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1.发明授权Magnetic resonance system, receiver & method of generating detecting and digitizing analog MR signals solely within the MR shielded environment 有权磁共振系统，接收器和仅在MR屏蔽环境内产生检测和数字化模拟MR信号的方法公开(公告)号：US07378844B2
公开(公告)日：2008-05-27
申请号：US10955629
申请日：2004-09-30
IPC分类号： G01V3/00
CPC分类号： G01R33/283 , G01R33/3621 , G01R33/3692
摘要： A magnetic resonance (MR) system and method for generating information about an object is provided. The MR system comprises at least one MR detector configured to sense a plurality of signals within a shielded environment and a digitizing circuit configured for digitizing the analog signals to generate digital signals. The MR detector, digitizing circuit is located within a shielded environment. The system further comprises a first transmission element configured for transmitting the plurality of digital signals to a plurality of electronic devices.
摘要翻译： 提供了一种用于产生关于物体的信息的磁共振（MR）系统和方法。 MR系统包括至少一个MR检测器，其被配置为感测屏蔽环境内的多个信号;以及数字化电路，被配置为数字化模拟信号以产生数字信号。 MR检测器，数字化电路位于屏蔽环境中。 该系统还包括被配置为将多个数字信号发送到多个电子设备的第一传输元件。
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公开(公告)号：US20120163557A1
公开(公告)日：2012-06-28
申请号：US12977400
申请日：2010-12-23
申请人： Jiang Hsieh , Naveen Stephan Chandra , Xiaoye Wu , Suresh Narayanan , Dan Xu , Meghan Lynn Yue
发明人： Jiang Hsieh , Naveen Stephan Chandra , Xiaoye Wu , Suresh Narayanan , Dan Xu , Meghan Lynn Yue
IPC分类号： G01D18/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/4417 , A61B6/583
摘要： A method for calibrating a medical imaging system includes performing an initial calibration of the imaging system, at a manufacturing site fabricating the imaging system, using a plurality of phantoms, shipping one of the phantoms to an installation site installing the imaging system, and performing a final calibration, at an installation site of the imaging system, using the shipped phantom. A set of calibration phantoms is also described herein.
摘要翻译： 用于校准医学成像系统的方法包括在制造成像系统的制造现场使用多个幻影来执行成像系统的初始校准，将一个幻影运送到安装成像系统的安装地点，以及执行 在成像系统的安装地点使用运送的幻影进行最终校准。 本文还描述了一组校准模体。
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公开(公告)号：US07095354B2
公开(公告)日：2006-08-22
申请号：US11203493
申请日：2005-08-12
申请人： Daniel David Harrison , Naresh Kesavan Rao , Shobhana Mani , Naveen Stephan Chandra , Oliver Richard Astley , Donald Thomas McGrath
发明人： Daniel David Harrison , Naresh Kesavan Rao , Shobhana Mani , Naveen Stephan Chandra , Oliver Richard Astley , Donald Thomas McGrath
IPC分类号： H03M1/36
CPC分类号： H03M1/0609 , H03M1/1215 , H03M1/141 , H03M1/60
摘要： A multi-channel analog to digital conversion circuit and methods thereon are provided. The multi-channel analog to digital conversion cirucit comprises a plurality of linearized channels wherein each channel comprises a multi-stage pipelined charge-to-digital converter and an integrating capacitor within each stage of the multi-stage converter wherein analog residue is processed by subsequent analog to digital converter stages. Each stage of respective linearized channels is configured for calculating gain and offset for each stage in the channel and such gain and offset is used in subsequent integration periods.
摘要翻译： 提供了多通道模数转换电路及其方法。 多通道模数转换电路包括多个线性化通道，其中每个通道包括多级流水线电荷数字转换器和在多级转换器的每个级内的积分电容器，其中模拟残余物由后续处理 模数转换器级。 各个线性化信道的每个级被配置为用于计算信道中每个级的增益和偏移，并且在随后的积分周期中使用这种增益和偏移。
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公开(公告)号：US08983163B2
公开(公告)日：2015-03-17
申请号：US13586337
申请日：2012-08-15
CPC分类号： H04N19/136 , A61B6/035 , A61B6/4028 , A61B6/56
摘要： A method for reducing bandwidth required for transmission of data in a device having two portions rotating with respect to one another. The first portion includes a data acquisition system (DAS) having a charge-to-digital converter and a digital signal processor (DSP) configured to receive and compress digital data from the charge-to-digital processor. The second portion includes a computer configured to receive data from the DAS. The DAS and computer are communicatively coupled via a slip ring having a finite transmission bandwidth. The computer is configured to reconstruct and display an image using compressed data. The method includes using the DAS to compress scan data to a predetermined number of mantissa bits and a predetermined number of exponent bits, transmitting the compressed data from the first portion to the second portion across the slip ring, and using the transmitted compressed data to reconstruct and display an image of an object.
