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1. 发明申请

US20160166221A1 METHODS AND SYSTEMS FOR SPECTRAL CT IMAGING 有权
标题翻译：用于光谱CT成像的方法和系统
公开(公告)号：US20160166221A1
公开(公告)日：2016-06-16
申请号：US14567828
申请日：2014-12-11
申请人： General Electric Company
发明人： Hewei Gao , Tonghe Wang , Jiahua Fan , Guangzhi Cao
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/482 , A61B6/032 , A61B6/52 , G06T11/005 , G06T11/006 , G06T2211/408
摘要： Various methods and systems for dual energy spectral computed tomography imaging are provided. In one embodiment, a method for dual energy imaging comprises generating an image from a higher energy dataset and an updated lower energy dataset, wherein the updated lower energy dataset comprises a combination of a lower energy dataset and a pseudo projection dataset generated from the higher energy dataset. In this way, a weak low energy signal may be recovered, thereby enabling image reconstruction in spite of photon starvation and sparse views.
摘要翻译：提供了用于双能谱计算机断层摄影成像的各种方法和系统。在一个实施例中，用于双能量成像的方法包括从较高能量数据集和更新的较低能量数据集生成图像，其中更新的较低能量数据集包括较低能量数据集和从更高能量产生的伪投影数据集的组合数据集以这种方式，可以恢复弱的低能量信号，从而使得尽管存在光子饥饿和稀疏视图的图像重建。

2. 发明申请

US20160143607A1 METHODS AND SYSTEMS FOR CORRECTING TABLE DEFLECTION 有权
标题翻译：校正表偏差的方法和系统
公开(公告)号：US20160143607A1
公开(公告)日：2016-05-26
申请号：US14548846
申请日：2014-11-20
申请人： General Electric Company , The University of Notre Dame du Lac
发明人： Guangzhi Cao , Jiang Hsieh , Jean-Baptiste Thibault , Jiahua Fan , Ken D. Sauer
IPC分类号： A61B6/00 , G06T7/00 , A61B6/04 , G06T11/00 , A61B6/02 , A61B6/03
CPC分类号： A61B6/5276 , A61B6/027 , A61B6/032 , A61B6/0407 , G06T7/0012 , G06T11/003 , G06T11/006 , G06T2207/10081
摘要： Various methods and systems are provided for estimating and compensating for table deflection in reconstructed images. In one embodiment, a method for computed tomography (CT) imaging comprises reconstructing images from data acquired during a helical CT scan where table deflection parameters are estimated and the reconstruction is adjusted based on the table deflection parameters. In this way, images may be reconstructed without artifacts caused by table deflection.
摘要翻译：提供了各种方法和系统来估计和补偿重建图像中的表偏移。在一个实施例中，一种用于计算机断层摄影（CT）成像的方法包括从在螺旋CT扫描期间获取的数据重建图像，其中估计表偏转参数并且基于表偏转参数来调整重建。以这种方式，可以重建图像而不产生由表偏转引起的伪像。

3. 发明申请

US20160078619A1 SYSTEMS AND METHODS FOR IMAGING PHASE SELECTION FOR COMPUTED TOMOGRAPHY IMAGING 有权
标题翻译：用于成像计算机图像成像相位选择的系统和方法
公开(公告)号：US20160078619A1
公开(公告)日：2016-03-17
申请号：US14484544
申请日：2014-09-12
申请人： General Electric Company
发明人： Jiang Hsieh , Saad Ahmed Sirohey , Roy A. Nilsen , Suresh Narayanan Narayanan , Guangzhi Cao
IPC分类号： G06T7/00 , A61B6/00 , G06T7/20 , G06K9/62 , G06K9/46 , A61B6/03 , A61B6/06
CPC分类号： A61B6/504 , A61B6/025 , A61B6/032 , A61B6/06 , A61B6/481 , A61B6/486 , A61B6/488 , A61B6/507 , A61B6/5205 , A61B6/5217 , A61B6/5252 , A61B6/541 , A61B6/542 , A61B6/545 , G06K9/4661 , G06K9/6215 , G06T7/0014 , G06T7/20 , G06T2207/30048
摘要： An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector configured to collect CT imaging data of an object to be imaged. The processing unit includes at least one processor operably coupled to the CT acquisition unit. The processing unit is configured to control the CT acquisition unit to collect at least one sample projection during rotation of the CT acquisition unit about the object to be imaged, compare an intensity of the at least one sample projection to an intensity of a reference projection, select a time to perform an imaging scan based on the comparison of the intensity of the at least one sample projection to the intensity of the reference projection, and control the CT acquisition unit to perform the imaging scan.
摘要翻译：成像系统包括计算机断层摄影（CT）获取单元和处理单元。 CT采集单元包括：X射线源和CT检测器，被配置为收集待成像对象的CT成像数据。处理单元包括可操作地耦合到CT采集单元的至少一个处理器。所述处理单元被配置为控制所述CT采集单元，以在所述CT采集单元围绕待成像对象旋转期间收集至少一个样本投影，将所述至少一个样本投影的强度与参考投影的强度进行比较，基于所述至少一个样本投影的强度与所述参考投影的强度的比较来选择执行成像扫描的时间，以及控制所述CT采集单元执行所述成像扫描。

