Patents by Inventor Woo Hyun Nam

Woo Hyun Nam 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: 20170100087
    Abstract: Sensor coupled to the ultrasound probe provides position information related to an ultrasound imaging position in the object. A processor performs first registration between the medical image and the ultrasound image based on the anatomical feature in the ultrasound image and a medical image of the object acquired by imaging modality different from the ultrasound apparatus, obtains first registration information which provides a relationship between a coordinate system of the medical image and a coordinate system of the ultrasound image based on the first registration, performs second registration between the sensor and the medical image based on the position information and the first registration information, and obtains second registration information based on the second registration. A display displays a portion of the medical image corresponding to the ultrasound imaging position based on the second registration information. The medical image includes one among SPECT, PET, MR, PET-CT, and PET-MR image.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 13, 2017
    Applicants: SAMSUNG MEDISON CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Gyu HYUN, Jong Beom RA, Duhgoon LEE, Woo Hyun NAM, Won Chul BANG
  • Patent number: 9582906
    Abstract: The present invention relates to a method for motion compensation and state-of-motion specific attenuation correction of positron tomography images by using a small number of low-radiation-dose computer tomography images.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 28, 2017
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong-beom Ra, Woo-hyun Nam, Il-jun Ahn, Ji-hye Kim, Yong-jin Jang, Young-Zoon Park
  • Patent number: 9563949
    Abstract: A method of medical image registration includes obtaining a first medical image generated before a medical surgery; obtaining a second medical image generated in real time during the medical surgery; extracting landmark points of at least two adjacent anatomical objects recognizable in the second medical image among a plurality of anatomical objects near an organ of interest of a patient from the first medical image and the second medical image; and registering the first medical image and the second medical image based on a geometrical correlation among the adjacent anatomical objects indicated by the landmark points of the first medical image and a geometrical correlation among the adjacent anatomical objects indicated by the landmark points of the second medical image.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: February 7, 2017
    Assignees: Samsung Electronics Co., Ltd., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Young-kyoo Hwang, Jung-bae Kim, Won-chul Bang, Do-kyoon Kim, Jong-beom Ra, Woo-hyun Nam, Chi-jun Weon
  • Patent number: 9545242
    Abstract: Sensor coupled to the ultrasound probe provides position information related to an ultrasound imaging position in the object. A processor performs first registration between the medical image and the ultrasound image based on the anatomical feature in the ultrasound image and a medical image of the object acquired by imaging modality different from the ultrasound apparatus, obtains first registration information which provides a relationship between a coordinate system of the medical image and a coordinate system of the ultrasound image based on the first registration, performs second registration between the sensor and the medical image based on the position information and the first registration information, and obtains second registration information based on the second registration. A display may display a portion of the medical image corresponding to the ultrasound imaging position based on the second registration information. The medical image includes one of SPECT, PET, MR, PET-CT, and PET-MR image.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: January 17, 2017
    Assignees: SAMSUNG MEDISON CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Gyu Hyun, Jong Beom Ra, Duhgoon Lee, Woo Hyun Nam, Won Chul Bang
  • Publication number: 20170011500
    Abstract: A medical imaging apparatus includes an ultrasound probe to transmit and receive an ultrasound signal to obtain an ultrasound image of an object; a sensor coupled to the ultrasound probe to provide a position information related to an ultrasound imaging position in the object; and a processor to extract a certain anatomical feature from the ultrasound image and the certain anatomical feature from a medical image of the object acquired by an imaging modality different from an ultrasound apparatus, perform a first registration between the medical image and the ultrasound image based on the certain anatomical feature, perform a second registration between the sensor and the medical image based on the position information and the first registration, and control a display to display a portion of the medical image corresponding to the ultrasound imaging position based on the second registration.
