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1. 发明申请

US20110150306A1 APPARATUS AND METHODS FOR DETERMINING A BOUNDARY OF AN OBJECT FOR POSITRON EMISSION TOMOGRAPHY SCATTER CORRECTION 有权
标题翻译：用于确定POSI发射平面扫描校正的对象边界的装置和方法
公开(公告)号：US20110150306A1
公开(公告)日：2011-06-23
申请号：US12643735
申请日：2009-12-21
申请人： Steven Gerard Ross , Timothy Wayne Deller , Ravindra Mohan Manjeshwar , Scott David Wollenweber , Charles William Stearns
发明人： Steven Gerard Ross , Timothy Wayne Deller , Ravindra Mohan Manjeshwar , Scott David Wollenweber , Charles William Stearns
IPC分类号： G06K9/62 , H05G1/60 , G01T1/166
CPC分类号： A61B6/032 , A61B6/037 , A61B6/5211 , G01T1/1611 , G01T1/2985 , G06T11/005
摘要： Apparatus and methods for determining a boundary of an object for positron emission tomography (PET) scatter correction are provided. One method includes obtaining positron emission tomography (PET) data and computed tomography (CT) data for an object. The PET data and CT data is acquired from an imaging system. The method further includes determining a PET data boundary of the object based on the PET data and determining a CT data boundary of the object based on the CT data. The method further includes determining a combined boundary for PET scatter correction. The combined boundary encompasses the PET data boundary and the CT data boundary.
摘要翻译：提供了用于确定正电子发射断层摄影（PET）散射校正物体边界的装置和方法。一种方法包括获得对象的正电子发射断层摄影（PET）数据和计算机断层摄影（CT）数据。从成像系统获取PET数据和CT数据。该方法还包括基于PET数据确定对象的PET数据边界，并且基于CT数据确定对象的CT数据边界。该方法还包括确定PET散射校正的组合边界。组合边界包含PET数据边界和CT数据边界。

2. 发明授权

US08415630B2 Apparatus and methods for determining a boundary of an object for positron emission tomography scatter correction 有权
标题翻译：用于确定正电子发射断层扫描物体的边界的装置和方法
公开(公告)号：US08415630B2
公开(公告)日：2013-04-09
申请号：US12643735
申请日：2009-12-21
申请人： Steven Gerard Ross , Timothy Wayne Deller , Ravindra Mohan Manjeshwar , Scott David Wollenweber , Charles William Stearns
发明人： Steven Gerard Ross , Timothy Wayne Deller , Ravindra Mohan Manjeshwar , Scott David Wollenweber , Charles William Stearns
IPC分类号： G01T1/161 , G01T1/166 , A61B6/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/5211 , G01T1/1611 , G01T1/2985 , G06T11/005
摘要： Apparatus and methods for determining a boundary of an object for positron emission tomography (PET) scatter correction are provided. One method includes obtaining positron emission tomography (PET) data and computed tomography (CT) data for an object. The PET data and CT data is acquired from an imaging system. The method further includes determining a PET data boundary of the object based on the PET data and determining a CT data boundary of the object based on the CT data. The method further includes determining a combined boundary for PET scatter correction. The combined boundary encompasses the PET data boundary and the CT data boundary.
摘要翻译：提供了用于确定正电子发射断层摄影（PET）散射校正物体边界的装置和方法。一种方法包括获得对象的正电子发射断层摄影（PET）数据和计算机断层摄影（CT）数据。从成像系统获取PET数据和CT数据。该方法还包括基于PET数据确定对象的PET数据边界，并且基于CT数据确定对象的CT数据边界。该方法还包括确定PET散射校正的组合边界。组合边界包含PET数据边界和CT数据边界。

