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11. 发明申请

US20100046821A1 MOTION CORRECTION IN TOMOGRAPHIC IMAGES 有权
标题翻译：图像图像中的运动校正
公开(公告)号：US20100046821A1
公开(公告)日：2010-02-25
申请号：US12550773
申请日：2009-08-31
申请人： Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans , Evren Asma
发明人： Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans , Evren Asma
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B5/7285 , A61B6/037 , A61B6/5235 , A61B6/5247 , A61B6/541 , G06T5/003 , G06T7/30 , G06T7/33 , G06T11/005 , G06T11/008 , G06T2207/10081 , G06T2207/10084 , G06T2207/10104 , G06T2207/20201 , G06T2207/20221 , G06T2207/30004 , G06T2207/30048 , G06T2207/30061 , G06T2211/412
摘要： An imaging method comprises reconstructing gated emission tomography images for a region of interest, adjusting a mismatch between the gated emission tomography images and a computed tomography image of the region of interest, registering the gated emission tomography images, and combining the registered gated emission tomography images to generate motion corrected images.
摘要翻译：一种成像方法包括重建关注区域的门控发射断层摄影图像，调整门控发射断层摄影图像与感兴趣区域的计算机断层摄影图像之间的失配，登记门控发射断层摄影图像，以及组合登记的门控发射断层摄影图像以产生运动校正图像。

12. 发明申请

US20090297058A1 METHOD AND APPARATUS FOR IMAGE RECONSTRUCTION FOR A SYNTHETIC APERTURE GAMMA RAY IMAGER 有权
标题翻译：用于合成孔径伽马射线成像器的图像重建的方法和装置
公开(公告)号：US20090297058A1
公开(公告)日：2009-12-03
申请号：US12332439
申请日：2008-12-11
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma
IPC分类号： G06K9/40 , G01T1/164 , G06K9/20
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon an imaging device. The imaging device includes a first detector and a second detector. The imaging system includes a mask having a first pattern of apertures therein, the mask positioned on a first side of the first detector, an anti-mask having a second pattern of apertures therein, wherein the second pattern is derived from the first pattern, the anti-mask positioned on a first side of the second detector, and a computer configured to acquire a plurality of mask datasets and anti-mask datasets of a gamma source, add one of the mask datasets and subtract its respective anti-mask dataset to create a far-field dataset, adjust the far-field image dataset, reconstruct a near-field image of the source using the far-field dataset, and apply an expectation maximization (EM) algorithm to one of the far-field image dataset and the near-field image to enhance contrast.
摘要翻译：成像系统包括其上安装有成像装置的平台。成像装置包括第一检测器和第二检测器。所述成像系统包括掩模，所述掩模具有其中的孔的第一图案，所述掩模位于所述第一检测器的第一侧上，所述掩模具有第二图案孔，其中所述第二图案是从所述第一图案得到的，反掩模位于第二检测器的第一侧，以及计算机，被配置为获取伽马源的多个掩模数据集和反掩模数据集，添加掩模数据集之一并减去其各自的防掩模数据集以创建远场数据集，调整远场图像数据集，使用远场数据集重建源的近场图像，并将期望最大化（EM）算法应用于远场图像数据集和近场图像增强对比度。

13. 发明申请

US20100193697A1 APPARATUS AND METHODS FOR EVALUATING OPERATION OF PIXELATED DETECTORS 有权
标题翻译：用于评估像素检测器操作的装置和方法
公开(公告)号：US20100193697A1
公开(公告)日：2010-08-05
申请号：US12365100
申请日：2009-02-03
申请人： Girish Bal , Floribertus Heukensfeldt Jansen , Osnat Zak , Gideon Berlad , Yaron Hefetz , Sergei Dolinsky , Brian D. Yanoff , John Eric Tkaczyk , Yanfeng Du , Ravindra Mohan Manjeshwar , Evren Asma , Qian Hua
发明人： Girish Bal , Floribertus Heukensfeldt Jansen , Osnat Zak , Gideon Berlad , Yaron Hefetz , Sergei Dolinsky , Brian D. Yanoff , John Eric Tkaczyk , Yanfeng Du , Ravindra Mohan Manjeshwar , Evren Asma , Qian Hua
IPC分类号： G01T1/00 , G01T1/172
CPC分类号： G01T1/249 , G01T1/247
摘要： An apparatus and methods for evaluating the operation of pixelated detectors are provided. The method includes obtaining data values for each of a plurality of pixels of a pixelated detector and determining a data consistency metric for each of the plurality of detector pixels. The method further includes identifying, using the determined data consistency metric, any detector pixels that exceed an acceptance criterion as noisy pixels.
摘要翻译：提供了一种用于评估像素化检测器的操作的装置和方法。该方法包括获得像素化检测器的多个像素中的每一个的数据值，并确定多个检测器像素中的每一个的数据一致性度量。该方法还包括使用所确定的数据一致性度量来识别超过接受标准的任何检测器像素作为噪声像素。