    Type: Application
    Filed: September 26, 2016
    Publication date: January 12, 2017
    Applicants: SAMSUNG MEDISON CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Gyu HYUN, Jong Beom RA, Duhgoon LEE, Woo Hyun NAM
  • Patent number: 9468422
    Abstract: Sensor coupled to the ultrasound probe provides position information related to an ultrasound imaging position in the object. A processor performs first registration between the medical image and the ultrasound image based on the anatomical feature in the ultrasound image and a medical image of the object acquired by imaging modality different from the ultrasound apparatus, obtains first registration information which provides a relationship between a coordinate system of the medical image and a coordinate system of the ultrasound image based on the first registration, performs second registration between the sensor and the medical image based on the position information and the first registration information, and obtains second registration information based on the second registration. A display may display a portion of the medical image corresponding to the ultrasound imaging position based on the second registration information.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: October 18, 2016
    Assignees: SAMSUNG MEDISON CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Gyu Hyun, Jong Beom Ra, Duhgoon Lee, Woo Hyun Nam
  • Publication number: 20160171726
    Abstract: A method of reconstructing a tomography image and a tomography apparatus configured to reconstruct a tomography image are provided. Tomography data corresponding to a moving object is acquired by performing a tomography scan on the object, and a tomography image is reconstructed using prior images obtained based on the acquired tomography data.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 16, 2016
    Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Woo-hyun NAM, Jong Beom RA, Yongjin CHANG, Yong-sup PARK, Jae-sung LEE, Yunje CHO
  • Publication number: 20160151036
    Abstract: A medical imaging apparatus includes a data acquirer configured to acquire measured data acquired by detecting an X-ray transmitted by an X-ray source to an object, and an image processor configured to acquire an initial image based on the measured data, alternately estimate region of interest (ROI)-outside measured data and ROI-inside measured data based on the measured data and the initial image, and acquire a reconstructed image based on the ROI-inside measured data.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 2, 2016
    Inventors: Woo-hyun NAM, Yong-sup PARK, Jae-sung LEE, Yun-sub JUNG, Yoon-mi HONG
  • Publication number: 20160007973
    Abstract: Sensor coupled to the ultrasound probe provides position information related to an ultrasound imaging position in the object. A processor performs first registration between the medical image and the ultrasound image based on the anatomical feature in the ultrasound image and a medical image of the object acquired by imaging modality different from the ultrasound apparatus, obtains first registration information which provides a relationship between a coordinate system of the medical image and a coordinate system of the ultrasound image based on the first registration, performs second registration between the sensor and the medical image based on the position information and the first registration information, and obtains second registration information based on the second registration. A display may display a portion of the medical image corresponding to the ultrasound imaging position based on the second registration information. The medical image includes one of SPECT, PET, MR, PET-CT, and PET-MR image.
    Type: Application
    Filed: September 22, 2015
    Publication date: January 14, 2016
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, SAMSUNG MEDISON CO., LTD.
    Inventors: Dong-gyu HYUN, Jong-bum RA, Duhgoon LEE, Woo-hyun NAM, Won-chul BANG
  • Publication number: 20160007974
    Abstract: Sensor coupled to the ultrasound probe provides position information related to an ultrasound imaging position in the object. A processor performs first registration between the medical image and the ultrasound image based on the anatomical feature in the ultrasound image and a medical image of the object acquired by imaging modality different from the ultrasound apparatus, obtains first registration information which provides a relationship between a coordinate system of the medical image and a coordinate system of the ultrasound image based on the first registration, performs second registration between the sensor and the medical image based on the position information and the first registration information, and obtains second registration information based on the second registration. A display may display a portion of the medical image corresponding to the ultrasound imaging position based on the second registration information.