3. 发明授权

US07173248B2 Methods and systems for positron emission tomography data correction 有权
标题翻译：正电子发射断层扫描数据校正的方法和系统
公开(公告)号：US07173248B2
公开(公告)日：2007-02-06
申请号：US10969716
申请日：2004-10-20
申请人： Steven Gerard Ross , Charles William Stearns , Ravindra Mohan Manjeshwar
发明人： Steven Gerard Ross , Charles William Stearns , Ravindra Mohan Manjeshwar
IPC分类号： G01T1/164
CPC分类号： G06T11/006 , G06T2211/424
摘要： Methods and systems for image overlap correction are provided. The method includes acquiring the emission projection data from a plurality of scan frames that extend across at least a portion of a length of an object being imaged wherein elements of the object lie between a region of overlap between two successive frames. The method further includes iteratively reconstructing a 3D image volume from multi-frame emission projection data by updating an estimate of 3D image volume using emission projection data from the plurality of frames within an iterative reconstruction loop.
摘要翻译：提供了图像重叠校正的方法和系统。该方法包括从多个扫描帧中获取发射投影数据，所述多个扫描帧延伸穿过被成像物体的长度的至少一部分，其中物体的元件位于两个连续帧之间的重叠区域之间。该方法还包括通过使用来自迭代重建循环内的多个帧的发射投影数据更新3D图像体积的估计来从多帧发射投影数据中迭代重建3D图像体积。

4. 发明授权

US08903152B2 Methods and systems for enhanced tomographic imaging 有权
标题翻译：增强断层成像的方法和系统
公开(公告)号：US08903152B2
公开(公告)日：2014-12-02
申请号：US13539028
申请日：2012-06-29
申请人： Evren Asma , Ravindra Mohan Manjeshwar , Steven Gerard Ross , Sangtae Ahn , David Erik Chevalier
发明人： Evren Asma , Ravindra Mohan Manjeshwar , Steven Gerard Ross , Sangtae Ahn , David Erik Chevalier
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/424
摘要： Embodiments of methods, systems and non-transitory computer readable media for tomographic imaging are presented. 3D TOF projection data is processed to generate corresponding data in a designated format that allows for computationally cheaper image reconstruction than the 3D TOF projection data. Further, one or more preliminary images are reconstructed from the processed data using a particular image reconstruction technique for one or more iterations. To that end, one or more imaging parameters are iteratively varied every one or more iterations. The imaging parameters, for example, include the designated format, the image reconstruction technique and one or more image quality characteristics. One or more intermediate images are reconstructed from the one or more preliminary images using the iteratively varying imaging parameters. Further, 3D TOF images having the one or more designated image quality characteristics are generated using the one or more intermediate images and the iteratively varying imaging parameters.
摘要翻译：提出了用于断层成像的方法，系统和非暂时计算机可读介质的实施例。 3D TOF投影数据被处理以产生指定格式的相应数据，这允许比3D TOF投影数据更便宜的图像重建。此外，使用用于一次或多次迭代的特定图像重建技术，从经处理的数据重建一个或多个预备图像。为此，每一次或多次迭代迭代地改变一个或多个成像参数。成像参数例如包括指定格式，图像重建技术和一个或多个图像质量特性。使用迭代变化的成像参数，从一个或多个初步图像重建一个或多个中间图像。此外，使用一个或多个中间图像和迭代变化的成像参数来生成具有一个或多个指定图像质量特性的3D TOF图像。

