Patents by Inventor Eung Je Woo

Eung Je Woo 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).

  • Patent number: 11000204
    Abstract: The present invention relates to a device and method for reconstructing low-frequency conductivity images using MRI without current injection. In the device according to the present invention, low-frequency conductivity is deduced using high-frequency conductivity obtained using MR-EPT, the calculated directional tensor of ions from the water diffusion tensor in a subject, and the volume fractions and diffusion coefficients of the intracellular/extracellular spaces, and low-frequency conductivity images are reconstructed based on the deduced low-frequency conductivity. According to the present invention, low-frequency conductivity images in a subject to be measured such as the human body and an object may be reconstructed using an MRI device without applying current to the subject.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: May 11, 2021
    Assignee: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Eung Je Woo, Oh In Kwon, Hyung Joong Kim, Woo Chul Jeong, Saurav Zaman Khan Sajib
  • Publication number: 20190328276
    Abstract: Disclosed are a method and apparatus for a pulmonary function test, in which a pulmonary function is diagnosed based on vital capacity according to a breathing parameter of a subject and a thorax image according to impedance data, in which a conventional spirometer and electrical impedance tomography (EIT) are used together to collectively process and analyze a global variable obtained at a mouth of a subject and a local variable obtained from an image of an interior of a lung, thereby proposing spirotomometry.
    Type: Application
    Filed: November 15, 2017
    Publication date: October 31, 2019
    Inventors: Eung Je Woo, Tong In Oh
  • Publication number: 20190328277
    Abstract: Disclosed are an apparatus and method for measuring sleep apnea based on images according to impedance data from an upper airway and a thorax of a subject, in which electrical impedance tomography (EIT) using electrodes attached to an upper airway and a thorax is used to generate an image of air distribution inside a lung according to opening and construction of an upper airway to diagnose at least one of among obstructive apnea, central apnea and complex apnea, thereby coming up with a treatment plan.
    Type: Application
    Filed: November 15, 2017
    Publication date: October 31, 2019
    Inventors: Eung Je Woo, Tong In Oh
  • Publication number: 20190328268
    Abstract: Disclosed are an image monitoring apparatus and method for displaying a lung ventilation impedance image and a lung perfusion impedance image based on impedance data measured at a thorax of a subject, and a reference image based on a biometric signal, in which impedance data based on voltage measured at the thorax of the subject is separated into lung ventilation impedance data and lung perfusion impedance data, and dynamic bloodstream change data in a heart and blood vessels by electrical impedance tomography (EIT); and a lung ventilation impedance image, a lung perfusion impedance image, and a heart and blood vessel impedance image, which are obtained by the separation, and a reference image based on a biometric signal sensed at a part of the subject targeted to be examined are displayed according to a pathological condition of the subject.
    Type: Application
    Filed: November 15, 2017
    Publication date: October 31, 2019
    Inventors: Eung Je Woo, Tong In Oh
  • Publication number: 20190298219
    Abstract: Disclosed is a fabric electrode belt for measuring a biometric signal. The fabric electrode belt for measuring a biometric signal according to an embodiment of the disclosure includes: a belt body unit including a stretchable material, and provided with electrodes to be in contact with a subject to be examined; and a circuit unit coupled to the belt body unit and configured to receive an electric signal based on impedance of a subject to be examined, measured by the electrodes, the circuit unit being disposed between the belt body units.
    Type: Application
    Filed: December 1, 2017
    Publication date: October 3, 2019
    Inventors: Eung Je Woo, Tong In Oh
  • Publication number: 20190142296
    Abstract: The present invention relates to a device and method for reconstructing low-frequency conductivity images using MRI without current injection. In the device according to the present invention, low-frequency conductivity is deduced using high-frequency conductivity obtained using MR-EPT, the calculated directional tensor of ions from the water diffusion tensor in a subject, and the volume fractions and diffusion coefficients of the intracellular/extracellular spaces, and low-frequency conductivity images are reconstructed based on the deduced low-frequency conductivity. According to the present invention, low-frequency conductivity images in a subject to be measured such as the human body and an object may be reconstructed using an MRI device without applying current to the subject.
    Type: Application
    Filed: March 29, 2017
    Publication date: May 16, 2019
    Applicant: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Eung Je WOO, Oh In KWON, Hyung Joong KIM, Woo Chul JEONG, Saurav Zaman Khan SAJIB
  • Publication number: 20190076085
    Abstract: The present invention relates to a sleep apnea monitoring system for monitoring the sleeping state of a user by means of impedance tomographic image information about the properties of biological tissue and biological signals of the user's body parts to be monitored. The present invention can be manufactured into a very simple portable device and thus enables monitoring during natural sleep at home. Therefore, the present invention enables utilization of obtained information during a sleeping state for diagnosis of and therapeutic plans for sleep apnea.