    Type: Application
    Filed: September 22, 2015
    Publication date: January 14, 2016
    Applicants: SAMSUNG MEDISON CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong-gyu HYUN, Jong-bum RA, Duhgoon LEE, Woo-hyun NAM, Won-chul BANG
  • Patent number: 9186062
    Abstract: Embodiments for providing a 2-dimensional (D) computerized-tomography (CT) image corresponding to a 2-D ultrasound image through image registration between 3-D ultrasound and CT images are disclosed. An imaging system comprises a CT imaging unit, an ultrasound image forming unit, a storing unit, a processor and a display unit. The processor extracts the 2-D CT image from the 3-D ultrasound-CT registered image by performing a rigid-body transform upon the 3-D ultrasound image and calculating similarities between reference images and the 2-D ultrasound images, wherein the reference images are obtained through the rigid-body transform.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: November 17, 2015
    Assignee: SAMSUNG MEDISON CO., LTD.
    Inventors: Dong-Gyu Hyun, Jong-Beom Ra, Duhgoon Lee, Woo Hyun Nam
  • Publication number: 20150289855
    Abstract: There is disclosed an embodiment for performing a calibration of a sensor by using an image registration between a three-dimensional ultrasound image and computerized tomography (CT) image. An ultrasound image forming unit includes an ultrasound probe and forms a three-dimensional ultrasound image of a target object. A sensor is coupled to the ultrasound probe. A memory stores a three-dimensional computed tomography (CT) image of the target object and position information on a position between the three-dimensional ultrasound image and the sensor. A processor performs image registration between the three-dimensional CT image and the three-dimensional ultrasound image to form a first transformation function for transforming a position of the sensor to a corresponding position on the three-dimensional CT image and performs calibration of the sensor by applying the position information to the first transformation function.
    Type: Application
    Filed: June 26, 2015
    Publication date: October 15, 2015
    Inventors: Dong Gyu HYUN, Jong Beom RA, Duhgoon LEE, Woo Hyun NAM
  • Publication number: 20150289848
    Abstract: A medical image registration method and apparatus are described. By performance of a medical image registration method, a highly accurate registered image, in which breathing deformation information is considered, may be obtained by generation of non-real-time medical images in which the breathing deformation information is reflected before a medical procedure is conducted and by rigid registration of a real-time medical image and the generated non-real-time medical images during the medical procedure.
    Type: Application
    Filed: January 15, 2015
    Publication date: October 15, 2015
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youngkyoo HWANG, Jungbae KIM, Youngtaek OH, Wonchul BANG, Jong Beom RA, Woo Hyun NAM, Chijun WOEN
  • Publication number: 20150221104
    Abstract: The present invention relates to a method for motion compensation, and state-of-motion specific attenuation correction of positron tomography images by using a small number of low-radiation-dose computer tomography images.
    Type: Application
    Filed: December 14, 2012
    Publication date: August 6, 2015
    Inventors: Jong-beom Ra, Woo-hyun Nam, Il-jun Ahn, Ji-hye Kim, Yong-jin Jang, Young-Zoon Park
  • Patent number: 9082178
    Abstract: There is disclosed an embodiment for performing a calibration of a sensor by using an image registration between a three-dimensional ultrasound image and computerized tomography (CT) image. An ultrasound image forming unit includes an ultrasound probe and forms a three-dimensional ultrasound image of a target object. A sensor is coupled to the ultrasound probe. A memory stores a three-dimensional computed tomography (CT) image of the target object and position information on a position between the three-dimensional ultrasound image and the sensor. A processor performs image registration between the three-dimensional CT image and the three-dimensional ultrasound image to form a first transformation function for transforming a position of the sensor to a corresponding position on the three-dimensional CT image and performs calibration of the sensor by applying the position information to the first transformation function.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 14, 2015
    Assignee: SAMSUNG MEDISON CO., LTD.
    Inventors: Dong Gyu Hyun, Jong Beom Ra, Duhgoon Lee, Woo Hyun Nam
  • Publication number: 20140072196
    Abstract: A method of medical image registration includes obtaining a first medical image generated before a medical surgery; obtaining a second medical image generated in real time during the medical surgery; extracting landmark points of at least two adjacent anatomical objects recognizable in the second medical image among a plurality of anatomical objects near an organ of interest of a patient from the first medical image and the second medical image; and registering the first medical image and the second medical image based on a geometrical correlation among the adjacent anatomical objects indicated by the landmark points of the first medical image and a geometrical correlation among the adjacent anatomical objects indicated by the landmark points of the second medical image.