4. 发明申请

US20160038113A1 SYSTEMS AND METHODS FOR ADJUSTABLE VIEW FREQUENCY COMPUTED TOMOGRAPHY IMAGING 有权
标题翻译：用于可调节视频频率计算机图像成像的系统和方法
公开(公告)号：US20160038113A1
公开(公告)日：2016-02-11
申请号：US14451616
申请日：2014-08-05
申请人： General Electric Company
发明人： Jiahua Fan , Jed Douglas Pack , Guangzhi Cao , David Joseph Pitterle , Grant Morey Stevens
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/032 , A61B6/037 , A61B6/488 , A61B6/542
摘要： An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector configured to collect CT imaging data of an object to be imaged. The X-ray source and CT detector are configured to be rotated about the object to be imaged and to collect a series of views of the object as the X-ray source and CT detector rotate about the object to be imaged. The processing unit is operably coupled to the CT acquisition unit and configured to control the CT acquisition unit to vary a view duration for the views of the series. The view duration for a particular view defines an imaging information acquisition period for the particular view, wherein the series of views includes a first group of views having a first view duration and a second group of views having a second view duration that is different than the first view duration.
摘要翻译：成像系统包括计算机断层摄影（CT）获取单元和处理单元。 CT采集单元包括：X射线源和CT检测器，被配置为收集待成像对象的CT成像数据。 X射线源和CT检测器被配置为围绕待成像对象旋转，并且当X射线源和CT检测器围绕待成像对象旋转时，收集对象的一系列视图。处理单元可操作地耦合到CT采集单元并且被配置为控制CT采集单元以改变该系列视图的视图持续时间。特定视图的视图持续时间定义了特定视图的成像信息获取周期，其中，所述一系列视图包括具有第一视图持续时间的第一组视图和具有不同于第二视图持续时间的第二视图持续时间第一次观看时间。

5. 发明授权

US09585626B2 Methods and systems for spectral CT imaging 有权
标题翻译：光谱CT成像的方法和系统
公开(公告)号：US09585626B2
公开(公告)日：2017-03-07
申请号：US14567828
申请日：2014-12-11
申请人： General Electric Company
发明人： Hewei Gao , Tonghe Wang , Jiahua Fan , Guangzhi Cao
IPC分类号： A61B1/00 , A61B6/00 , G06T11/00 , A61B6/03
CPC分类号： A61B6/482 , A61B6/032 , A61B6/52 , G06T11/005 , G06T11/006 , G06T2211/408
摘要： Various methods and systems for dual energy spectral computed tomography imaging are provided. In one embodiment, a method for dual energy imaging comprises generating an image from a higher energy dataset and an updated lower energy dataset, wherein the updated lower energy dataset comprises a combination of a lower energy dataset and a pseudo projection dataset generated from the higher energy dataset. In this way, a weak low energy signal may be recovered, thereby enabling image reconstruction in spite of photon starvation and sparse views.
摘要翻译：提供了用于双能谱计算机断层摄影成像的各种方法和系统。在一个实施例中，用于双能量成像的方法包括从较高能量数据集和更新的较低能量数据集生成图像，其中更新的较低能量数据集包括较低能量数据集和从更高能量产生的伪投影数据集的组合数据集以这种方式，可以恢复弱的低能量信号，从而使得尽管存在光子饥饿和稀疏视图的图像重建。

