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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：US11234667B2
公开(公告)日：2022-02-01
申请号：US16647326
申请日：2018-08-30
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Andriy Andreyev , Xiyun Song , Jinghan Ye , Chuanyong Bai , Zhiqiang Hu , Douglas B. McKnight
Abstract: A non-transitory storage medium storing instructions readable and executable by an imaging workstation (18) including at least one electronic processor (20) to perform an image reconstruction method (100). The method includes: receiving emission imaging data (22) from an image acquisition device (12) wherein the emission imaging data has been filtered using an acquisition energy passband (18); generating filtered imaging data by filtering the emission imaging data with a second energy passband (90) that is narrower than an acquisition energy passband; reconstructing the filtered imaging data to generate an intermediate image; estimating one or more scatter correction factors (SCFs) from the intermediate image; and reconstructing the emission imaging data corrected with the estimated SCFs to generate a reconstructed image.
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公开(公告)号：US11049230B2
公开(公告)日：2021-06-29
申请号：US16325213
申请日：2017-08-22
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Andriy Andreyev , Bin Zhang , Yang-Ming Zhu , Xiyun Song , Jinghan Ye , Zhiqiang Hu
Abstract: Image processing performed by a computer (22) includes iterative image reconstruction or refinement (26, 56) that produces a series of update images ending in an iteratively reconstructed or refined image. A difference image (34, 64) is computed between a first update image (30, 60) and a second update image (32, 62) of the series. The difference image is converted to a feature image (40) and is used in the iterative processing (26, 56) or in post-processing (44) performed on the iteratively reconstructed or refined images or images from different reconstruction or refinement techniques. In another embodiment, first and second image reconstructions (81, 83) are performed to generate respective first and second reconstructed images (80, 82). A difference image (84) is computed between two images each selected from the group: the first reconstructed image, an update image of the first reconstruction, the second reconstructed image, and an update image of the second reconstruction. A feature image is generated from the difference image and used to combine the first and second reconstructed images.
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公开(公告)号：US11009615B2
公开(公告)日：2021-05-18
申请号：US16470730
申请日：2017-12-18
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Andriy Andreyev , Andre Frank Salomon , Andreas Goedicke , Jinghan Ye , Yu-Lung Hsieh , Bin Zhang , Xiyun Song , Manoj Narayanan , Zhiqiang Hu
Abstract: A time of flight (TOF) positron emission tomography (PET) image (38) is generated from TOF PET imaging data (10) acquired of a subject using a TOF PET imaging data acquisition device (6). Iterative image reconstruction (30) of the TOF PET imaging data is performed with TOF localization of counts along respective lines of response (LORs) to iteratively update a reconstructed image (32). Values for at least one regularization or filtering parameter are assigned to the TOF PET imaging data or to voxels of the reconstructed image based on an estimated TOF localization resolution for the TOF PET imaging data or voxels. Regularization (34) or filtering (36) of the reconstructed image is performed using the assigned values for the at least one regularization or filtering parameter. In some embodiments, the varying TOF localization resolution for the TOF PET imaging data or voxels is estimated based on related acquisition characteristics such as count rates or operating temperature of the detectors.
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公开(公告)号：US11354832B2
公开(公告)日：2022-06-07
申请号：US16609890
申请日：2018-05-01
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Andriy Andreyev , Xiyun Song , Jinghan Ye , Bin Zhang , Shekhar Dwivedi , Yanfei Mao , Zhiqiang Hu
Abstract: A non-transitory computer readable medium storing instructions readable and executable by an imaging workstation (14) including at least one electronic processor (16) to perform a dataset generation method (100) operating on emission imaging data acquired of a patient for one or more axial frames at a corresponding one or more bed positions, the method comprising: (a) identifying a frame of interest from the one or more axial frames; (b) generating simulated lesion data by simulating emission imaging data for the frame of interest of at least one simulated lesion placed in the frame of interest; (c) generating simulated frame emission imaging data by simulating emission imaging data for the frame of interest of the patient; (d) determining a normalization factor comprising a ratio of the value of a quantitative metric for the simulated patient data and the value of the quantitative metric for the emission imaging data acquired of the same patient for the frame of interest; and (e) generating a hybrid data set comprising the emission imaging data acquired of the patient for the one or more axial frames at the corresponding one or more bed positions with the frame of interest replaced by a combination of the simulated lesion data scaled by the normalization factor and the emission imaging data acquired of the patient for the frame of interest.
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Patent Agency Ranking
公开(公告)号：US11282242B2
公开(公告)日：2022-03-22
申请号：US16963343
申请日：2019-01-24
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Jinghan Ye , Xiyun Song , Chuanyong Bai , Andriy Andreyev , Chi-Hua Tung , Zhiqiang Hu
IPC: G06T11/00
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: generating, from received imaging data, a plurality of intermediate images reconstructed without scatter correction from data partitioned into different energy windows; generating a fraction of true counts and a fraction of scatter events in the generated intermediate images; generating a final reconstructed image from the intermediate images, the fraction of true counts in the intermediate images, and the fraction of scatter counts in the intermediate images; and at least one of controlling the non-transitory computer readable medium to store the final image and control a display device (24) to display the final image.
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公开(公告)号：US10993103B2
公开(公告)日：2021-04-27
申请号：US16474113
申请日：2018-01-02
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Chuanyong Bai , Andriy Andreyev , Bin Zhang , Xiyun Song , Jinghan Ye , Zhiqiang Hu
IPC: G06T7/00 , G06T11/00 , G16H30/40 , H04W8/14 , H04L29/08 , H04W8/00 , H04W92/20 , H04L29/12 , G06T7/13 , H04W12/00 , H04L29/06 , H04W8/26 , H04W88/08
Abstract: In positron emission tomography (PET) imaging, PET imaging data (22) having TOF localization is reconstructed. TOF image reconstruction (30) is performed on the PET imaging data to produce a TOF reconstructed image (32). The TOF image reconstruction utilizes the TOF localization of the PET imaging data. Non-TOF image reconstruction (40) is also performed on the PET imaging data to produce a non-TOF reconstructed image (42). The non-TOF image reconstruction does not utilize the TOF localization of the PET imaging data. A comparison image (50) is computed which is indicative of differences between the TOF reconstructed image and the non TOF reconstructed image. An adjustment (54) is determined for the TOF image reconstruction based on the comparison image, such as alignment correction of an attenuation map (18), and the TOF image reconstruction is repeated on the PET imaging data with the determined adjustment to produce an adjusted TOF reconstructed image.
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公开(公告)号：US12148070B2
公开(公告)日：2024-11-19
申请号：US16963307
申请日：2019-01-24
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Xiyun Song , Jinghan Ye , Yanfei Mao , Chuanyong Bai , Andriy Andreyev , Gregory Doughty , Leonid Romanov , Zhiqiang Hu
Abstract: An image reconstruction method includes: determining singles rates of radiation detectors in a frame of imaging data detected by the radiation detectors; determining an energy correction factor (Nwgt) for each radiation detector based on an energy spectrum distribution of gamma rays incident on the radiation detector during acquisition of the frame of imaging data; determining a singles live time correction factor for each radiation detector from the singles rate and the energy correction factor; determining a system coincidence live time correction factor from the system singles rate; for each line of response (LOR) connecting pairs of radiation detectors, determining a live time correction factor for the LOR from the determined singles live time correction factors of the pair of radiation detectors connected by the LOR and the determined system coincidence live time correction factor; and reconstructing the frame of imaging data using the determined LOR live time correction factors.
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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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10.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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