    Type: Application
    Filed: June 7, 2013
    Publication date: March 13, 2014
    Inventors: Young-kyoo Hwang, Jung-bae Kim, Won-chul Bang, Do-kyoon Kim, Jong-beom Ra, Woo-hyun Nam, Chi-jun Weon
  • Publication number: 20130231559
    Abstract: Embodiments for providing a 2-dimensional (D) computerized-tomography (CT) image corresponding to a 2-D ultrasound image through image registration between 3-D ultrasound and CT images are disclosed. An imaging system comprises a CT imaging unit, an ultrasound image forming unit, a storing unit, a processor and a display unit. The processor extracts the 2-D CT image from the 3-D ultrasound-CT registered image by performing a rigid-body transform upon the 3-D ultrasound image and calculating similarities between reference images and the 2-D ultrasound images, wherein the reference images are obtained through the rigid-body transform.
    Type: Application
    Filed: April 22, 2013
    Publication date: September 5, 2013
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, MEDISON CO., LTD.
    Inventors: Dong-Gyu HYUN, Jong-Beom RA, Duhgoon LEE, Woo Hyun NAM
  • Patent number: 8447383
    Abstract: Embodiments for providing a 2-dimensional (D) computerized-tomography (CT) image corresponding to a 2-D ultrasound image through image registration between 3-D ultrasound and CT images are disclosed. An imaging system comprises a CT imaging unit, an ultrasound image forming unit, a storing unit, a processor and a display unit. The processor extracts the 2-D CT image from the 3-D ultrasound-CT registered image by performing a rigid-body transform upon the 3-D ultrasound image and calculating similarities between reference images and the 2-D ultrasound images, wherein the reference images are obtained through the rigid-body transform.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: May 21, 2013
    Assignees: Medison Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Dong Gyu Hyun, Jong Beom Ra, Duhgoon Lee, Woo Hyun Nam
  • Publication number: 20130101193
    Abstract: A positron emission tomography (PET) image attenuation correction method may be provided. The PET image attenuation correction method may include obtaining n three-dimensional (3D) magnetic resonance (MR) images and n 3D PET images classified based on a breathing state of an examined patient, generating attenuation correction maps with respect to the n 3D MR images using a single computed tomography (CT) image, obtained in advance, associated with the patient, correcting attenuation of the n 3D PET images based on the generated attenuation correction maps, and generating a single PET image by combining the n attenuation-corrected 3D PET images.
    Type: Application
    Filed: October 20, 2011
    Publication date: April 25, 2013
    Inventors: Jong Beom RA, Woo Hyun Nam, Kye Young Jeong, Duhgoon Lee, Ji Hye Kim
  • Patent number: 8369597
    Abstract: There are disclosed embodiments for non-rigid image registration between 3-dimensional ultrasound and CT images by using intensity and gradient information of vessels and diaphragm. An ultrasound image forming unit transmits/receives ultrasound signals to/from a target object to thereby output electrical receive signals, and forms 3-dimensional ultrasound images based on the electrical receive signals. A CT image forming unit forms 3-dimensional CT images of the target object. A registration unit determines first and second objective functions associated with diaphragm and vessel regions of the target object, respectively, based on intensity and gradient information upon portions corresponding to the diaphragm and vessel regions in each of the 3-dimensional ultrasound and CT images. The registration unit performs non-rigid image registration between the 3-dimensional ultrasound images and the 3-dimensional CT images based on the first and second objective functions.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: February 5, 2013
    Assignees: Medison Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Dong Gyu Hyun, Jong Beom Ra, Duhgoon Lee, Woo Hyun Nam