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1. 发明授权

US07734004B2 Gain correction for a CT system 有权
标题翻译： CT系统的增益校正
公开(公告)号：US07734004B2
公开(公告)日：2010-06-08
申请号：US11851609
申请日：2007-09-07
申请人： Jongduk Baek , Norbert J. Pelc
发明人： Jongduk Baek , Norbert J. Pelc
IPC分类号： A61B6/00
CPC分类号： G06T11/005 , A61B6/032
摘要： A method for imaging unknown objects in a computed tomography (CT) system, comprising determining ray gain for a known object is provided. A CT reconstruction is performed with the known object to obtain reconstructed values. Ideal values are obtained for pixels of the known object. An error related to a difference between the reconstructed values and the ideal values is generated. A ray gain is estimated that reduces the error.
摘要翻译：提供了一种用于对计算机断层摄影（CT）系统中的未知物体进行成像的方法，包括确定已知物体的射线增益。使用已知对象执行CT重建以获得重建的值。为已知对象的像素获得理想值。产生与重建值和理想值之间的差异相关的误差。估计减少误差的射线增益。

2. 发明授权

US07860210B2 Data normalization in inverse geometry computed tomography system 有权
标题翻译：逆几何计算机断层扫描系统的数据归一化
公开(公告)号：US07860210B2
公开(公告)日：2010-12-28
申请号：US12273223
申请日：2008-11-18
申请人： Norbert J. Pelc , Jongduk Baek
发明人： Norbert J. Pelc , Jongduk Baek
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/583
摘要： A method for imaging an object in a computed tomography (CT) system with a plurality of sources comprising a first source and a second source, wherein the plurality of sources together with a detector array are mounted on a rotatable gantry, and wherein an intensity of the second source has unknown fluctuations is provided. Projection data is collected using the first source in a first gantry position. Projection data is collected using the second source in a second gantry position, wherein projection data from the first source in the first gantry position substantially overlaps projection data from the second source in the second gantry position. Data from the first source at the first gantry position is used to correct for source fluctuations of the second source at the second gantry position.
摘要翻译：一种用于在具有多个源的计算机断层摄影（CT）系统中对物体进行成像的方法，所述多个源包括第一源和第二源，其中所述多个源与检测器阵列一起安装在可旋转机架上，并且其中强度第二个来源提供了未知的波动。在第一台架位置使用第一源收集投影数据。在第二台架位置使用第二源收集投影数据，其中来自第一台架位置的第一源的投影数据在第二台架位置中基本上与来自第二源的投影数据重叠。来自第一台架位置处的第一源的数据用于校正第二机架位置处的第二源的源波动。

3. 发明申请

US20100124310A1 DATA NORMALIZATION IN INVERSE GEOMETRY COMPUTED TOMOGRAPHY SYSTEM 有权
标题翻译：反相几何计算机图像系统中的数据正规化
公开(公告)号：US20100124310A1
公开(公告)日：2010-05-20
申请号：US12273223
申请日：2008-11-18
申请人： Norbert J. Pelc , Jongduk Baek
发明人： Norbert J. Pelc , Jongduk Baek
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/583
摘要： A method for imaging an object in a computed tomography (CT) system with a plurality of sources comprising a first source and a second source, wherein the plurality of sources together with a detector array are mounted on a rotatable gantry, and wherein an intensity of the second source has unknown fluctuations is provided. Projection data is collected using the first source in a first gantry position. Projection data is collected using the second source in a second gantry position, wherein projection data from the first source in the first gantry position substantially overlaps projection data from the second source in the second gantry position. Data from the first source at the first gantry position is used to correct for source fluctuations of the second source at the second gantry position.
摘要翻译：一种用于在具有多个源的计算机断层摄影（CT）系统中对物体进行成像的方法，所述多个源包括第一源和第二源，其中所述多个源与检测器阵列一起安装在可旋转机架上，并且其中强度第二个来源提供了未知的波动。在第一台架位置使用第一源收集投影数据。在第二台架位置使用第二源收集投影数据，其中来自第一台架位置的第一源的投影数据在第二台架位置中基本上与来自第二源的投影数据重叠。来自第一机架位置处的第一源的数据用于校正第二机架位置处的第二源的源波动。

4. 发明申请

US20090067569A1 GAIN CORRECTION FOR A CT SYSTEM 有权
标题翻译： CT系统增益校正
公开(公告)号：US20090067569A1
公开(公告)日：2009-03-12
申请号：US11851609
申请日：2007-09-07
申请人： Jongduk Baek , Norbert J. Pelc
发明人： Jongduk Baek , Norbert J. Pelc
IPC分类号： A61B6/03 , G06K9/00
CPC分类号： G06T11/005 , A61B6/032
摘要： A method for imaging unknown objects in a computed tomography (CT) system, comprising determining ray gain for a known object is provided. A CT reconstruction is performed with the known object to obtain reconstructed values. Ideal values are obtained for pixels of the known object. An error related to a difference between the reconstructed values and the ideal values is generated. A ray gain is estimated that reduces the error.
摘要翻译：提供了一种用于对计算机断层摄影（CT）系统中的未知物体进行成像的方法，包括确定已知物体的射线增益。使用已知对象执行CT重建以获得重建的值。为已知对象的像素获得理想值。产生与重建值和理想值之间的差异相关的误差。估计减少误差的射线增益。

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