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公开(公告)号：US20130256559A1
公开(公告)日：2013-10-03
申请号：US13435792
申请日：2012-03-30
申请人： Scott David Wollenweber , Bruce Collick , Anton Linz , Charles Stearns , William Peterson , Laura Armstrong
发明人： Scott David Wollenweber , Bruce Collick , Anton Linz , Charles Stearns , William Peterson , Laura Armstrong
IPC分类号： G01N21/00
CPC分类号： G01T1/169 , G01R33/481
摘要： A target object for aligning a multi-modality imaging system includes a body having a cavity therein, a first imaging source being disposed within the cavity, the first imaging source including a body having a cavity defined therein and an emission responsive material disposed within the first imaging source cavity, the first imaging source having a first shape, and a second imaging source being disposed within the cavity, the second imaging source including a body having a cavity defined therein and a magnetic resonance responsive material disposed within the second imaging source cavity, the second imaging source having a second shape that is different than the first shape. A method of aligning a multi-modality imaging system is also provided.
摘要翻译： 用于对准多模态成像系统的目标物体包括其中具有空腔的主体，第一成像源设置在空腔内，第一成像源包括具有限定在其中的空腔的主体和设置在第一 成像源腔，第一成像源具有第一形状，第二成像源设置在空腔内，第二成像源包括具有限定在其中的空腔的主体和设置在第二成像源腔内的磁共振响应材料， 所述第二成像源具有与所述第一形状不同的第二形状。 还提供了一种对准多模态成像系统的方法。
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公开(公告)号：US08969829B2
公开(公告)日：2015-03-03
申请号：US13435792
申请日：2012-03-30
申请人： Scott David Wollenweber , Bruce Collick , Anton Linz , Charles Stearns , William Peterson , Laura Armstrong
发明人： Scott David Wollenweber , Bruce Collick , Anton Linz , Charles Stearns , William Peterson , Laura Armstrong
IPC分类号： G01N21/00
CPC分类号： G01T1/169 , G01R33/481
摘要： A target object for aligning a multi-modality imaging system includes a body having a cavity therein, a first imaging source being disposed within the cavity, the first imaging source including a body having a cavity defined therein and an emission responsive material disposed within the first imaging source cavity, the first imaging source having a first shape, and a second imaging source being disposed within the cavity, the second imaging source including a body having a cavity defined therein and a magnetic resonance responsive material disposed within the second imaging source cavity, the second imaging source having a second shape that is different than the first shape. A method of aligning a multi-modality imaging system is also provided.
摘要翻译： 用于对准多模态成像系统的目标物体包括其中具有空腔的主体，第一成像源设置在空腔内，第一成像源包括具有限定在其中的空腔的主体和设置在第一 成像源腔，第一成像源具有第一形状，第二成像源设置在空腔内，第二成像源包括具有限定在其中的空腔的主体和设置在第二成像源腔内的磁共振响应材料， 所述第二成像源具有与所述第一形状不同的第二形状。 还提供了一种对准多模态成像系统的方法。
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13.发明申请Method and system for normalization of a positron emission tomography system 有权正电子发射断层扫描系统的归一化方法和系统公开(公告)号：US20050253076A1
公开(公告)日：2005-11-17
申请号：US10843503
申请日：2004-05-11
CPC分类号： G01T1/2985 , G01T1/171
摘要： A method and system for normalization of a positron emission tomography system are provided. The method includes determining a plurality of block busy fractions for a positron emission tomography system and using the determined block busy fractions to provide correction during normalization of the positron emission tomography system.
摘要翻译： 提供了正电子发射断层摄影系统的归一化方法和系统。 该方法包括确定用于正电子发射断层摄影系统的多个块繁忙分数，并且使用确定的块繁忙分数来在正电子发射断层摄影系统的归一化期间提供校正。
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公开(公告)号：US20070131858A1
公开(公告)日：2007-06-14
申请号：US11301149
申请日：2005-12-12
IPC分类号： G01D18/00
CPC分类号： A61B6/032 , A61B6/037 , G01T1/1611 , G06F19/00
摘要： A method for correcting emission data from Positron Emission Tomography (PET) or SPECT includes generating a plurality of computed tomography (CT) image data, selecting a portion of the CT image data, processing the selected CT data to generate a plurality of attenuation correction (CTAC) factors at the appropriate energy of the emission data, weighting the CTAC factors to generate an emission attenuation correction map wherein the weights are determined based on the axial location and the slice thickness of the CT data and the axial location and the slice thickness of the PET or SPECT data, and utilizing the generated attenuation correction map to generate an attenuation corrected PET image.
摘要翻译： 用于校正来自正电子发射断层扫描（PET）或SPECT的发射数据的方法包括生成多个计算机断层摄影（CT）图像数据，选择CT图像数据的一部分，处理所选择的CT数据以产生多个衰减校正 CTAC）因子在发射数据的适当能量下，对CTAC因子加权以产生发射衰减校正图，其中基于CT数据的轴向位置和切片厚度以及轴向位置和切片厚度来确定权重 PET或SPECT数据，并且利用所生成的衰减校正图来生成衰减校正的PET图像。
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公开(公告)号：US20050267348A1
公开(公告)日：2005-12-01
申请号：US10858137
申请日：2004-06-01
摘要： A method and apparatus for imaging a patient is provided. The method includes receiving patient information, automatically selecting an imaging protocol based on the received information, and performing an imaging scan of the patient using the automatically selected imaging protocol.
