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公开(公告)号：US11798205B2
公开(公告)日：2023-10-24
申请号：US16959219
申请日：2019-01-02
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Andriy Andreyev , Bin Zhang , James Gurian , Zhiqiang Hu , Yu-Lung Hsieh , Shekhar Dwivedi , Jinghan Ye , Xiyun Song , Michael Allen Miller
CPC classification number: G06T11/006 , G06T5/002 , G06T7/0012 , G06T2200/24 , G06T2207/10081 , G06T2207/30004
Abstract: A non-transitory computer-readable medium stores instructions readable and executable by a workstation (18) including at least one electronic processor (20) to perform an image reconstruction method (100). The method includes: determining a weighting parameter (13) of an edge-preserving regularization or penalty of a regularized image reconstruction of an image acquisition device (12) for an imaging data set obtained by the image acquisition device; determining an edge sensitivity parameter (γ) of the edge-preserving algorithm for the imaging data set obtained by the image acquisition device; and reconstructing the imaging data set obtained by the image acquisition device to generate a reconstructed image by applying the regularized image reconstruction including the edge-preserving regularization or penalty with the determined weighting and edge sensitivity parameters to the imaging data set obtained by the image acquisition device.
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公开(公告)号：US11061151B2
公开(公告)日：2021-07-13
申请号：US16466587
申请日：2017-12-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Andriy Andreyev , Bin Zhang , Zhiqiang Hu
Abstract: A positron emission tomography (PET) detector array includes an enclosing radiation detector array (10) comprising radiation detector elements (14, 16) effective for detecting 511 keV radiation emanating from inside the radiation detector array. The radiation detector pixels of the cylindrical radiation detector array include both higher speed radiation detector elements (14) and lower speed radiation detector elements (16). The lower speed radiation detector pixels have a temporal resolution that is coarser than a temporal resolution of the higher speed radiation detector pixels.
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3.发明授权公开(公告)号：US10925554B2
公开(公告)日：2021-02-23
申请号：US15533749
申请日：2015-12-03
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Andriy Andreyev , Manoj Narayanan , Bin Zhang , Zhiqiang Hu , Yu-Lung Hsieh , Xiyun Song , Jinghan Ye
Abstract: A radioemission scanner (12) is operated to acquire tomographic radioemission data of a radiopharmaceutical in a subject in an imaging field of view (FOV). An imaging system is operated to acquire extension imaging data of the subject in an extended FOV disposed outside of and adjacent the imaging FOV along an axial direction (18). A distribution of the radiopharmaceutical in the subject in the extended FOV is estimated based on the extension imaging data, and further based on a database (32) of reference subjects. The tomographic radioemission data are reconstructed to generate a reconstructed image (26) of the subject in the imaging FOV. The reconstruction includes correcting the reconstructed image for scatter from the extended FOV into the imaging FOV based on the estimated distribution of the radiopharmaceutical in the subject in the extended FOV.
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公开(公告)号：US10852448B2
公开(公告)日：2020-12-01
申请号：US16469605
申请日：2017-12-06
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Xiyun Song , Chuanyong Bai , Andriy Andreyev , Bin Zhang , Shushen Lin , Jinghan Ye , Michael Allen Miller , Zhiqiang Hu
Abstract: A PET detector array (8) comprising detector pixels acquires PET detection counts along lines of response (LORs). The counts are reconstructed to generate a reconstructed PET image (36, 46). The reconstructing is corrected for missing LORs which are missing due to dead detector pixels of the PET detector array. The correction may be by estimating counts along the missing LORs (60) by interpolating counts along LORs (66) neighboring the missing LORs. The interpolation may be iterative to handle contiguous groups of missing detector pixels. The correction may be by computing a sensitivity matrix having matrix elements corresponding to image elements (80, 82) of the reconstructed PET image. In this case, each matrix element is computed as a summation over all LORs intersecting the corresponding image element excepting the missing LORs. The computed sensitivity matrix is used in the reconstructing.
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公开(公告)号：US09332955B2
公开(公告)日：2016-05-10
申请号：US14348905
申请日：2012-09-21
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： John Patrick Collins , Chi-Hua Tung , Bin Zhang
CPC classification number: A61B6/5235 , A61B6/032 , A61B6/037 , A61B6/4417 , A61B6/545 , F04C2270/041
Abstract: A hybrid imaging system includes a first imaging system configured to acquire anatomical data of a first field of view of an anatomical structure. A second imaging system configured to acquire functional data of the anatomical structure, the second imaging system acquiring functional data in a two-pass list-mode acquisition scheme. A reconstruction processor configured to reconstruct the functional data based on attenuation data into an attenuation corrected image and reconstruct the anatomical data into one or more high resolution images of one or more regions of interest.