    Type: Application
    Filed: March 7, 2017
    Publication date: March 14, 2019
    Applicant: BiLab Co., Ltd.
    Inventors: Eung Je WOO, Tong In OH
  • Publication number: 20190038175
    Abstract: A body fat measurement apparatus, according to the present invention, comprises: an electrode unit which has a plurality of electrodes and can be worn around the body of the subject to be measured; a first measurement unit which is for obtaining a three-dimensional image of the subject's body part to be measured; a second measurement unit which is for measuring the impedance by means of injecting a current into the electrodes; and a control unit which is for restoring the conductivity and permittivity images of the subject by means of the three-dimensional image and the impedance value and thus separately calculating the amount of subcutaneous fat and visceral fat. According to the present invention, measurement accuracy of the subcutaneous fat and visceral fat can be improved even at a low cost.
    Type: Application
    Filed: March 15, 2017
    Publication date: February 7, 2019
    Applicant: BiLab Co., Ltd.
    Inventors: Eung Je WOO, Tong In OH
  • Publication number: 20170079544
    Abstract: The present invention relates to a device for imaging and diagnosing the condition of obstruction of the upper airway, which can image the condition of a change in the upper airway of an OSAS patient occurring during natural sleep by using EIT and can extract information required for diagnosis. The device for imaging and diagnosing the condition of obstruction of the upper airway by using EIT according to the present invention does not require high costs, enables repeated examination to be conducted without the risk of exposure to radioactive rays, and enables examination to be performed over a prolonged period of time in an actual natural sleep state, thereby accurately diagnosing the condition of obstruction of the upper airway.
    Type: Application
    Filed: April 23, 2015
    Publication date: March 23, 2017
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSTIY
    Inventors: Sang Wook KIM, Tong In OH, Oh In KWON, Eung Je WOO
  • Patent number: 8128564
    Abstract: An apparatus and method for imaging a shear modulus within a body is disclosed. A method for imaging a shear modulus in accordance with the present invention includes generating an elastic wave inside an object to be measured; detecting the elastic wave ongoing inside the object to be measured; calculating a shear modulus of the inside of the object to be measured, based on a value obtained by differentiating the detected elastic wave one time; and imaging the inside of the object to be measured, based on the calculated shear modulus.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: March 6, 2012
    Assignee: University-Industry Cooperation Group of Kyunghee University
    Inventors: Oh In Kwon, Eung Je Woo, Chun Jae Park, Hyun Soo Nam
  • Patent number: 7847565
    Abstract: A system for electrical impedance tomography and method thereof are disclosed, by which electrical characteristics within a measurement target can be precisely detected. The present invention includes the steps of injection a current to a measurement target via at least one electrode pair selected form a plurality of electrodes (250) attached to the measurement target, detecting voltage of a surface of the measurement target using a plurality of voltmeters (260) connected to the electrodes that are not selected, respectively, adjusting gains of the voltmeters according to maximum values of the detected voltages, respectively, amplifying the detected voltages using the gain-adjusted voltmeters, respectively, and imaging an internal part of the measurement target based on the amplified voltages.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: December 7, 2010
    Assignee: University-Industry Cooperation Group of Kyunghee University
    Inventors: Eung Je Woo, Dong In Oh, Jin Keun Seo, Oh In Kwon
  • Patent number: 7514921
    Abstract: System for visualizing conductivity and current density distributions including a plurality of current injecting devices (100) for injecting currents into a measuring object; a measuring unit(200) for measuring a magnetic flux density due to the currents injected into a measuring object; an operating unit(300) for selecting one pair of the current injecting devices in succession so as to inject currents of different directions into the measuring object, and calculating directional components of an anisotropic conductivity inside of the measuring object on the basis of the measured magnetic flux density; and displaying means for visualizing an inside of the measuring object by using the calculated directional components of the anisotropic conductivity.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: April 7, 2009
    Assignee: University-Industry Cooperation Group of Kyunghee University
    Inventors: Eung Je Woo, Jin Keun Seo, Oh In Kwon, Tae Seong Kim, Byung II Lee, Suk Ho Lee
  • Publication number: 20090030336
    Abstract: An apparatus for detecting an anomaly and method thereof are disclosed, by which a size and location of an anomaly of a beast cancer and the like can be precisely detected as well as a presence or non-presence of the anomaly based on data measured on a surface of a body. The present invention includes supplying a first frequency voltage having a first frequency to a measurement target, detecting a first signal induced by the first frequency voltage from the measurement target, supplying a second frequency voltage having a second frequency to the measurement target, detecting a second signal induced by the second frequency voltage from the measurement target, correcting the first and second signals based on slopes of the detected first and second signals, and calculating a location and size of the anomaly within the measurement target based on the corrected first and second signals.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 29, 2009
    Applicant: University-Industry Cooperation Group of Kyunghee University
    Inventors: Eung Je Woo, Dong In Oh, Jin Keun Seo, Oh In Kwon
  • Publication number: 20090007674
    Abstract: An apparatus and method for imaging a shear modulus within a body is disclosed. A method for imaging a shear modulus in accordance with the present invention includes generating an elastic wave inside an object to be measured; detecting the elastic wave ongoing inside the object to be measured; calculating a shear modulus of the inside of the object to be measured, based on a value obtained by differentiating the detected elastic wave one time; and imaging the inside of the object to be measured, based on the calculated shear modulus.
