Patents by Inventor Chi-Hua Tung
Chi-Hua Tung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11806182Abstract: A device (10) for performing an amyloid assessment includes a radiation detector assembly (12) including at least one radiation detector (14). At least one electronic processor (20) is programmed to: detect radiation counts over a data acquisition time interval using the radiation detector assembly; compute at least one current count metric from the detected radiation counts; store the at least one current count metric associated with a current test date in a non-transitory storage medium (26); and determine an amyloid metric based on a comparison of the at least one current count metric with a count metric stored in the non-transitory storage medium associated with an earlier test date.Type: GrantFiled: August 13, 2019Date of Patent: November 7, 2023Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Andriy Andreyev, Douglas B. McKnight, Nathan Serafino, Dane Pittock, Chuanyong Bai, Chi-Hua Tung
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Patent number: 11748598Abstract: 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.Type: GrantFiled: October 16, 2018Date of Patent: September 5, 2023Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Chuanyong Bai, Yang-Ming Zhu, Andriy Andreyev, Bin Zhang, Chi-Hua Tung
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Patent number: 11594321Abstract: In a multi-session imaging study, information from a previous imaging session is stored in a Binary Large Object (BLOB). Current emission imaging data are reconstructed into a non-attenuation corrected (NAC) current emission image. A spatial transform is generated aligning a previous NAC emission image from the BLOB to the current NAC emission image. A previous computed tomography (CT) image from the BLOB is warped using the spatial transform, and the current emission imaging data are reconstructed with attenuation correction using the warped CT image. Alternatively, low dose current emission imaging data and a current CT image are acquired, a spatial transform is generated aligning the previous CT image to the current CT image, a previous attenuation corrected (AC) emission image from the BLOB is warped using the spatial transform, and the current emission imaging data are reconstructed using the current CT image with the warped AC emission image as prior.Type: GrantFiled: October 2, 2020Date of Patent: February 28, 2023Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Yang-Ming Zhu, Chi-Hua Tung
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Patent number: 11282242Abstract: 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.Type: GrantFiled: January 24, 2019Date of Patent: March 22, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Jinghan Ye, Xiyun Song, Chuanyong Bai, Andriy Andreyev, Chi-Hua Tung, Zhiqiang Hu
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Patent number: 11270479Abstract: In an emission imaging method, emission imaging data are acquired for a subject using an emission imaging scanner (10) including radiation detectors (12). The emission imaging data are reconstructed to generate a reconstructed image by executing a constrained optimization program including a measure of data fidelity between the acquired emission imaging data an a reconstruct-image transformed by a data model of the imaging scanner to emission imaging data. During the reconstructing, each iteration of the constrained optimization program is constrained by an image variability constraint. The reconstructed image is displayed the reconstructed image on a display device. The emission imaging may be positron emission tomography (PET) imaging data, optionally acquired using a sparse detector array. The image variability constraint may be a constraint that an image total variation (image TV) of a latent image defined using a Gaussian blurring matrix be less than a maximum value.Type: GrantFiled: February 13, 2017Date of Patent: March 8, 2022Assignees: KONINKLIJKE PHILIPS N.V., UNIVERSITY OF CHICAGOInventors: Xiaochuan Pan, Jinghan Ye, Amy Perkins, Chi-Hua Tung, Zheng Zhang
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Publication number: 20210375009Abstract: 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.Type: ApplicationFiled: January 24, 2019Publication date: December 2, 2021Inventors: Jinghan YE, Xiyun SONG, Chuanyong BAI, Andriy ANDREYEV, Chi-Hua TUNG, Zhiqiang HU
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Publication number: 20210298701Abstract: A device (10) for performing an amyloid assessment includes a radiation detector assembly (12) including at least one radiation detector (14). At least one electronic processor (20) is programmed to: detect radiation counts over a data acquisition time interval using the radiation detector assembly; compute at least one current count metric from the detected radiation counts; store the at least one current count metric associated with a current test date in a non-transitory storage medium (26); and determine an amyloid metric based on a comparison of the at least one current count metric with a count metric stored in the non-transitory storage medium associated with an earlier test date.Type: ApplicationFiled: August 13, 2019Publication date: September 30, 2021Inventors: Andriy ANDREYEV, Douglas B. McKNIGHT, Nathan SERAFINO, Dane PITTOCK, Chuanyong BAI, Chi-Hua TUNG