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公开(公告)号：US20120183108A1
公开(公告)日：2012-07-19
申请号：US13009469
申请日：2011-01-19
IPC分类号： H04B1/10
CPC分类号： H04B1/10
摘要： Systems and methods for multichannel noise reduce are provided. One method includes acquiring a multichannel signal, obtaining a noise correlation between a plurality of channels of the multichannel signal, and obtaining a signal characteristic in each of the plurality of channels. The method also includes removing signal noise based on (i) the correlated noise and (ii) at least one of an uncorrelated noise in each channel or the obtained signal characteristic in each channel.
摘要翻译： 提供了多通道噪声减少的系统和方法。 一种方法包括获取多信道信号，获得多信道信号的多个信道之间的噪声相关性，并获得多个信道中的每个信道中的信号特性。 该方法还包括基于（i）相关噪声和（ii）每个信道中的不相关噪声中的至少一个或每个信道中获得的信号特性来去除信号噪声。
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公开(公告)号：US08396273B2
公开(公告)日：2013-03-12
申请号：US12650116
申请日：2009-12-30
申请人： Baojun Li , Naveen Stephan Chandra , Jed Douglas Pack , Jiang Hsieh , Xiaoye Wu , Mary Sue Kulpins
发明人： Baojun Li , Naveen Stephan Chandra , Jed Douglas Pack , Jiang Hsieh , Xiaoye Wu , Mary Sue Kulpins
IPC分类号： G06K9/00
CPC分类号： G06T11/008 , G06T2211/408
摘要： A method is provided that includes acquiring a first set of image data from X-rays produced at a first energy level and a second set of image data from X-rays produced at a second energy level. The method includes generating a first noise mask for a first basis material and a second noise mask for a second basis material and removing pixels corresponding to cross contaminating structural information from the first noise mask and the second noise mask. The method includes processing a first materially decomposed image generated from the first set of image data and the second set of digital data using the second noise mask after removal of the cross contaminating structural information and processing a second MD image generated from the first set of image data and the second set of digital data using the first noise mask after removal of the cross contaminating structural information.
摘要翻译： 提供了一种方法，其包括从在第二能量级产生的X射线以从第一能量级产生的X射线和第二组图像数据获取第一组图像数据。 该方法包括为第一基材生成第一噪声掩模和第二基材的第二噪声掩模，并从第一噪声掩模和第二噪声掩模去除对应于交叉污染结构信息的像素。 该方法包括在去除交叉污染的结构信息之后处理从第一组图像数据和第二组数字数据生成的第一物理分解图像，并且处理从第一组图像生成的第二MD图像 数据和第二组数字数据，在去除交叉污染结构信息之后使用第一噪声掩模。
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7.发明申请SYSTEM AND METHOD OF ACQUIRING COMPUTED TOMOGRAPHY DATA USING A MULTI-ENERGY X-RAY SOURCE 审中-公开使用多能量X射线源获取计算机图像数据的系统和方法公开(公告)号：US20130003912A1
公开(公告)日：2013-01-03
申请号：US13174485
申请日：2011-06-30
申请人： Bruno Kristiaan Bernard De Man , Jiang Hsieh , Naveen Stephan Chandra , Jiahua Fan , Jed Douglas Pack
发明人： Bruno Kristiaan Bernard De Man , Jiang Hsieh , Naveen Stephan Chandra , Jiahua Fan , Jed Douglas Pack
摘要： The subject matter disclosed herein relates to X-ray imaging systems, and more specifically, to multi-energy computed tomography (CT) X-ray imaging systems. In an embodiment, a multi-energy computed tomography (CT) imaging system includes an X-ray source that emits X-rays upon the application of a low stable bias, a high stable bias, and transitional biases between the low stable bias and the high stable bias. The imaging system also includes an X-ray detector configured to produce an electrical signal corresponding to the intensity of the X-rays emitted by the X-ray source that reach the X-ray detector. The imaging system also includes data processing circuitry configured to acquire a first set of data corresponding to the electrical signal produced by the X-ray detector only when the low stable bias or the high stable bias is applied to the X-ray source. The imaging system also includes a processor configured to process the first set of acquired data and construct one or more multi-energy CT images.
摘要翻译： 本文公开的主题涉及X射线成像系统，更具体地，涉及多能计算机断层摄影（CT）X射线成像系统。 在一个实施例中，多能量计算机断层摄影（CT）成像系统包括在施加低稳定偏压，高稳定偏差以及低稳定偏压和低稳定偏差之间的过渡偏差时发射X射线的X射线源 高稳定偏差。 成像系统还包括：X射线检测器，被配置为产生对应于由X射线源发射的X射线的强度的电信号，该X射线到达X射线检测器。 成像系统还包括数据处理电路，其被配置为仅当低稳定偏压或高稳定偏压施加到X射线源时才获取对应于由X射线检测器产生的电信号的第一组数据。 成像系统还包括被配置为处理第一组获取的数据并构造一个或多个多能CT图像的处理器。
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公开(公告)号：US08260019B2
公开(公告)日：2012-09-04
申请号：US11893731
申请日：2007-08-17
IPC分类号： G06K9/00
CPC分类号： H04N19/136 , A61B6/035 , A61B6/4028 , A61B6/56
摘要： A method for reducing bandwidth required for transmission of data in a device having two portions rotating with respect to one another. The first portion includes a data acquisition system (DAS) having a charge-to-digital converter and a digital signal processor (DSP) configured to receive and compress digital data from the charge-to-digital processor. The second portion includes a computer configured to receive data from the DAS. The DAS and computer are communicatively coupled via a slip ring having a finite transmission bandwidth. The computer is configured to reconstruct and display an image using compressed data. The method includes using the DAS to compress scan data to a predetermined number of mantissa bits and a predetermined number of exponent bits, transmitting the compressed data from the first portion to the second portion across the slip ring, and using the transmitted compressed data to reconstruct and display an image of an object.
