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1. 发明申请

US20130058450A1 METHOD AND APPARATUS FOR ADAPTIVE SCATTER CORRECTION 有权
标题翻译：自适应散射校正的方法和装置
公开(公告)号：US20130058450A1
公开(公告)日：2013-03-07
申请号：US13223803
申请日：2011-09-01
申请人： Xin Liu , Jiang Hsieh , Xiaoye Wu
发明人： Xin Liu , Jiang Hsieh , Xiaoye Wu
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/482 , A61B6/5282
摘要： A CT system includes a rotatable gantry having an opening to receive an object to be scanned, an x-ray source configured to project an x-ray beam toward the object having a primary intensity, a detector configured to detect high frequency electromagnetic energy passing through the object and output imaging data, and a data acquisition system (DAS) connected to the detector and configured to receive the imaging data. The system also includes a computer programmed to obtain image projection data of the object from the DAS, correct the projection data using a scatter function that is based at least on a known characteristic of the x-ray beam, and generate images using the corrected projection data.
摘要翻译： CT系统包括可旋转机架，其具有用于接收待扫描物体的开口，被配置为将X射线束投影到具有主要强度的物体的X射线源;检测器，被配置为检测经过的高频电磁能物体和输出成像数据，以及连接到检测器并被配置为接收成像数据的数据采集系统（DAS）。该系统还包括被编程为从DAS获得对象的图像投影数据的计算机，使用至少基于X射线束的已知特征的散射函数校正投影数据，并使用校正的投影产生图像数据。

2. 发明授权

US08483471B2 Method and system for scatter correction in X-ray imaging 有权
标题翻译： X射线成像中散射校正的方法和系统
公开(公告)号：US08483471B2
公开(公告)日：2013-07-09
申请号：US13174480
申请日：2011-06-30
申请人： Xiaoye Wu , Jiang Hsieh , Paavana Sainath , Xin Liu
发明人： Xiaoye Wu , Jiang Hsieh , Paavana Sainath , Xin Liu
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4085 , A61B6/4291 , A61B6/483 , A61B6/5205 , A61B6/5282
摘要： Approaches for deriving scatter information using inverse tracking of scattered X-rays is disclosed. In certain embodiments scattered rays are tracked from respective locations on a detector to a source of the X-ray radiation, as opposed to tracking schemes that proceed from the source to the detector. In one such approach, the inverse tracking is implemented using a density integrated volume that reduces the integration steps performed.
摘要翻译：公开了使用散射X射线的反向跟踪导出散射信息的方法。在某些实施例中，与从源到检测器进行的跟踪方案相反，散射光线从检测器上的相应位置跟踪到X射线辐射源。在一种这样的方法中，使用密度集成体积来实现逆追踪，其减少执行的集成步骤。

3. 发明授权

US09320477B2 Method and apparatus for adaptive scatter correction 有权
标题翻译：自适应散射校正的方法和装置
公开(公告)号：US09320477B2
公开(公告)日：2016-04-26
申请号：US13223803
申请日：2011-09-01
申请人： Xin Liu , Jiang Hsieh , Xiaoye Wu
发明人： Xin Liu , Jiang Hsieh , Xiaoye Wu
IPC分类号： A61B6/03 , A61B6/00
CPC分类号： A61B6/032 , A61B6/482 , A61B6/5282
摘要： A CT system includes a rotatable gantry having an opening to receive an object to be scanned, an x-ray source configured to project an x-ray beam toward the object having a primary intensity, a detector configured to detect high frequency electromagnetic energy passing through the object and output imaging data, and a data acquisition system (DAS) connected to the detector and configured to receive the imaging data. The system also includes a computer programmed to obtain image projection data of the object from the DAS, correct the projection data using a scatter function that is based at least on a known characteristic of the x-ray beam, and generate images using the corrected projection data.
摘要翻译： CT系统包括可旋转机架，其具有用于接收待扫描物体的开口，被配置为将X射线束投影到具有主要强度的物体的X射线源;检测器，被配置为检测经过的高频电磁能物体和输出成像数据，以及连接到检测器并被配置为接收成像数据的数据采集系统（DAS）。该系统还包括被编程为从DAS获得对象的图像投影数据的计算机，使用至少基于X射线束的已知特征的散射函数校正投影数据，并使用校正的投影产生图像数据。

4. 发明申请

US20130004050A1 METHOD AND SYSTEM FOR SCATTER CORRECTION IN X-RAY IMAGING 有权
标题翻译： X射线成像中散射校正的方法和系统
公开(公告)号：US20130004050A1
公开(公告)日：2013-01-03
申请号：US13174480
申请日：2011-06-30
申请人： Xiaoye Wu , Jiang Hsieh , Paavana Sainath , Xin Liu
发明人： Xiaoye Wu , Jiang Hsieh , Paavana Sainath , Xin Liu
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4085 , A61B6/4291 , A61B6/483 , A61B6/5205 , A61B6/5282
摘要： Approaches for deriving scatter information using inverse tracking of scattered X-rays is disclosed. In certain embodiments scattered rays are tracked from respective locations on a detector to a source of the X-ray radiation, as opposed to tracking schemes that proceed from the source to the detector. In one such approach, the inverse tracking is implemented using a density integrated volume that reduces the integration steps performed.
摘要翻译：公开了使用散射X射线的反向跟踪导出散射信息的方法。在某些实施例中，与从源到检测器进行的跟踪方案相反，散射光线从检测器上的相应位置跟踪到X射线辐射源。在一种这样的方法中，使用密度集成体积来实现逆追踪，其减少执行的集成步骤。