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Patent number: 11069098Abstract: An imaging data set (22) comprising detected counts along lines of response (LORs) is reconstructed (24) to generate a full-volume image at a standard resolution. A region selection graphical user interface (GUI) (26) is provided via which a user-chosen region of interest (ROI) is defined in the full-volume image, and this is automatically adjusted by identifying an anatomical feature corresponding to the user-chosen ROI and adjusting the user-chosen ROI to improve alignment with that feature. A sub-set (32) of the counts of the imaging data set is selected (30) for reconstructing the ROI, and only the selected sub-set is reconstructed (34) to generate a ROI image (36) representing the ROI at a higher resolution than the standard resolution. A fraction of the sub-set of counts may be reconstructed using different reconstruction algorithms (40) to generate corresponding sample ROI images, and a reconstruction algorithm selection graphical user interface (42) employs these sample ROI images.Type: GrantFiled: November 22, 2017Date of Patent: July 20, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Shekhar Dwivedi, Andriy Andreyev, Chuanyong Bai, Chi-Hua Tung
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Publication number: 20210209817Abstract: In an emission imaging method, emission imaging data are acquired for a subject using an emission imaging scanner (10) including radiation detectors (12). The emission imaging data are reconstructed to generate a reconstructed image by executing a constrained optimization program including a measure of data fidelity between the acquired emission imaging data an a reconstruct-image transformed by a data model of the imaging scanner to emission imaging data. During the reconstructing, each iteration of the constrained optimization program is constrained by an image variability constraint. The reconstructed image is displayed the reconstructed image on a display device. The emission imaging may be positron emission tomography (PET) imaging data, optionally acquired using a sparse detector array. The image variability constraint may be a constraint that an image total variation (image TV) of a latent image defined using a Gaussian blurring matrix be less than a maximum value.Type: ApplicationFiled: February 13, 2017Publication date: July 8, 2021Inventors: Xiaochuan PAN, Jinghan YE, Amy PERKINS, Chi-Hua TUNG, Zheng ZHANG
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Patent number: 11017895Abstract: A diagnostic imaging system retrieves data (206) from a plurality of accessible data sources, the accessible data sources storing data including physiological data describing a subject to be imaged, a nature of a requested diagnostic image, image preferences of a clinician who requested the diagnostic image, and previously reconstructed images of the requested nature of the subject and/or other subjects, reconstruction parameters and/or sub-routines used to reconstruct the previously reconstructed images. The system analyzes (6, 12) the retrieved data to automatically generate reconstruction parameters and/or sub-steps specific to the nature of the requested diagnostic image, the subject, and the clinician image preferences. The system controls a display device (10, 216) to display the generated reconstruction parameters and/or sub-routines to the user for a user selection.Type: GrantFiled: January 3, 2019Date of Patent: May 25, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Chi-Hua Tung, Shekhar Dwivedi, Yang-Ming Zhu, John Patrick Collins
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Publication number: 20210027881Abstract: In a multi-session imaging study, information from a previous imaging session is stored in a Binary Large Object (BLOB). Current emission imaging data are reconstructed into a non-attenuation corrected (NAC) current emission image. A spatial transform is generated aligning a previous NAC emission image from the BLOB to the current NAC emission image. A previous computed tomography (CT) image from the BLOB is warped using the spatial transform, and the current emission imaging data are reconstructed with attenuation correction using the warped CT image. Alternatively, low dose current emission imaging data and a current CT image are acquired, a spatial transform is generated aligning the previous CT image to the current CT image, a previous attenuation corrected (AC) emission image from the BLOB is warped using the spatial transform, and the current emission imaging data are reconstructed using the current CT image with the warped AC emission image as prior.Type: ApplicationFiled: October 2, 2020Publication date: January 28, 2021Inventors: Yang-Ming ZHU, Chi-Hua TUNG
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Publication number: 20200345322Abstract: A positron emission tomography (PET) imaging device (10) includes a plurality of PET detector modules (18); and a robotic gantry (20) operatively connected to the PET detector modules. The robotic gantry is configured to control a position of each PET detector module along at least two of an axial axis, a radial axis, and a tangential axis of the corresponding PET detector module.Type: ApplicationFiled: November 30, 2018Publication date: November 5, 2020Inventors: Chuanyong BAI, Andriy ANDREYEV, Yang-Ming ZHU, Bin ZHANG, Chi-Hua TUNG, Douglas MCKNIGHT
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Patent number: 10799200Abstract: A nuclear scanner includes an annular support structure (12) which supports a plurality of radiation detector units (14), each detector unit including crystals (52), tiles (66) containing an array of crystals, or modules (14) of tiles. The detector units define annular ranks of crystals, and the annular ranks of crystals define spaces between the ranks. In another embodiment, the crystals define axial spaces between crystals. Separate rings of crystals have axial spaces that are staggered such that no area of the imaging region is missed. The spaces between the detector units may be adjusted to form uniform or non-uniform spacing. Moving the patient through the annular support structure compensates for reduced sampling under the spaces between ranks.Type: GrantFiled: August 7, 2014Date of Patent: October 13, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Bin Zhang, Chi-Hua Tung