摘要翻译： 一种用于减少在具有相对于彼此旋转的部分的设备中传输数据所需的带宽的方法。 第一部分包括具有电荷数字转换器和数字信号处理器（DSP）的数据采集系统（DAS），数字信号处理器（DSP）被配置为从电荷到数字处理器接收和压缩数字数据。 第二部分包括被配置为从DAS接收数据的计算机。 DAS和计算机通过具有有限传输带宽的滑环进行通信耦合。 计算机被配置为使用压缩数据来重建和显示图像。 该方法包括使用DAS将扫描数据压缩到预定数量的尾数位和预定数量的指数位，将压缩数据从第一部分传送到穿过滑环的第二部分，并使用传输的压缩数据重建 并显示对象的图像。
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公开(公告)号：US20110158498A1
公开(公告)日：2011-06-30
申请号：US12650116
申请日：2009-12-30
申请人： Baojun Li , Naveen Stephan Chandra , Jed Douglas Pack , Jiang Hsieh , Xiaoye Wu , Mary Sue Kulpins
发明人： Baojun Li , Naveen Stephan Chandra , Jed Douglas Pack , Jiang Hsieh , Xiaoye Wu , Mary Sue Kulpins
IPC分类号： G06K9/62
CPC分类号： G06T11/008 , G06T2211/408
摘要： A method is provided that includes acquiring a first set of image data from X-rays produced at a first energy level and a second set of image data from X-rays produced at a second energy level. The method includes generating a first noise mask for a first basis material and a second noise mask for a second basis material and removing pixels corresponding to cross contaminating structural information from the first noise mask and the second noise mask. The method includes processing a first materially decomposed image generated from the first set of image data and the second set of digital data using the second noise mask after removal of the cross contaminating structural information and processing a second MD image generated from the first set of image data and the second set of digital data using the first noise mask after removal of the cross contaminating structural information.
摘要翻译： 提供了一种方法，其包括从在第二能量级产生的X射线以从第一能量级产生的X射线和第二组图像数据获取第一组图像数据。 该方法包括为第一基材生成第一噪声掩模和第二基材的第二噪声掩模，并从第一噪声掩模和第二噪声掩模去除对应于交叉污染结构信息的像素。 该方法包括在去除交叉污染的结构信息之后处理从第一组图像数据和第二组数字数据生成的第一物理分解图像，并且处理从第一组图像生成的第二MD图像 数据和第二组数字数据，在去除交叉污染结构信息之后使用第一噪声掩模。
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公开(公告)号：US20090046913A1
公开(公告)日：2009-02-19
申请号：US11893731
申请日：2007-08-17
IPC分类号： G06K9/00
CPC分类号： H04N19/136 , A61B6/035 , A61B6/4028 , A61B6/56
摘要： A method for reducing bandwidth required for transmission of data in a device having two portions rotating with respect to one another. The first portion includes a data acquisition system (DAS) having a charge-to-digital converter and a digital signal processor (DSP) configured to receive and compress digital data from the charge-to-digital processor. The second portion includes a computer configured to receive data from the DAS. The DAS and computer are communicatively coupled via a slip ring having a finite transmission bandwidth. The computer is configured to reconstruct and display an image using compressed data. The method includes using the DAS to compress scan data to a predetermined number of mantissa bits and a predetermined number of exponent bits, transmitting the compressed data from the first portion to the second portion across the slip ring, and using the transmitted compressed data to reconstruct and display an image of an object.
摘要翻译： 一种用于减少在具有相对于彼此旋转的部分的设备中传输数据所需的带宽的方法。 第一部分包括具有电荷数字转换器和数字信号处理器（DSP）的数据采集系统（DAS），数字信号处理器（DSP）被配置为从电荷到数字处理器接收和压缩数字数据。 第二部分包括被配置为从DAS接收数据的计算机。 DAS和计算机通过具有有限传输带宽的滑环进行通信耦合。 计算机被配置为使用压缩数据来重建和显示图像。 该方法包括使用DAS将扫描数据压缩到预定数量的尾数位和预定数量的指数位，将压缩数据从第一部分传送到穿过滑环的第二部分，并使用传输的压缩数据重建 并显示对象的图像。
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