公开(公告)号：US09057767B2

公开(公告)日：2015-06-16

申请号：US13465864

申请日：2012-05-07

申请人： J. Rock Hadley ,  Dennis L. Parker ,  Glen R. Morrell

发明人： J. Rock Hadley ,  Dennis L. Parker ,  Glen R. Morrell

IPC分类号： G01V3/00 ,  G01R33/345 ,  G01R33/34 ,  G01R33/3415

CPC分类号： G01R33/3456 ,  G01R33/34 ,  G01R33/34076 ,  G01R33/3415

摘要： Systems, devices and methods provide an RF coil which produces a field having linear phase variation across an imaging volume. In one embodiment, a coil comprises multiple microstrip elements configured to have an increased effective electrical length. This increase in electrical length allows for a larger linear phase shifts over the length of the microstrip element which in turn increases linear phase variation capabilities. This may be accomplished by increasing the effective dielectric properties of the microstrip element. Increasing the effective dielectric may be accomplished by utilizing distributed capacitors along the length of a microstrip element (e.g. lumped element capacitors), by altering the materials used to fabricate the microstrip element, etc. Additionally, increasing the effective dielectric may be accomplished using a combination of these means. Embodiments may further enable linear phase variation along the imaging volume at high frequencies, such as frequencies utilized for 3 T and above MRI devices.

摘要翻译： 系统，装置和方法提供RF线圈，其产生在成像体积上具有线性相位变化的场。 在一个实施例中，线圈包括配置成具有增加的有效电长度的多个微带元件。 电长度的这种增加允许在微带线元件的长度上产生较大的线性相移，这又增加了线性相位变化能力。 这可以通过增加微带元件的有效介电性能来实现。 通过改变用于制造微带线元件的材料等，通过利用沿着微带元件（例如集总元件电容器）的长度的分布式电容器来实现增加有效电介质。另外，增加有效电介质可以使用组合 的这些手段。 实施例还可以在诸如用于3T及以上MRI装置的频率的高频下沿成像体积进行线性相位变化。

公开(公告)号：US20120280685A1

公开(公告)日：2012-11-08

申请号：US13465864

申请日：2012-05-07

申请人： J. Rock Hadley ,  Dennis L. Parker ,  Glen R. Morrell

发明人： J. Rock Hadley ,  Dennis L. Parker ,  Glen R. Morrell

IPC分类号： G01R33/341 ,  G01R33/54

CPC分类号： G01R33/3456 ,  G01R33/34 ,  G01R33/34076 ,  G01R33/3415

摘要： Systems, devices and methods provide an RF coil which produces a field having linear phase variation across an imaging volume. In one embodiment, a coil comprises multiple microstrip elements configured to have an increased effective electrical length. This increase in electrical length allows for a larger linear phase shifts over the length of the microstrip element which in turn increases linear phase variation capabilities. This may be accomplished by increasing the effective dielectric properties of the microstrip element. Increasing the effective dielectric may be accomplished by utilizing distributed capacitors along the length of a microstrip element (e.g. lumped element capacitors), by altering the materials used to fabricate the microstrip element, etc. Additionally, increasing the effective dielectric may be accomplished using a combination of these means. Embodiments may further enable linear phase variation along the imaging volume at high frequencies, such as frequencies utilized for 3 T and above MRI devices.

摘要翻译： 系统，装置和方法提供RF线圈，其产生在成像体积上具有线性相位变化的场。 在一个实施例中，线圈包括配置成具有增加的有效电长度的多个微带元件。 电长度的这种增加允许在微带线元件的长度上产生较大的线性相移，这又增加了线性相位变化能力。 这可以通过增加微带元件的有效介电性能来实现。 通过改变用于制造微带线元件的材料等，通过利用沿着微带元件（例如集总元件电容器）的长度的分布式电容器来实现增加有效电介质。另外，增加有效电介质可以使用组合 的这些手段。 实施例还可以在诸如用于3T及以上MRI装置的频率的高频下沿成像体积进行线性相位变化。

