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).

  • Publication number: 20210375009
    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.
    Type: Application
    Filed: January 24, 2019
    Publication date: December 2, 2021
    Inventors: Jinghan YE, Xiyun SONG, Chuanyong BAI, Andriy ANDREYEV, Chi-Hua TUNG, Zhiqiang HU
  • Publication number: 20210298701
    Abstract: 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: Application
    Filed: August 13, 2019
    Publication date: September 30, 2021
    Inventors: Andriy ANDREYEV, Douglas B. McKNIGHT, Nathan SERAFINO, Dane PITTOCK, Chuanyong BAI, Chi-Hua TUNG
  • Patent number: 11069098
    Abstract: 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: Grant
    Filed: November 22, 2017
    Date of Patent: July 20, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Shekhar Dwivedi, Andriy Andreyev, Chuanyong Bai, Chi-Hua Tung
  • Publication number: 20210209817
    Abstract: 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: Application
    Filed: February 13, 2017
    Publication date: July 8, 2021
    Inventors: Xiaochuan PAN, Jinghan YE, Amy PERKINS, Chi-Hua TUNG, Zheng ZHANG
  • Patent number: 11017895
    Abstract: 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: Grant
    Filed: January 3, 2019
    Date of Patent: May 25, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Chi-Hua Tung, Shekhar Dwivedi, Yang-Ming Zhu, John Patrick Collins
  • Publication number: 20210027881
    Abstract: 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: Application
    Filed: October 2, 2020
    Publication date: January 28, 2021
    Inventors: Yang-Ming ZHU, Chi-Hua TUNG
  • Publication number: 20200345322
    Abstract: 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: Application
    Filed: November 30, 2018
    Publication date: November 5, 2020
    Inventors: Chuanyong BAI, Andriy ANDREYEV, Yang-Ming ZHU, Bin ZHANG, Chi-Hua TUNG, Douglas MCKNIGHT
  • Patent number: 10799200
    Abstract: 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: Grant
    Filed: August 7, 2014
    Date of Patent: October 13, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Bin Zhang, Chi-Hua Tung
  • Patent number: 10792006
    Abstract: 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: Grant
    Filed: October 28, 2016
    Date of Patent: October 6, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Yang-Ming Zhu, Chi-Hua Tung
  • Publication number: 20200289077
    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.
    Type: Application
    Filed: October 16, 2018
    Publication date: September 17, 2020
    Inventors: Chuanyong BAI, Yang-Ming ZHU, Andriy ANDREYEV, Bin ZHANG, Chi-Hua TUNG
  • Publication number: 20200294285
    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: 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: Application
    Filed: October 19, 2018
    Publication date: September 17, 2020
    Inventors: Xiyun SONG, Andriy ANDREYEV, Chuanyong BAI, Jinghan YE, Chi-Hua TUNG, Bin ZHANG, Xiangyu WU, Changhong DAI, Tianrui GUO, Zhiqiang HU
  • Publication number: 20200066009
    Abstract: 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: Application
    Filed: November 22, 2017
    Publication date: February 27, 2020
    Inventors: Shekar DWIVEDI, Andriy ANDREYEV, Chuanyong BAI, Chi-Hua TUNG
  • Patent number: 10453182
    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.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: October 22, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: John Patrick Collins, Chi-Hua Tung, Bin Zhang
  • Patent number: 10438379
    Abstract: 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: Grant
    Filed: February 18, 2015
    Date of Patent: October 8, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Xiyun Song, Jinghan Ye, Zhiqiang Hu, Changhong Dai, Varun Verma, Chi-Hua Tung
  • Publication number: 20190139271
    Abstract: 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: Application
    Filed: January 3, 2019
    Publication date: May 9, 2019
    Inventors: Chi-Hua TUNG, Shekhar DWIVEDI, Yang-Ming ZHU, John Patrick COLLINS
  • Patent number: 10275906
    Abstract: 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: Grant
    Filed: July 9, 2015
    Date of Patent: April 30, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Chi-Hua Tung, Shekhar Dwivedi, Yang-Ming Zhu, John Patrick Collins
  • Publication number: 20180303449
    Abstract: 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: Application
    Filed: October 28, 2016
    Publication date: October 25, 2018
    Inventors: Yang-Ming ZHU, Chi-Hua TUNG
  • Publication number: 20170206680
    Abstract: 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: Application
    Filed: July 9, 2015
    Publication date: July 20, 2017
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Chi-Hua TUNG, Shekhar DWIVEDI, Yang-Ming ZHU, John Patrick COLLINS
  • Patent number: 9646393
    Abstract: A medical imaging system includes a data store (16) of reconstruction procedures, a selector (24), a reconstructor (14), a fuser (28), and a display (22). The data store (16) of reconstruction procedures identifies a plurality of reconstruction procedures. The selector (24) selects at least two reconstruction procedures from the data store of reconstruction procedures based on a received input, each reconstruction procedure optimized for one or more image characteristics. The reconstructor (14) concurrently performs the selected at least two reconstruction procedures, each reconstruction procedure generates at least one image (26) from the at least one data store of imaging data (12). The fuser (28) fuses the at least two generated medical images to create a medical diagnostic image which includes characteristics from each generated image (26). The display (22) displays the medical diagnostic image.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: May 9, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Sven Prevrhal, Eberhard Sebastian Hansis, Joerg Bredno, Jinghan Ye, Xiyun Song, Chi-Hua Tung, Lingxiong Shao
  • Publication number: 20160350945
    Abstract: 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: Application
    Filed: February 18, 2015
    Publication date: December 1, 2016
    Applicant: Koninklijke Philips N.V.
    Inventors: Xiyun SONG, Jinghan YE, Zhiqiang HU, Changhong DAI, Varun VERMA, Chi-Hua TUNG