5. 发明授权

US08363779B2 System and method of acquiring multi-energy CT imaging data 有权
标题翻译：获取多能CT成像数据的系统和方法
公开(公告)号：US08363779B2
公开(公告)日：2013-01-29
申请号：US13484707
申请日：2012-05-31
申请人： Naveen Chandra , Xiaoye Wu , Thomas L. Toth , Jiang Hsieh
发明人： Naveen Chandra , Xiaoye Wu , Thomas L. Toth , Jiang Hsieh
IPC分类号： A61B6/00 , H05G1/64 , G06K9/00
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/4007 , A61B6/405 , A61B6/4241 , A61B6/482
摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, and a controller. The controller is configured to apply a first kVp for a first time period, apply a second kVp for a second time period, integrate two or more view datasets during the first time period, integrate one or more view datasets during the second time period, and generate an image using the datasets integrated during the first time period and during the second time period.
摘要翻译： CT系统包括具有用于接收待扫描物体的开口的可旋转机架和控制器。控制器被配置为在第一时间段内施加第一kVp，在第二时间段施加第二kVp，在第一时间段期间集成两个或更多个视图数据集，在第二时间段期间集成一个或多个视图数据集;以及使用在第一时间段期间和第二时间段期间集成的数据集生成图像。

6. 发明申请

US20120069952A1 SYSTEM AND METHOD OF SPECTRAL CALIBRATION AND BASIS MATERIAL DECOMPOSITION FOR X-RAY CT SYSTEMS 有权
标题翻译： X射线CT系统的光谱校准和基础材料分解系统与方法
公开(公告)号：US20120069952A1
公开(公告)日：2012-03-22
申请号：US12883631
申请日：2010-09-16
申请人： Xiaoye Wu , Dan Xu , Naveen Chandra , Zhanyu Ge , Jiang Hsieh , Daniel David Harrison , Mary Sue Kulpins
发明人： Xiaoye Wu , Dan Xu , Naveen Chandra , Zhanyu Ge , Jiang Hsieh , Daniel David Harrison , Mary Sue Kulpins
IPC分类号： A61B6/03
CPC分类号： A61B6/583 , A61B6/032 , A61B6/482 , A61B6/585
摘要： An imaging system includes an x-ray source that emits a beam of x-rays toward an object, a detector that receives high frequency electromagnetic energy attenuated by the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to compute detector coefficients based on a static low kVp measurement and a static high kVp measurement, capture incident spectra at high and low kVp during fast kVp switching, compute effective X-ray incident spectra at high and low kVp during fast kVp switching using the captured incident spectra, scan a water phantom and normalize the computed detector coefficients to water, adjust the computed effective X-ray incident spectra based on the normalized detector coefficients, compute basis material decomposition functions using the adjusted X-ray incident spectra, and generate one or more basis material density images using the computed basis material decomposition functions.
摘要翻译：成像系统包括：x射线源，其朝向物体发射X射线束;接收被物体衰减的高频电磁能的检测器;可操作地连接到检测器的数据采集系统（DAS）;以及计算机可操作地连接到DAS。计算机被编程为基于静态低kVp测量和静态高kVp测量来计算检测器系数，在快速kVp切换期间在高和低kVp处捕获入射光谱，在快速kVp期间计算高和低kVp处的有效X射线入射光谱使用捕获的入射光谱切换，扫描水体模型并将计算的检测器系数归一化为水，基于归一化的检测器系数调整计算的有效X射线入射光谱，使用调整的X射线入射光谱计算基础材料分解函数，并使用所计算的基础材料分解函数生成一个或多个基础材料密度图像。