Abstract translation: 混合成像系统包括被配置为获取解剖结构的第一视野的解剖学数据的第一成像系统。 第二成像系统，被配置为获取所述解剖结构的功能数据，所述第二成像系统以双路列表模式获取方案获取功能数据。 一种重建处理器，被配置为基于衰减数据将功能数据重建为衰减校正图像，并将解剖学数据重建成一个或多个感兴趣区域的一个或多个高分辨率图像。
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Patent Agency Ranking
公开(公告)号：US11175418B2
公开(公告)日：2021-11-16
申请号：US16649416
申请日：2018-09-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Andriy Andreyev , Shushen Lin , Bin Zhang , Michael Allen Miller , Xiyun Song , Jinghan Ye , Shekhar Dwivedi , Zhiqiang Hu , Yu-Lung Hsieh , Ilya Brodskiy , Thomas Christopher Bulgrin , Yang-Ming Zhu , Douglas B. McKnight
Abstract: A non-transitory computer-readable medium storing instructions readable and executable by a workstation (18) including at least one electronic processor (20) to perform a quality control (QC) method (100). The method includes: receiving a current QC data set acquired by a pixelated detector (14) and one or more prior QC data sets acquired by the pixelated detector; determining stability levels of detector pixels (16) of the pixelated detector over time from the current QC data set and the one or more prior QC data sets; labeling a detector pixel of the pixelated detector as dead when the stability level determined for the detector pixel is outside of a stability threshold range; and displaying, on a display device (24) operatively connected with the workstation, an identification (28) of the detector pixels labelled as dead.
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公开(公告)号：US10453182B2
公开(公告)日：2019-10-22
申请号：US14363917
申请日：2012-12-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： John Patrick Collins , Chi-Hua Tung , Bin Zhang
Abstract: A database (52) stores image recipient reconstruction profiles each comprising image reconstruction parameter values. An image reconstruction module (30) is configured to reconstruct medical imaging data to generate a reconstructed image. An image reconstruction setup module (50) is configured to retrieve an image recipient reconstruction profile from the database (52) for an intended image recipient associated with a set of medical imaging data and to invoke the image reconstruction module (30) to reconstruct the set of medical imaging data using image reconstruction parameter values of the retrieved image recipient reconstruction profile to generate a reconstructed image for the intended image recipient. A feedback acquisition module (54) is configured to acquire feedback from the intended image recipient pertaining to the reconstructed image for the intended image recipient. A profile updating module (56) is configured to update the image recipient reconstruction profile of the intended image recipient based on the acquired feedback.
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8.发明申请VIRTUAL FRAMES FOR DISTRIBUTED LIST-MODE TIME-OF-FLIGHT RECONSTRUCTION WITH CONTINUOUS BED MOVEMENT 有权用于分布式列表模式的虚拟框架具有连续床移动的飞行时间重建公开(公告)号：US20150260857A1
公开(公告)日：2015-09-17
申请号：US14418486
申请日：2013-07-31
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Bin Zhang , Chi-Hua Tung , John Patrick Collins
CPC classification number: G01T1/2985 , A61B6/037 , G01T1/1647 , G06T11/005
Abstract: A positron emission tomography (PET) system includes a memory (18), a subject support (3), a categorizing unit (20), and a reconstruction unit (22). The memory (18) continuously records detected coincident event pairs detected by PET detectors (4). The subject support (3) supports a subject and moves in a continuous movement through a field of view (10) of the PET detectors (4). The categorizing unit (20) categorizes the recorded coincident pairs into each of a plurality of spatially defined virtual frame (14). The reconstruction unit (22) reconstructs the categorized coincident pairs of each virtual frame into a frame image and combines the frame images into a common elongated image.
Abstract translation: 正电子发射断层摄影（PET）系统包括存储器（18），对象支架（3），分类单元（20）和重建单元（22）。 存储器（18）连续记录由PET检测器（4）检测的检测到的重合事件对。 主体支撑件（3）支撑主体并通过PET检测器（4）的视野（10）连续移动。 分类单元（20）将记录的重合对分类为多个空间定义的虚拟帧（14）中的每一个。 重建单元（22）将每个虚拟帧的分类的重合对重构为帧图像，并将帧图像组合成公共的细长图像。
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公开(公告)号：US11748598B2
公开(公告)日：2023-09-05
申请号：US16758000
申请日：2018-10-16
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Yang-Ming Zhu , Andriy Andreyev , Bin Zhang , Chi-Hua Tung
CPC classification number: A61B6/5205 , A61B6/037 , A61B6/5235 , A61B6/584 , G06N3/045 , G06N3/084
Abstract: An imaging method (100) includes: acquiring first training images of one or more imaging subjects using a first image acquisition device (12); acquiring second training images of the same one or more imaging subjects as the first training images using a second image acquisition device (14) of the same imaging modality as the first imaging device; and training a neural network (NN) (16) to transform the first training images into transformed first training images having a minimized value of a difference metric comparing the transformed first training images and the second training images.
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公开(公告)号：US11158094B2
公开(公告)日：2021-10-26
申请号：US16474576
申请日：2018-01-03
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Bin Zhang , Chuanyong Bai , Shushen Lin , Andriy Andreyev , Zhiqiang Hu
Abstract: A nuclear medicine image reconstruction method generates a reconstructed image (44) by performing iterative image in reconstruction (30, 130) on nuclear medicine imaging data (22). The iterative image reconstruction produces a sequence of update images (34, 36, 134, 136). During the iterative image reconstruction, a standardized uptake value (SUV) transform (40) is applied to convert an update image (34, 36) to an update SUV image (42, 46). The SUV transform scales values of voxels of the update image to SUV values using scaling factors including at least a body size metric and a dose metric. During the iterative image reconstruction, at least one parameter used in an image update of the iterative image reconstruction is adjusted using the update SUV image. For example, a parameter of a prior or filter (38) incorporated into an image reconstruction update step (32) or used in filtering of an update image (36) may be adjusted.
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