14. 发明申请

US20090296890A1 APPARATUS AND METHOD FOR IMAGE RECONSTRUCTION FOR A SYNTHETIC APERTURE GAMMA RAY IMAGER 有权
标题翻译：用于合成孔径伽马射线成像器的图像重建的装置和方法
公开(公告)号：US20090296890A1
公开(公告)日：2009-12-03
申请号：US12331936
申请日：2008-12-10
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P.M. Heukensfeldt Jansen
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P.M. Heukensfeldt Jansen
IPC分类号： G03B42/02
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline. The imaging system includes a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device. The computer is also configured to form a preliminary image based on the acquired plurality of far-field datasets, and apply an expectation maximization (EM) algorithm to the preliminary image; wherein the EM algorithm includes an ordered subset algorithm.
摘要翻译：成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台。成像系统包括被配置为在基线上获取多个远场数据集的计算机，所述多个远场数据集包括经由编码孔径成像装置接收的数据。计算机还被配置为基于所获取的多个远场数据集形成初步图像，并将预期最大化（EM）算法应用于初步图像; 其中所述EM算法包括有序子集算法。

15. 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。

16. 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。

17. 发明授权

US08158951B2 Apparatus and methods for evaluating operation of pixelated detectors 有权
标题翻译：用于评估像素化检测器的操作的装置和方法
公开(公告)号：US08158951B2
公开(公告)日：2012-04-17
申请号：US12365100
申请日：2009-02-03
申请人： Girish Bal , Floribertus Heukensfeldt Jansen , Osnat Zak , Gideon Berlad , Yaron Hefetz , Sergei Dolinsky , Brian D. Yanoff , John Eric Tkaczyk , Yanfeng Du , Ravindra Mohan Manjeshwar , Evren Asma , Qian Hua
发明人： Girish Bal , Floribertus Heukensfeldt Jansen , Osnat Zak , Gideon Berlad , Yaron Hefetz , Sergei Dolinsky , Brian D. Yanoff , John Eric Tkaczyk , Yanfeng Du , Ravindra Mohan Manjeshwar , Evren Asma , Qian Hua
IPC分类号： G01T1/00
CPC分类号： G01T1/249 , G01T1/247
摘要： An apparatus and methods for evaluating the operation of pixelated detectors are provided. The method includes obtaining data values for each of a plurality of pixels of a pixelated detector and determining a data consistency metric for each of the plurality of detector pixels. The method further includes identifying, using the determined data consistency metric, any detector pixels that exceed an acceptance criterion as noisy pixels.
摘要翻译：提供了一种用于评估像素化检测器的操作的装置和方法。该方法包括获得像素化检测器的多个像素中的每一个的数据值，并确定多个检测器像素中的每一个的数据一致性度量。该方法还包括使用所确定的数据一致性度量来识别超过接受标准的任何检测器像素作为噪声像素。

18. 发明授权

US08098916B2 System and method for image-based attenuation correction of PET/SPECT images 有权
标题翻译： PET / SPECT图像基于图像的衰减校正的系统和方法
公开(公告)号：US08098916B2
公开(公告)日：2012-01-17
申请号：US12118170
申请日：2008-05-09
申请人： Kris Flip Johan Jules Thielemans , Alexander Ganin , Evren Asma , Ravindra Mohan Manjeshwar
发明人： Kris Flip Johan Jules Thielemans , Alexander Ganin , Evren Asma , Ravindra Mohan Manjeshwar
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/5235 , G06T7/30 , G06T2207/10081 , G06T2207/10104 , G06T2207/30048 , G06T2207/30061
摘要： A system and method for image-based correction including a receiver to acquire an image from one or more data storage systems, one or more processors to determine an attenuation mismatch estimate and calculate a correction for the image based on the attenuation mismatch estimate and the image, and an output to generate an attenuation mismatch corrected image based on the correction.
摘要翻译：一种用于基于图像的校正的系统和方法，包括从一个或多个数据存储系统获取图像的接收器，用于确定衰减失配估计的一个或多个处理器，并且基于衰减失配估计和图像计算图像的校正，以及用于基于校正产生衰减失配校正图像的输出。

19. 发明授权

US07663105B2 Apparatus and method for image reconstruction for a synthetic aperture gamma ray imager 有权
标题翻译：用于合成孔径伽马射线成像仪的图像重建的装置和方法
公开(公告)号：US07663105B2
公开(公告)日：2010-02-16
申请号：US12331936
申请日：2008-12-10
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P. M. Heukensfeldt Jansen
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P. M. Heukensfeldt Jansen
IPC分类号： G01T1/00
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline. The imaging system includes a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device. The computer is also configured to form a preliminary image based on the acquired plurality of far-field datasets, and apply an expectation maximization (EM) algorithm to the preliminary image; wherein the EM algorithm includes an ordered subset algorithm.
摘要翻译：成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台。成像系统包括被配置为在基线上获取多个远场数据集的计算机，所述多个远场数据集包括经由编码孔径成像装置接收的数据。计算机还被配置为基于所获取的多个远场数据集形成初步图像，并将预期最大化（EM）算法应用于初步图像; 其中所述EM算法包括有序子集算法。

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