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Patent number: 10792006Abstract: In a multi-session imaging study, information from a previous imaging session is stored in a Binary Large Object (BLOB). Current emission imaging data are reconstructed into a non-attenuation corrected (NAC) current emission image. A spatial transform is generated aligning a previous NAC emission image from the BLOB to the current NAC emission image. A previous computed tomography (CT) image from the BLOB is warped using the spatial transform, and the current emission imaging data are reconstructed with attenuation correction using the warped CT image. Alternatively, low dose current emission imaging data and a current CT image are acquired, a spatial transform is generated aligning the previous CT image to the current CT image, a previous attenuation corrected (AC) emission image from the BLOB is warped using the spatial transform, and the current emission imaging data are reconstructed using the current CT image with the warped AC emission image as prior.Type: GrantFiled: October 28, 2016Date of Patent: October 6, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Yang-Ming Zhu, Chi-Hua Tung
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Publication number: 20200294285Abstract: 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: operating a positron emission tomography (PET) imaging device (12) to acquire imaging data on a frame by frame basis for frames along an axial direction with neighboring frames overlapping along the axial direction wherein the frames include a frame (k), a preceding frame (k?1) overlapping the frame (k), and a succeeding frame (k+1) overlapping the frame (k); reconstructing an image of the frame (k) using imaging data from the frame (k), the preceding frame (k?1), and the succeeding frame (k+1).Type: ApplicationFiled: October 19, 2018Publication date: September 17, 2020Inventors: Xiyun SONG, Andriy ANDREYEV, Chuanyong BAI, Jinghan YE, Chi-Hua TUNG, Bin ZHANG, Xiangyu WU, Changhong DAI, Tianrui GUO, Zhiqiang HU
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Publication number: 20200289077Abstract: 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.Type: ApplicationFiled: October 16, 2018Publication date: September 17, 2020Inventors: Chuanyong BAI, Yang-Ming ZHU, Andriy ANDREYEV, Bin ZHANG, Chi-Hua TUNG
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Publication number: 20200066009Abstract: An imaging data set (22) comprising detected counts along lines of response (LORs) is reconstructed (24) to generate a full-volume image at a standard resolution. A region selection graphical user interface (GUI) (26) is provided via which a user-chosen region of interest (ROI) is defined in the full-volume image, and this is automatically adjusted by identifying an anatomical feature corresponding to the user-chosen ROI and adjusting the user-chosen ROI to improve alignment with that feature. A sub-set (32) of the counts of the imaging data set is selected (30) for reconstructing the ROI, and only the selected sub-set is reconstructed (34) to generate a ROI image (36) representing the ROI at a higher resolution than the standard resolution. A fraction of the sub-set of counts may be reconstructed using different reconstruction algorithms (40) to generate corresponding sample ROI images, and a reconstruction algorithm selection graphical user interface (42) employs these sample ROI images.Type: ApplicationFiled: November 22, 2017Publication date: February 27, 2020Inventors: Shekar DWIVEDI, Andriy ANDREYEV, Chuanyong BAI, Chi-Hua TUNG
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Patent number: 10453182Abstract: 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.Type: GrantFiled: December 12, 2012Date of Patent: October 22, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: John Patrick Collins, Chi-Hua Tung, Bin Zhang
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Patent number: 10438379Abstract: A system (10) and a method (100) iteratively reconstruct an image of a target volume of a subject. In each iteration of a plurality of iterations, an estimate image of the target volume (54) is forward projected (58) and compared (62) to received event data (44) to determine a discrepancy (64). The discrepancy (64) is back projected (66) and the back projection (68) updates (70) the estimate image (54). In at least one iteration, the estimate image (54) is filtered (52) in the image domain prior to being back projected.Type: GrantFiled: February 18, 2015Date of Patent: October 8, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Xiyun Song, Jinghan Ye, Zhiqiang Hu, Changhong Dai, Varun Verma, Chi-Hua Tung
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Publication number: 20190139271Abstract: A diagnostic imaging system retrieves data (206) from a plurality of accessible data sources, the accessible data sources storing data including physiological data describing a subject to be imaged, a nature of a requested diagnostic image, image preferences of a clinician who requested the diagnostic image, and previously reconstructed images of the requested nature of the subject and/or other subjects, reconstruction parameters and/or sub-routines used to reconstruct the previously reconstructed images. The system analyzes (6, 12) the retrieved data to automatically generate reconstruction parameters and/or sub-steps specific to the nature of the requested diagnostic image, the subject, and the clinician image preferences. The system controls a display device (10, 216) to display the generated reconstruction parameters and/or sub-routines to the user for a user selection.Type: ApplicationFiled: January 3, 2019Publication date: May 9, 2019Inventors: Chi-Hua TUNG, Shekhar DWIVEDI, Yang-Ming ZHU, John Patrick COLLINS