5. 发明申请

US20140003689A1 METHODS AND SYSTEMS FOR ENHANCED TOMOGRAPHIC IMAGING 有权
标题翻译：用于增强图像成像的方法和系统
公开(公告)号：US20140003689A1
公开(公告)日：2014-01-02
申请号：US13539028
申请日：2012-06-29
申请人： Evren Asma , Ravindra Mohan Manjeshwar , Steven Gerard Ross , Sangtae Ahn , David Erik Chevalier
发明人： Evren Asma , Ravindra Mohan Manjeshwar , Steven Gerard Ross , Sangtae Ahn , David Erik Chevalier
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/424
摘要： Embodiments of methods, systems and non-transitory computer readable media for tomographic imaging are presented. 3D TOF projection data is processed to generate corresponding data in a designated format that allows for computationally cheaper image reconstruction than the 3D TOF projection data. Further, one or more preliminary images are reconstructed from the processed data using a particular image reconstruction technique for one or more iterations. To that end, one or more imaging parameters are iteratively varied every one or more iterations. The imaging parameters, for example, include the designated format, the image reconstruction technique and one or more image quality characteristics. One or more intermediate images are reconstructed from the one or more preliminary images using the iteratively varying imaging parameters. Further, 3D TOF images having the one or more designated image quality characteristics are generated using the one or more intermediate images and the iteratively varying imaging parameters.
摘要翻译：提出了用于断层成像的方法，系统和非暂时计算机可读介质的实施例。 3D TOF投影数据被处理以产生指定格式的相应数据，这允许比3D TOF投影数据更便宜的图像重建。此外，使用用于一次或多次迭代的特定图像重建技术，从经处理的数据重建一个或多个预备图像。为此，每一次或多次迭代迭代地改变一个或多个成像参数。成像参数例如包括指定格式，图像重建技术和一个或多个图像质量特性。使用迭代变化的成像参数，从一个或多个初步图像重建一个或多个中间图像。此外，使用一个或多个中间图像和迭代变化的成像参数来生成具有一个或多个指定图像质量特性的3D TOF图像。

6. 发明授权

US07405405B2 Method and system for reconstructing an image in a positron emission tomography (PET) system 有权
标题翻译：用于在正电子发射断层摄影（PET）系统中重建图像的方法和系统
公开(公告)号：US07405405B2
公开(公告)日：2008-07-29
申请号：US11131149
申请日：2005-05-17
申请人： Charles William Stearns , Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen
发明人： Charles William Stearns , Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen
IPC分类号： G01T1/164
CPC分类号： G01T1/2985
摘要： A method and system for reconstructing an image in a time-of-flight (TOF) positron emission tomography (PET) system is provided. The method includes using a reconstructed image to determine predicted timing information. Timing bias data is updated based on received timing information associated with acquired scan data from a PET system and the predicted timing information. The method further includes reconstructing the image, based on the updated timing bias data.
摘要翻译：提供了一种用于在飞行时间（TOF）正电子发射断层摄影（PET）系统中重建图像的方法和系统。该方法包括使用重构图像来确定预测的定时信息。基于与来自PET系统的获取的扫描数据相关联的接收定时信息和预测的定时信息来更新定时偏差数据。该方法还包括基于更新的定时偏差数据重建图像。

7. 发明授权

US07227149B2 Method and system for positron emission tomography image reconstruction 有权
标题翻译：正电子发射断层扫描图像重建方法与系统
公开(公告)号：US07227149B2
公开(公告)日：2007-06-05
申请号：US11026236
申请日：2004-12-30
申请人： Charles William Stearns , David Leo McDaniel , John Jay Williams , Alexander Ganin , Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , Yiping Shao
发明人： Charles William Stearns , David Leo McDaniel , John Jay Williams , Alexander Ganin , Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , Yiping Shao
IPC分类号： G01T1/164
CPC分类号： G01T1/2985
摘要： Methods and systems for controlling a positron emission tomography (PET) system are provided. The method includes receiving timing information from a PET system during an imaging scan using the PET system. The method further includes processing the received timing information and timing bias information relating to the PET system to control the PET system.
摘要翻译：提供了用于控制正电子发射断层摄影（PET）系统的方法和系统。该方法包括在使用PET系统的成像扫描期间从PET系统接收定时信息。该方法还包括处理接收到的定时信息和与PET系统有关的定时偏差信息以控制PET系统。