摘要翻译： 提供了一种用于使患者成像的方法和装置。 该方法包括接收患者信息，基于接收到的信息自动选择成像协议，以及使用自动选择的成像协议对患者进行成像扫描。
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公开(公告)号：US06714674B1
公开(公告)日：2004-03-30
申请号：US09070486
申请日：1998-04-30
申请人： Charles Stearns
发明人： Charles Stearns
IPC分类号： G06K900
CPC分类号： G06T5/009 , A61B6/581 , G06T5/40 , G06T2207/10116
摘要： A method is provided for converting values representative of pixel intensities from an input dynamic range to an output dynamic range. The input dynamic range is determined by acquisition circuitry, while the output range is determined by display or output devices or circuitry. A histogram of the input values is generated, and a lower limit value for the useful portion of the input range is identified from the histogram. An upper limit of the useful input range is then identified based on a log-transformed histogram computed from the original histogram, and on a threshold value located based on the lower limit value. Conversion of the pixel values is then performed by reference to the lower and upper limit values. The technique facilitates compensation for variations in utilization of the input dynamic range, and appropriately scales the input range utilized to the available output range.
摘要翻译： 提供一种用于将表示像素强度的值从输入动态范围转换为输出动态范围的方法。 输入动态范围由采集电路确定，而输出范围由显示或输出设备或电路决定。 生成输入值的直方图，并根据直方图识别输入范围的有用部分的下限值。 然后基于从原始直方图计算的对数变换直方图以及基于下限值的阈值来识别有用输入范围的上限。 然后通过参考下限和上限值来执行像素值的转换。 该技术有助于补偿输入动态范围的利用率变化，并将所使用的输入范围适当地缩放到可用的输出范围。
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公开(公告)号：US5418755A
公开(公告)日：1995-05-23
申请号：US290671
申请日：1994-08-12
申请人： Andrea Nguyen , Joe Yeun , Charles Stearns
发明人： Andrea Nguyen , Joe Yeun , Charles Stearns
CPC分类号： G11C8/00 , G06F12/0897 , G11C7/00
摘要： A write buffer having selective flush is disclosed. The write buffer has address buffers and associated data buffers and comparators. During a "sneak read" operation, the address of the read operation is compared to the address signals stored in each of the address buffers. If a match is found, the read operation is temporarily suspended for only as long as the matched address remains stored in the write buffer. In a further improvement, the overhead associated with each match can be minimized to one write operation for each match before the matched address and data signals are written out of the write buffer.
摘要翻译： 公开了一种具有选择性冲洗的写缓冲器。 写缓冲区具有地址缓冲区和相关数据缓冲区和比较器。 在“潜行读取”操作期间，将读取操作的地址与存储在每个地址缓冲器中的地址信号进行比较。 如果发现匹配，只要匹配的地址保持存储在写缓冲区中，读操作就被暂停。 在进一步的改进中，在将匹配的地址和数据信号写入写入缓冲器之前，与每个匹配相关联的开销可以被最小化为每个匹配的一个写入操作。
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18.发明申请Method and system for normalization of a positron emission tomography system 失效正电子发射断层扫描系统的归一化方法和系统公开(公告)号：US20050242288A1
公开(公告)日：2005-11-03
申请号：US10835861
申请日：2004-04-30
申请人： Scott Wollenweber , Charles Stearns
发明人： Scott Wollenweber , Charles Stearns
CPC分类号： G01T1/2985
摘要： A method and system for normalization of a positron emission tomography system is provided. The method includes acquiring three-dimensional normalization scan data from a positron emission tomography system with at least one septum and determining a down-sampling factor based in part on the configuration of the at least one septum. The method further includes modifying the three-dimensional normalization scan data using the down-sampling factor.
摘要翻译： 提供了正电子发射断层摄影系统的归一化方法和系统。 该方法包括从具有至少一个隔膜的正电子发射断层摄影系统获取三维归一化扫描数据，并且部分地基于所述至少一个隔膜的配置来确定下采样因子。 该方法还包括使用下采样因子修改三维归一化扫描数据。
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公开(公告)号：US5204829A
公开(公告)日：1993-04-20
申请号：US911854
申请日：1992-07-10
申请人： Allen Lyu , Charles Stearns
发明人： Allen Lyu , Charles Stearns
IPC分类号： G06F7/57
CPC分类号： G06F7/57 , G06F2207/3884 , G06F7/483
摘要： A pipelined floating point multiplier is disclosed having the capability of interleaving floating point multiplication with iterative floating point operations (calculations), such as division and square-root taking, by making use of idle stages (pipeline bubbles). This is accomplished with minimal additional circuitry over that required for conventional floating-point multipliers, and does not adversely affect the speed of iterative calculations. Method and apparatus are disclosed.
摘要翻译： 公开了一种流水线浮点乘法器，其具有通过利用空转阶段（管道气泡）来交错浮点乘法与迭代浮点运算（计算）的能力，例如除法和平方根采取。 这是通过传统浮点乘法器所需的最小额外电路来实现的，并且不会不利地影响迭代计算的速度。 公开了方法和装置。
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