公开(公告)号：US07353295B1

公开(公告)日：2008-04-01

申请号：US09542273

申请日：2000-04-04

申请人： James J. Crow ,  Dennis L. Parker

发明人： James J. Crow ,  Dennis L. Parker

IPC分类号： G06F15/16

CPC分类号： H04L67/16 ,  H04L67/1002 ,  H04L67/1021 ,  H04L67/1029 ,  H04L67/1031 ,  H04L67/1038 ,  H04L67/2814 ,  Y10S707/99943

摘要： An information management system within a client/server based computer system is disclosed. The information management system manages information as to the dynamic locations and continuous changes relating to services offered within the computer system. The information management system utilizes a service point map (SPM) that monitors such changes. The SPM tracks changes relating to services, sphere, location, port, and epoch value. The SPM may be hierarchical in nature. Parallel or duplicate services may also exist within the system.

摘要翻译： 公开了一种基于客户/服务器的计算机系统内的信息管理系统。 信息管理系统管理关于在计算机系统内提供的服务的动态位置和连续变化的信息。 信息管理系统利用监视这些变化的服务点映射（SPM）。 SPM跟踪与服务，球体，位置，端口和时期值有关的变化。 SPM本质上可能是分层的。 系统中也可能存在并行或重复的服务。

公开(公告)号：US07334038B1

公开(公告)日：2008-02-19

申请号：US09542602

申请日：2000-04-04

申请人： James J. Crow ,  Dennis L. Parker

发明人： James J. Crow ,  Dennis L. Parker

IPC分类号： G06F15/16

CPC分类号： G06F9/5055

摘要： Services are provided in an architecture utilizing a framework of standardized interconnection mechanisms that allow for the dynamic addition of new services that meet rules for the distributed services network. Likewise, new agents may readily be added to the network. The network architecture is composed of agent software at the broadband subscriber endpoint in conversation with server software at the service provider location. Under the present architecture, certain minimum service functionality is provided to any subscriber by way of a registration service for new subscribers, a login service for existing subscribers, subscriber profile services, connection services and plug-in management services. Through this network, a subscriber can access these services as well as additional services that are dynamically added to the network.

摘要翻译： 在使用标准化互连机制框架的架构中提供服务，允许动态添加满足分布式服务网络规则的新服务。 同样，新的代理可以容易地添加到网络中。 网络架构由宽带用户端点的代理软件组成，与服务提供商位置的服务器软件对话。 在现有架构下，通过新用户的注册服务，现有用户的登录服务，用户简档服务，连接服务和插件管理服务，向任何用户提供某些最低服务功能。 通过该网络，用户可以访问这些服务以及动态添加到网络的附加服务。

公开(公告)号：US20130158384A1

公开(公告)日：2013-06-20

申请号：US13769917

申请日：2013-02-19

申请人： Eun-Kee Jeong ,  Dennis L. Parker ,  Kim Seong-Eun Choi ,  Evgueni G. Kholmovski

发明人： Eun-Kee Jeong ,  Dennis L. Parker ,  Kim Seong-Eun Choi ,  Evgueni G. Kholmovski

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  G01R33/4806 ,  G01R33/5615 ,  G01R33/5616 ,  G01R33/56341 ,  G01R33/56509 ,  G01R33/56536 ,  G01R33/5676

摘要： Methods and apparatus for operating an MRI system is provided. The disclosure provides a diffusion-prepared driven-equilibrium preparation for an imaging volume and acquiring 3-dimensional k-space data from said prepared volume by a plurality of echoplanar readouts of stimulated echoes. An excitation radio-frequency signal and first and second inversion RF signals are provided to define a field-of-view (FOV).