8. 发明申请

US20080240335A1 Iterative reconstruction of tomographic image data method and system 有权
标题翻译：断层图像数据方法和系统的迭代重建
公开(公告)号：US20080240335A1
公开(公告)日：2008-10-02
申请号：US11731612
申请日：2007-03-30
申请人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Henkensfeldt Jansen , James William Hugg , Charles William Stearns
发明人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Henkensfeldt Jansen , James William Hugg , Charles William Stearns
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/469 , G06T11/006 , G06T2211/424 , G06T2211/432
摘要： Methods for performing image reconstruction that include deriving background projection data for an area outside a targeted field of view of a tomographic image, and reconstructing the tomographic image of the targeted field of view, wherein the background projection data is used in the reconstruction. Methods for selecting a reconstruction methodology that include determining a number of pixels in a reconstructed image for a first reconstruction methodology, determining a number of pixels in a reconstructed image for a second reconstruction methodology, comparing the number of pixels for the first reconstruction methodology and the number of pixels for the second reconstruction methodology, and selecting the reconstruction methodology for image reconstruction based on the comparison of the number of pixels. Imaging systems implementing these methods are also provided.
摘要翻译：用于执行图像重建的方法，包括导出用于断层图像的目标视场外的区域的背景投影数据，以及重构所述目标视场的断层图像，其中所述背景投影数据用于所述重建。用于选择重建方法的方法，所述重建方法包括确定用于第一重建方法的重建图像中的像素数量，确定用于第二重建方法的重建图像中的像素数量，将第一重建方法的像素数与用于第二重建方法的像素数量，以及基于像素数目的比较来选择用于图像重建的重建方法。还提供了实现这些方法的成像系统。

9. 发明授权

US07381959B2 Technique for reconstructing PET scan images 有权
标题翻译： PET扫描图像重建技术
公开(公告)号：US07381959B2
公开(公告)日：2008-06-03
申请号：US11205067
申请日：2005-08-17
申请人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , Charles William Stearns
发明人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , Charles William Stearns
IPC分类号： G01T1/163
CPC分类号： G01T1/2985
摘要： The invention is directed to a technique for reconstructing PET scan images. According to one embodiment, the invention relates to a method for reconstructing PET scan images. The method comprises: detecting a plurality of coincidence events in a PET scanner; storing data associated with the plurality of coincidence events in a chronological list based on a detection time for each of the plurality of coincidence events; generating correction data based on scatter coincidence events and random coincidence events in the plurality of coincidence events; and reconstructing one or more PET scan images based at least in part on the chronological list of data and the correction data.
摘要翻译：本发明涉及一种重建PET扫描图像的技术。根据一个实施例，本发明涉及一种重建PET扫描图像的方法。该方法包括：在PET扫描器中检测多个符合事件; 基于多个重合事件中的每一个的检测时间，将与所述多个符合事件相关联的数据存储在时序列表中; 基于所述多个重合事件中的分散符合事件和随机符合事件生成校正数据; 以及至少部分地基于时间顺序的数据列表和校正数据重建一个或多个PET扫描图像。

10. 发明授权

US07680240B2 Iterative reconstruction of tomographic image data method and system 有权
标题翻译：断层图像数据方法和系统的迭代重建
公开(公告)号：US07680240B2
公开(公告)日：2010-03-16
申请号：US11731612
申请日：2007-03-30
申请人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , James William Hugg , Charles William Stearns
发明人： Ravindra Mohan Manjeshwar , Floribertus Philippus Martinus Heukensfeldt Jansen , James William Hugg , Charles William Stearns
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/469 , G06T11/006 , G06T2211/424 , G06T2211/432
摘要： Methods for performing image reconstruction that include deriving background projection data for an area outside a targeted field of view of a tomographic image, and reconstructing the tomographic image of the targeted field of view, wherein the background projection data is used in the reconstruction. Methods for selecting a reconstruction methodology that include determining a number of pixels in a reconstructed image for a first reconstruction methodology, determining a number of pixels in a reconstructed image for a second reconstruction methodology, comparing the number of pixels for the first reconstruction methodology and the number of pixels for the second reconstruction methodology, and selecting the reconstruction methodology for image reconstruction based on the comparison of the number of pixels. Imaging systems implementing these methods are also provided.
摘要翻译：用于执行图像重建的方法，包括导出用于断层图像的目标视场外的区域的背景投影数据，以及重构所述目标视场的断层图像，其中所述背景投影数据用于所述重建。用于选择重建方法的方法，所述重建方法包括确定用于第一重建方法的重建图像中的像素数量，确定用于第二重建方法的重建图像中的像素数量，将第一重建方法的像素数与用于第二重建方法的像素数量，以及基于像素数目的比较来选择用于图像重建的重建方法。还提供了实现这些方法的成像系统。

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