6. 发明授权

US09538974B2 Methods and systems for correcting table deflection 有权
标题翻译：校正台面偏转的方法和系统
公开(公告)号：US09538974B2
公开(公告)日：2017-01-10
申请号：US14548846
申请日：2014-11-20
申请人： General Electric Company , The University of Notre Dame du Lac
发明人： Guangzhi Cao , Jiang Hsieh , Jean-Baptiste Thibault , Jiahua Fan , Ken D. Sauer
IPC分类号： G06K9/00 , A61B6/00 , A61B6/02 , A61B6/03 , A61B6/04 , G06T11/00 , G06T7/00
CPC分类号： A61B6/5276 , A61B6/027 , A61B6/032 , A61B6/0407 , G06T7/0012 , G06T11/003 , G06T11/006 , G06T2207/10081
摘要： Various methods and systems are provided for estimating and compensating for table deflection in reconstructed images. In one embodiment, a method for computed tomography (CT) imaging comprises reconstructing images from data acquired during a helical CT scan where table deflection parameters are estimated and the reconstruction is adjusted based on the table deflection parameters. In this way, images may be reconstructed without artifacts caused by table deflection.
摘要翻译：提供了各种方法和系统来估计和补偿重建图像中的表偏移。在一个实施例中，一种用于计算机断层摄影（CT）成像的方法包括从在螺旋CT扫描期间获取的数据重建图像，其中估计表偏转参数并且基于表偏转参数来调整重建。以这种方式，可以重建图像而不产生由表偏转引起的伪像。

7. 发明授权

US09517042B2 Systems and methods for imaging phase selection for computed tomography imaging 有权
标题翻译：用于计算机断层摄影成像相位选择的系统和方法
公开(公告)号：US09517042B2
公开(公告)日：2016-12-13
申请号：US14484544
申请日：2014-09-12
申请人： General Electric Company
发明人： Jiang Hsieh , Saad Ahmed Sirohey , Roy A. Nilsen , Suresh Narayanan Narayanan , Guangzhi Cao
IPC分类号： A61B6/03 , A61B6/00 , A61B6/06 , G06K9/46 , G06K9/62 , G06T7/00 , G06T7/20 , A61B6/02
CPC分类号： A61B6/504 , A61B6/025 , A61B6/032 , A61B6/06 , A61B6/481 , A61B6/486 , A61B6/488 , A61B6/507 , A61B6/5205 , A61B6/5217 , A61B6/5252 , A61B6/541 , A61B6/542 , A61B6/545 , G06K9/4661 , G06K9/6215 , G06T7/0014 , G06T7/20 , G06T2207/30048
摘要： An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector configured to collect CT imaging data of an object to be imaged. The processing unit includes at least one processor operably coupled to the CT acquisition unit. The processing unit is configured to control the CT acquisition unit to collect at least one sample projection during rotation of the CT acquisition unit about the object to be imaged, compare an intensity of the at least one sample projection to an intensity of a reference projection, select a time to perform an imaging scan based on the comparison of the intensity of the at least one sample projection to the intensity of the reference projection, and control the CT acquisition unit to perform the imaging scan.
摘要翻译：成像系统包括计算机断层摄影（CT）获取单元和处理单元。 CT采集单元包括：X射线源和CT检测器，被配置为收集待成像对象的CT成像数据。处理单元包括可操作地耦合到CT采集单元的至少一个处理器。所述处理单元被配置为控制所述CT采集单元，以在所述CT采集单元围绕待成像对象旋转期间收集至少一个样本投影，将所述至少一个样本投影的强度与参考投影的强度进行比较，基于所述至少一个样本投影的强度与所述参考投影的强度的比较来选择执行成像扫描的时间，以及控制所述CT采集单元执行所述成像扫描。

