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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
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。
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12.发明授权
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）。
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公开(公告)号：US09057767B2
公开(公告)日：2015-06-16
申请号：US13465864
申请日：2012-05-07
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。
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公开(公告)号：US08406849B2
公开(公告)日：2013-03-26
申请号：US11732382
申请日：2007-04-02
IPC分类号： A61B5/05
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）。
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公开(公告)号：US20120280685A1
公开(公告)日：2012-11-08
申请号：US13465864
申请日：2012-05-07
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。
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公开(公告)号：US06871345B1
公开(公告)日：2005-03-22
申请号：US09542274
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： G06F9/445
CPC分类号： G06F9/44526 , G06F8/656
摘要： A system and method is described for managing plugin program components through encapsulation in a self managing agent that supports introspection for installation. An agent evaluator engine at the host machine interrogates the introspective interface for the agent to determine what resources are required by the plugin. In addition, the engine determines what effect the plugin will have on the host system, and invokes the installation logic which may be contained in the agent. Using the introspective mechanism and installation logic, any changes in the plugin (such as revisions) and the associated dependency changes can be readily accommodated since only a single base of information and installation logic, that which is contained within the enclosing agent, requires modification.
摘要翻译： 描述了一种系统和方法，用于通过在支持反思安装的自我管理代理中进行封装来管理插件程序组件。 主机上的代理评估器引擎询问代理的内省接口以确定插件需要哪些资源。 此外，引擎确定插件对主机系统的影响，并调用代理中可能包含的安装逻辑。 使用内省机制和安装逻辑，插件中的任何更改（如修订版本）和关联的依赖关系更改都可以轻松实现，因为只有包含在封装代理中的单个信息和安装逻辑基础需要修改。
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公开(公告)号：US5732150A
公开(公告)日：1998-03-24
申请号：US530435
申请日：1995-09-19
CPC分类号： G01N1/312
摘要： A method and system for segmenting images of samples stained with two, three, or more stains accurately and reliably into multiple single-color images which represent the mass density of the stain at each position in the sample. The system includes a computer-controlled microscope and CCD camera, and at least one computer which includes data storage media for storing image data and which runs software for controlling image acquisition and analysis. To analyze tissue stained with N stains, images must be obtained at N different wavelengths, from multiply stained and singly stained samples. Relative stain mass densities are calculated with the use of the ratio of absorptivities measured at different wavelengths. The theoretical and practical basis for implementing the method with two, three, or more stains is presented. A method for selecting the wavelengths which provide optimal image accuracy and resolution is also provided.
摘要翻译： 一种将两个，三个或更多染色的样品的图像的图像精确可靠地分割成多个单色图像的方法和系统，其表示样品中每个位置处的染色质量密度。 该系统包括计算机控制的显微镜和CCD相机，以及至少一台计算机，其包括用于存储图像数据的数据存储介质，并且运行用于控制图像采集和分析的软件。 为了分析用N染色染色的组织，必须从N个不同波长获得图像，从多次染色和单染色样品。 使用在不同波长下测量的吸光度比计算相对染色质量密度。 介绍了实施二，三或更多污渍方法的理论和实践依据。 还提供了一种选择提供最佳图像精度和分辨率的波长的方法。
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公开(公告)号：US09028470B2
公开(公告)日：2015-05-12
申请号：US13525082
申请日：2012-06-15
CPC分类号： A61N7/02 , A61B2018/00404 , A61B2018/00434 , A61B2018/00511 , A61B2018/00577 , A61B2018/00791 , A61B2090/374
摘要： A method of treating hypertension in a mammal is described, including: by focused sound energy, heating at least one nerve at a surface of a renal artery in a mammal; during the heating and by magnetic resonance imaging, repeatedly determining thermal levels in each of first and second volumetric zones of a region that includes at least a portion of the surface, the second zone being adjacent to the first zone; after determining that an indicium of a thermal level in the first zone exceeds a first threshold, and upon determining that an indicium of a thermal level in the second zone exceeds a second threshold, ceasing the heating of the at least one nerve for at least three months; and as a result of the heating, lowering a blood pressure in the mammal.
摘要翻译： 描述了一种治疗哺乳动物高血压的方法，包括：通过聚焦的声能，在哺乳动物的肾动脉表面加热至少一个神经; 在加热和磁共振成像期间，重复地确定包括表面的至少一部分的区域的第一和第二容积区域中的每一个中的热水平，第二区域与第一区域相邻; 在确定第一区中的热水平的标记超过第一阈值之后，并且在确定第二区中的热水平的标记超过第二阈值时，停止对至少一个神经的加热至少三个 几个月 并且作为加热的结果，降低了哺乳动物的血压。
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19.发明授权公开(公告)号：US08140640B2
公开(公告)日：2012-03-20
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： G06F15/16
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。
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20.发明授权Method and system for parallel reconstruction in the K-space domain for application in imaging systems 有权用于K-空间域并行重建的方法和系统用于成像系统公开(公告)号：US07840045B2
公开(公告)日：2010-11-23
申请号：US11737527
申请日：2007-04-19
申请人： Junyu Guo , Eugene G. Kholmovski , Ling Zhang , Dennis L. Parker
发明人： Junyu Guo , Eugene G. Kholmovski , Ling Zhang , Dennis L. Parker
IPC分类号： G06K9/00
CPC分类号： G01R33/5611
摘要： A method of performing parallel image reconstruction of undersampled image data in k-space. A defined partitioning of a k-space region into a plurality of segments is received. A segment of the plurality of segments is identified wherein data is sampled at less than a Nyquist rate. First imaging data is sampled at the Nyquist rate. A reconstruction coefficient is calculated for at least a portion of the identified segment using the sampled first imaging data. Second imaging data is sampled at less than the Nyquist rate. A value for a missing k-space sample in the identified segment is predicted using the calculated reconstruction coefficient and the sampled second imaging data. An image of the image area is defined using the predicted value and the received second dataset.
摘要翻译： 在k空间中执行欠采样图像数据的并行图像重构的方法。 接收将k空间区域定义为多个段的划分。 识别多个片段中的片段，其中以小于奈奎斯特速率采样数据。 以奈奎斯特速率对第一成像数据进行采样。 使用所采样的第一成像数据，对识别出的片段的至少一部分计算重建系数。 第二个成像数据以低于奈奎斯特速率进行采样。 使用计算的重建系数和采样的第二成像数据来预测识别的段中缺少的k空间样本的值。 使用预测值和接收到的第二数据集来定义图像区域的图像。
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