摘要翻译： 提供了用于操作MRI系统的方法和装置。 本公开提供了用于成像体积的扩散制备的驱动平衡准备并且通过多个受激回波的回波平面读出从所述准备的体积获取三维k空间数据。 激励射频信号和第一和第二反转RF信号被提供以定义视野（FOV）。

公开(公告)号：USRE43225E1

公开(公告)日：2012-03-06

申请号：US12249583

申请日：2008-10-10

申请人： Dennis L. Parker ,  Andrew L. Alexander ,  John A. Roberts ,  Brian E. Chapman

发明人： Dennis L. Parker ,  Andrew L. Alexander ,  John A. Roberts ,  Brian E. Chapman

IPC分类号： G06K9/00

CPC分类号： G06T11/008 ,  G06T7/11 ,  G06T2207/10072 ,  G06T2207/30101 ,  G06T2211/404

摘要： A method and system are disclosed for generating enhanced images of multiple dimensional data using a depth-buffer segmentation process. The method and system operate in a computer system modify the image by generating a reduced-dimensionality image data set from a multidimensional image by formulating a set of projection paths through image points selected from the multidimensional image, selecting an image point along each projection path, analyzing each image point to determine spatial similarities with at least one other point adjacent to the selected image point in a given dimension, and grouping the image point with the adjacent point or spatial similarities between the points is found thereby defining the data set.

摘要翻译： 公开了一种使用深度缓冲器分割过程来生成多维数据的增强图像的方法和系统。 该方法和系统在计算机系统中操作，通过从多维图像中选择一个图像点，通过从多维图像中选择一个图像点，通过制定一组投影路径，从多维图像生成缩小维度图像数据来修改图像， 分析每个图像点以确定与给定维度中与所选图像点相邻的至少另一个点的空间相似性，并且找到图像点与点之间的相邻点或空间相似性，从而定义数据集。

公开(公告)号：US20090198834A1

公开(公告)日：2009-08-06

申请号：US12060687

申请日：2008-04-01

申请人： James J. Crow ,  Dennis L. Parker

发明人： James J. Crow ,  Dennis L. Parker

IPC分类号： G06F15/173 ,  G06F15/16

CPC分类号： H04L67/16 ,  H04L67/1002 ,  H04L67/1021 ,  H04L67/1029 ,  H04L67/1031 ,  H04L67/1038 ,  H04L67/2814 ,  Y10S707/99943

摘要： An information management system within a client/server based computer system is disclosed. The information management system manages information as to the dynamic locations and continuous changes relating to services offered within the computer system. The information management system utilizes a service point map (SPM) that monitors such changes. The SPM tracks changes relating to services, sphere, location, port, and epoch value. The SPM may be hierarchical in nature. Parallel or duplicate services may also exist within the system.

摘要翻译： 公开了一种基于客户/服务器的计算机系统内的信息管理系统。 信息管理系统管理关于在计算机系统内提供的服务的动态位置和连续变化的信息。 信息管理系统利用监视这些变化的服务点映射（SPM）。 SPM跟踪与服务，球体，位置，端口和时期值有关的变化。 SPM本质上可能是分层的。 系统中也可能存在并行或重复的服务。

公开(公告)号：US06674894B1

公开(公告)日：2004-01-06

申请号：US09959236

申请日：2001-10-16

申请人： Dennis L. Parker ,  Andrew L. Alexander ,  John A. Roberts ,  Brian E. Chapman

发明人： Dennis L. Parker ,  Andrew L. Alexander ,  John A. Roberts ,  Brian E. Chapman

IPC分类号： G06K900

CPC分类号： G06T11/008 ,  G06T7/11 ,  G06T2207/10072 ,  G06T2207/30101 ,  G06T2211/404

摘要： A method and system are disclosed for generating enhanced images of multiple dimensional data using a depth-buffer segmentation process. The method and system operate in a computer system modify the image by generating a reduced-dimensionality image data set from a multidimensional image by formulating a set of projection paths through image points selected from the multidimensional image, selecting an image point along each projection path, analyzing each image point to determine spatial similarities with at least one other point adjacent to the selected image point in a given dimension, and grouping the image point with the adjacent point or spatial similarities between the points is found thereby defining the data set.