8. 发明授权

US09486173B2 Systems and methods for adjustable view frequency computed tomography imaging 有权
标题翻译：可调视频计算机断层摄影成像的系统和方法
公开(公告)号：US09486173B2
公开(公告)日：2016-11-08
申请号：US14451616
申请日：2014-08-05
申请人： General Electric Company
发明人： Jiahua Fan , Jed Douglas Pack , Guangzhi Cao , David Joseph Pitterle , Grant Morey Stevens
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/032 , A61B6/037 , A61B6/488 , A61B6/542
摘要： An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector configured to collect CT imaging data of an object to be imaged. The X-ray source and CT detector are configured to be rotated about the object to be imaged and to collect a series of views of the object as the X-ray source and CT detector rotate about the object to be imaged. The processing unit is operably coupled to the CT acquisition unit and configured to control the CT acquisition unit to vary a view duration for the views of the series. The view duration for a particular view defines an imaging information acquisition period for the particular view, wherein the series of views includes a first group of views having a first view duration and a second group of views having a second view duration that is different than the first view duration.
摘要翻译：成像系统包括计算机断层摄影（CT）获取单元和处理单元。 CT采集单元包括：X射线源和CT检测器，被配置为收集待成像对象的CT成像数据。 X射线源和CT检测器被配置为围绕待成像对象旋转，并且当X射线源和CT检测器围绕待成像对象旋转时，收集对象的一系列视图。处理单元可操作地耦合到CT采集单元并且被配置为控制CT采集单元以改变该系列视图的视图持续时间。特定视图的视图持续时间定义了特定视图的成像信息获取周期，其中，所述一系列视图包括具有第一视图持续时间的第一组视图和具有不同于第二视图持续时间的第二视图持续时间第一次观看时间。

9. 发明授权

US09357976B2 System and method of noise deletion in computed tomography 有权
标题翻译：计算机断层扫描中噪声缺失的系统和方法
公开(公告)号：US09357976B2
公开(公告)日：2016-06-07
申请号：US14062207
申请日：2013-10-24
申请人： General Electric Company
发明人： Guangzhi Cao , Jiahua Fan , Edgar Chino
IPC分类号： A61B6/00 , A61B6/03 , G06T11/00
CPC分类号： A61B6/5264 , A61B6/032 , A61B6/4291 , A61B6/5258 , G06T11/006 , G06T11/008 , G06T2211/424
摘要： An imaging system includes a computer programmed to reconstruct original CT projection data, estimate noise in image space, forward project the image noise estimate to generate an initial projection noise estimate, modify the initial projection noise estimate using a statistical property of noise in projection space, remove noise in the original CT projection data by subtracting the modified noise estimate therefrom to generate noise-removed projection data, and reconstruct a final image based on the noise-removed projection data.
摘要翻译：成像系统包括被编程为重建原始CT投影数据的计算机，估计图像空间中的噪声，向前投影图像噪声估计以产生初始投影噪声估计，使用投影空间中的噪声的统计特性修改初始投影噪声估计，通过从其中减去修改的噪声估计来消除原始CT投影数据中的噪声，以产生噪声消除的投影数据，并且基于噪声消除的投影数据重建最终图像。

10. 发明申请

US20150117596A1 SYSTEM AND METHOD OF NOISE DELETION IN COMPUTED TOMOGRAPHY 有权
标题翻译：计算机断层扫描的系统和噪声方法
公开(公告)号：US20150117596A1
公开(公告)日：2015-04-30
申请号：US14062207
申请日：2013-10-24
申请人： General Electric Company
发明人： Guangzhi Cao , Jiahua Fan , Edgar Chino
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/5264 , A61B6/032 , A61B6/4291 , A61B6/5258 , G06T11/006 , G06T11/008 , G06T2211/424
摘要： An imaging system includes a computer programmed to reconstruct original CT projection data, estimate noise in image space, forward project the image noise estimate to generate an initial projection noise estimate, modify the initial projection noise estimate using a statistical property of noise in projection space, remove noise in the original CT projection data by subtracting the modified noise estimate therefrom to generate noise-removed projection data, and reconstruct a final image based on the noise-removed projection data.
摘要翻译：成像系统包括被编程为重建原始CT投影数据的计算机，估计图像空间中的噪声，向前投影图像噪声估计以产生初始投影噪声估计，使用投影空间中的噪声的统计特性修改初始投影噪声估计，通过从其中减去修改的噪声估计来消除原始CT投影数据中的噪声，以产生噪声消除的投影数据，并且基于噪声消除的投影数据重建最终图像。

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