7. 发明申请

US20110211667A1 DE-POPULATED DETECTOR FOR COMPUTED TOMOGRAPHY AND METHOD OF MAKING SAME 审中-公开
标题翻译：用于计算机图像的人口检测器及其制造方法
公开(公告)号：US20110211667A1
公开(公告)日：2011-09-01
申请号：US12714168
申请日：2010-02-26
申请人： Abdelaziz Ikhlef , Jiang Hsieh , Jeffrey Alan Kautzer , Robert F. Senzig , Bruno Kristiaan Bernard De Man , Paavana Sainath , Xiaoye Wu , Jed Douglas Pack
发明人： Abdelaziz Ikhlef , Jiang Hsieh , Jeffrey Alan Kautzer , Robert F. Senzig , Bruno Kristiaan Bernard De Man , Paavana Sainath , Xiaoye Wu , Jed Douglas Pack
IPC分类号： H05G1/60 , B23P11/00
CPC分类号： A61B6/4208 , A61B6/032 , G01T1/2985 , Y10T29/49826
摘要： A system, method, and apparatus includes a computed tomography (CT) detector array having a central region with a plurality of central region detecting cells configured to acquire CT data of a first number of slices during a scan, a first wing along a first side of the central region, and a second wing along a second side of the central region opposite the first side. The first wing includes a plurality of first wing detecting cells configured to acquire CT data of a second number of slices during the scan. The second wing includes a plurality of second wing detecting cells configured to acquire CT data of a third number of slices during the scan. The second and third number of slices are less than the first number of slices. The first wing detecting cells are of a different type than the central region detecting cells.
摘要翻译：系统，方法和装置包括具有中心区域的计算机断层摄影（CT）检测器阵列，多个中心区域检测单元被配置为在扫描期间获取第一数量的切片的CT数据，沿着第一侧并且沿着与第一侧相对的中心区域的第二侧的第二翼。第一机翼包括多个第一机翼检测单元，其被配置为在扫描期间获取第二数量的切片的CT数据。第二翼包括多个第二翼检测单元，其被配置为在扫描期间获取第三数量的切片的CT数据。第二和第三数量的切片小于第一数量的切片。第一机翼检测单元与中央区域检测单元不同。

8. 发明授权

US08942341B2 Method of dose reduction for CT imaging and apparatus for implementing same 有权
标题翻译： CT成像剂量减少方法及其实施方法
公开(公告)号：US08942341B2
公开(公告)日：2015-01-27
申请号：US13223665
申请日：2011-09-01
申请人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
发明人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
IPC分类号： A61B6/03 , G21K3/00 , A61B6/06 , A61B6/00
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4078 , A61B6/503 , A61B6/542
摘要： A CT system includes an x-ray source configured to project an x-ray beam toward an object, a detector array, and a bowtie filter. The bowtie filter includes a first x-ray filtration region positioned to attenuate x-rays that pass through an isochannel of the detector array, a second x-ray filtration region positioned to attenuate x-rays that pass through channels of the detector array that are offcenter in a channel direction from the isochannel, and an x-ray attenuation material positionable to attenuate the x-rays that pass through the channels of the detector array that are offcenter in the channel direction from the isochannel. The CT system also includes a data acquisition system (DAS) connected to the detector array and configured to receive outputs from the detector array, and a computer programmed to acquire projections of imaging data of the object, and generate an image of the object using the imaging data.
摘要翻译： CT系统包括被配置为将X射线束投影到物体的X射线源，检测器阵列和bowtie滤波器。弓形过滤器包括第一x射线过滤区域，其定位成衰减穿过检测器阵列的等通道的x射线;第二x射线过滤区域，其被定位成衰减穿过检测器阵列的通道的x射线，离子中心在来自等信道的通道方向上，以及x射线衰减材料，其可定位成衰减穿过检测器阵列的通道的X射线，所述X射线在通道方向上偏离同步通道。 CT系统还包括连接到检测器阵列并被配置为接收来自检测器阵列的输出的数据采集系统（DAS），以及被编程为获取对象的成像数据的投影的计算机，并且使用成像数据。

9. 发明申请

US20130058451A1 METHOD OF DOSE REDUCTION FOR CT IMAGING AND APPARATUS FOR IMPLEMENTING SAME 有权
标题翻译：用于CT成像的剂量减少方法和用于实施其的装置
公开(公告)号：US20130058451A1
公开(公告)日：2013-03-07
申请号：US13223665
申请日：2011-09-01
申请人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
发明人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4078 , A61B6/503 , A61B6/542
摘要： A CT system includes an x-ray source configured to project an x-ray beam toward an object, a detector array, and a bowtie filter. The bowtie filter includes a first x-ray filtration region positioned to attenuate x-rays that pass through an isochannel of the detector array, a second x-ray filtration region positioned to attenuate x-rays that pass through channels of the detector array that are offcenter in a channel direction from the isochannel, and an x-ray attenuation material positionable to attenuate the x-rays that pass through the channels of the detector array that are offcenter in the channel direction from the isochannel. The CT system also includes a data acquisition system (DAS) connected to the detector array and configured to receive outputs from the detector array, and a computer programmed to acquire projections of imaging data of the object, and generate an image of the object using the imaging data.
摘要翻译： CT系统包括被配置为将X射线束投影到物体的X射线源，检测器阵列和bowtie滤波器。弓形过滤器包括第一x射线过滤区域，其定位成衰减穿过检测器阵列的等通道的x射线;第二x射线过滤区域，其被定位成衰减穿过检测器阵列的通道的x射线，离子中心在来自等信道的通道方向上，以及x射线衰减材料，其可定位成衰减穿过检测器阵列的通道的X射线，所述X射线在通道方向上偏离同步通道。 CT系统还包括连接到检测器阵列并被配置为接收来自检测器阵列的输出的数据采集系统（DAS），以及被编程为获取对象的成像数据的投影的计算机，并且使用成像数据。

10. 发明申请

US20120163557A1 METHODS AND PHANTOMS FOR CALIBRATING AN IMAGING SYSTEM 审中-公开
标题翻译：用于校准成像系统的方法和方法
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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