    Type: Application
    Filed: April 4, 2008
    Publication date: January 8, 2009
    Applicant: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNGHEE UNIVERSITY
    Inventors: Oh In KWON, Eung Je WOO, Chun Jae PARK, Hyun Soo NAM
  • Patent number: 7440796
    Abstract: System for visualizing conductivity and current density distributions including a plurality of current injecting devices for injecting currents into a measuring object, an MRI scanner for measuring one directional component of a magnetic flux density due to each of the currents injected into a measuring object, an operating part for controlling the current injecting devices so as to inject currents of different directions into the measuring object, and calculating a conductivity distribution and a current density distribution inside of the measuring object by using the one directional component of a magnetic flux density, and displaying means for visualizing the conductivity and current density distributions calculated by the operating part, thereby permitting to visualize the conductivity and the current density of the measuring object more accurately.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: October 21, 2008
    Assignee: Kohwang Foundation, Kohwang Board of Trustee
    Inventors: Eung Je Woo, Jin Keun Seo, Ohin Kwon
  • Publication number: 20080252304
    Abstract: A system for electrical impedance tomography and method thereof are disclosed, by which electrical characteristics within a measurement target can be precisely detected. The present invention includes the steps of injection a current to a measurement target via at least one electrode pair selected form a plurality of electrodes (250) attached to the measurement target, detecting voltage of a surface of the measurement target using a plurality of voltmeters (260) connected to the electrodes that are not selected, respectively, adjusting gains of the voltmeters according to maximum values of the detected voltages, respectively, amplifying the detected voltages using the gain-adjusted voltmeters, respectively, and imaging an internal part of the measurement target based on the amplified voltages.
    Type: Application
    Filed: July 28, 2006
    Publication date: October 16, 2008
    Applicant: University-Industry Cooperation Group of Kyunghee University
    Inventors: Eung Je Woo, Dong In Oh, Jin Keun Seo, Oh In Kwon
  • Publication number: 20070203425
    Abstract: Apparatus and method for detecting a lesion, the method including the steps of applying a voltage to an electrode in contact with a part of a body, sensing signals from an examining part of the body by using probe (14) having a plurality of sensing electrodes (143), and calculating a position and a size of a lesion in the body with reference to the signals sensed thus, whereby detecting not only existence of a lesion, but also a position and a size of the lesion.
    Type: Application
    Filed: April 27, 2005
    Publication date: August 30, 2007
    Applicant: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNGHEE UNIVERSITY
    Inventors: Eung Je Woo, Jin Keun Seo, Oh In Kwon
  • Publication number: 20070088210
    Abstract: System for visualizing conductivity and current density distributions including a plurality of current injecting devices (100) for injecting currents into a measuring object; a measuring unit (200) for measuring a magnetic flux density due to the currents injected into a measuring object; an operating unit (300) for selecting one pair of the current injecting devices in succession so as to inject currents of different directions into the measuring object, and calculating directional components of an anisotropic conductivity inside of the measuring object on the basis of the measured magnetic flux density; and displaying means for visualizing an inside of the measuring object by using the calculated directional components of the anisotropic conductivity.
    Type: Application
    Filed: November 23, 2004
    Publication date: April 19, 2007
    Applicant: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNGHEE UNIVERSITY
    Inventors: Eung Je Woo, Jin Keun Seo, Oh In Kwon, Tae Seong Kim, Byung Il Lee, Suk Ho Lee