduler for queuing. The FAIR algorithm controls the allotment of the bandwidth so as to secure the fairness of the transactions.

摘要翻译： 公开了具有快速保护和公平属性的以太网发送装置以及相应的方法。 该装置包括分类器，MPLS处理模块和SDH处理模块，其中，MPLS处理模块包括VC标签封装单元，复用单元，标签管理单元，调度器，MPLS保护单元，MPLS信令单元和 一个公平的算法单元。 本发明通过VC标签封装单元对以太网事务进行分类并标注VC标签，形成PW LSP。 具有多个相同的源和目标端的PW LSP被复用到隧道LSP中。 MPLS信令单元对LSP通过的网络节点进行计数，并计算保护LSP。 MPLS保护单元选择主动LSP或保护LSP，进入调度器进行排队。 FAIR算法控制带宽的分配，以确保交易的公平性。

公开(公告)号：US07202663B2

公开(公告)日：2007-04-10

申请号：US10987038

申请日：2004-11-12

申请人： Feng Huang

发明人： Feng Huang

IPC分类号： G01V3/00

CPC分类号： G01R33/5611 ,  G01R33/56308

摘要： The subject invention pertains to a method for acquiring and reconstructing a collection of time crucial magnetic resonance images. The subject invention is applicable for speeding up acquisition of or improving the quality of the set of images. In one specific embodiment, the subject method is used to reduce the time required to generate a cardiac CINE sequence of phases of the heart.

摘要翻译： 本发明涉及一种用于获取和重建时间关键磁共振图像的集合的方法。 本发明适用于加速获取或提高图像集的质量。 在一个具体实施方案中，本方法用于减少产生心脏的心脏CINE序列所需的时间。