摘要翻译： 公开了一种使用深度缓冲器分割过程来生成多维数据的增强图像的方法和系统。 该方法和系统在计算机系统中操作，通过从多维图像中选择一个图像点，通过从多维图像中选择一个图像点，通过制定一组投影路径，从多维图像生成缩小维度图像数据来修改图像， 分析每个图像点以确定与给定维度中与所选图像点相邻的至少另一个点的空间相似度，并且找到图像点与点之间的相邻点或空间相似性，从而定义数据集。

公开(公告)号：US5644646A

公开(公告)日：1997-07-01

申请号：US286523

申请日：1994-08-05

申请人： Yiping Du ,  Dennis L. Parker

发明人： Yiping Du ,  Dennis L. Parker

IPC分类号： G06T5/00 ,  G06K9/00

CPC分类号： G06T5/008 ,  G06T5/20 ,  G06T5/50 ,  G06T2200/04 ,  G06T2207/10088 ,  G06T2207/20056 ,  G06T2207/30101

摘要： An MRI system includes an MR cylinder, a radio frequency (RF) coil (or antenna), preliminary processing circuitry, and a computer processing system. The RF receiver produces an electrical signal to the preliminary processing circuitry representative of the sensed magnetic field. The preliminary processing circuitry provides a measurement data signal S (which is in the frequency domain) to the computer processing system, which includes a computer processor and a memory. The computer processor stores measurement data signal S as a data matrix M.sub.2 in a larger data matrix M.sub.3 that contains zero values in memory locations surrounding data matrix M.sub.2. This is referred to as zero-padding. The computer processor performs (zero-padded) Fourier transformation on data matrix M.sub.3 to produce an interpolated image data matrix I.sub.D. Interpolated image data matrix I.sub.D is processed through enhancement filtering to provide an enhanced image data matrix I.sub.E that has improved visibility of vessels. The filtering may be performed by a variety of filters including a max-min SD filter or a cross-section filter.

摘要翻译： MRI系统包括MR气缸，射频（RF）线圈（或天线），初步处理电路和计算机处理系统。 RF接收机产生代表感测磁场的初步处理电路的电信号。 初步处理电路向包括计算机处理器和存储器的计算机处理系统提供测量数据信号S（其在频域中）。 计算机处理器将测量数据信号S作为数据矩阵M2存储在包含数据矩阵M2周围的存储单元中的零值的较大数据矩阵M3中。 这被称为零填充。 计算机处理器对数据矩阵M3执行（零填充）傅立叶变换以产生内插图像数据矩阵ID。 内插图像数据矩阵ID通过增强滤波处理，以提供增强的图像数据矩阵IE，其改善了容器的可视性。 滤波可以由各种滤波器执行，包括最大最小SD滤波器或截面滤波器。

公开(公告)号：US5167232A

公开(公告)日：1992-12-01

申请号：US563987

申请日：1990-08-07

申请人： Dennis L. Parker ,  Duane D. Blatter

发明人： Dennis L. Parker ,  Duane D. Blatter

IPC分类号： G01R33/54 ,  G01R33/563

CPC分类号： G01R33/563 ,  G01R33/4835 ,  G01R33/56333

摘要： A method for acquiring image data for three dimensional magnetic resonance angiography using magnitude contrast, ("time-of-flight") imaging techniques allowing for the arbitrary offset of a slab or slabs in a sample, and allowing for the acquisition of multiple thin overlapping slabs using the steps of: selecting an image area on a sample as a one or more thin slabs; applying magnetic gradients to a sample in a logical x, y, and z coordinate system by use of a magetic resonance apparatus; applying radio frequency pulses to the image area within the sample; shifting the slab or slabs (overlapping the slab image area) by rotating the radio frequency pulse for the shifted (overlapping) slab or slabs.

摘要翻译： 一种采用大小对比度（“飞行时间”）成像技术获取三维磁共振血管造影图像数据的方法，允许样本中板坯或板坯的任意偏移，并允许采集多个薄重叠 使用以下步骤的板坯：将样品上的图像区域选择为一个或多个薄板坯; 通过使用磁共振装置将磁梯度施加到逻辑x，y和z坐标系中的样本; 将射频脉冲施加到样本内的图像区域; 通过旋转移动（重叠）板或板的射频脉冲来移动板或板（与平板图像区域重叠）。