公开(公告)号：US20220087564A1

公开(公告)日：2022-03-24

申请号：US17466898

申请日：2021-09-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin-Sun Kim ,  Jae-Chan Jong ,  Hyo-Bong Hong

IPC: A61B5/0515 ,  A61K49/18 ,  H01F1/00 ,  G01R33/48

Abstract: Disclosed herein is an apparatus for imaging nano magnetic particles using a 3D array of small magnets. A field-free region generation apparatus includes a hexahedral housing having an opening formed in the first surface thereof such that a measurement head is inserted into a spacing area, a pair of rectangular-shaped magnets installed respectively on two surfaces facing each other, among four surfaces perpendicular to the first surface of the housing, and a pair of magnet arrays installed respectively on the first surface of the housing and on another surface facing the first surface, each of the magnet arrays including multiple small magnets arranged along the edge of the opening.

公开(公告)号：US11707202B2

公开(公告)日：2023-07-25

申请号：US17466898

申请日：2021-09-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin-Sun Kim ,  Jae-Chan Jong ,  Hyo-Bong Hong

IPC: A61B5/0515 ,  A61K49/18 ,  G01R33/48 ,  H01F1/00 ,  B82Y25/00

CPC classification number: A61B5/0515 ,  A61K49/1818 ,  G01R33/481 ,  H01F1/0045 ,  B82Y25/00

Abstract: Disclosed herein is an apparatus for imaging nano magnetic particles using a 3D array of small magnets. A field-free region generation apparatus includes a hexahedral housing having an opening formed in the first surface thereof such that a measurement head is inserted into a spacing area, a pair of rectangular-shaped magnets installed respectively on two surfaces facing each other, among four surfaces perpendicular to the first surface of the housing, and a pair of magnet arrays installed respectively on the first surface of the housing and on another surface facing the first surface, each of the magnet arrays including multiple small magnets arranged along the edge of the opening.

公开(公告)号：US11561270B2

公开(公告)日：2023-01-24

申请号：US16939983

申请日：2020-07-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae-Chan Jong ,  Seung-Min Choi ,  Hyo-Bong Hong

IPC: G01R33/12 ,  G01R33/34 ,  A61B5/0515

Abstract: Disclosed herein are an apparatus and method for imaging nano magnetic particles. The apparatus may include a measurement head in which a through hole for accommodating a sample including nano magnetic particles is formed and in which an excitation coil and a detection coil are installed, a field-free region generation unit for forming a field-free region, in which there are few or no magnetic fields, in a spacing area between the identical magnetic poles that face each other, and a control unit for applying a signal to the excitation coil when the measurement head is located inside the spacing area of the field-free region generation unit, controlling the field-free region so as to move in the sample, and imaging the 3D positional distribution of the nano magnetic particles included in the sample based on a detection signal output from the detection coil.

公开(公告)号：US11480634B2

公开(公告)日：2022-10-25

申请号：US17318753

申请日：2021-05-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eul-Gyoon Lim ,  Jin-Sun Kim ,  Chang-Beom Kim ,  Jae-Chan Jong ,  Seung-Min Choi ,  Hyo-Bong Hong

IPC: G01R33/12 ,  A61B5/0515 ,  G01B21/22

Abstract: Disclosed herein is a nano-magnetic-particle-imaging apparatus, including a measurement head including excitation and detection coils and accommodating a sample bed for a sample including nano magnetic particles; a gradient magnetic field generation unit for generating a magnetic field having a strength equal to or greater than that of the saturation magnetic field of the nano magnetic particles in a spacing area between identical magnetic poles facing each other and forming a field-free region in a portion thereof; a first driving unit for linearly moving the sample bed; a second driving unit for rotating the gradient magnetic field generation unit in a plane; a third driving unit for linearly reciprocating the gradient magnetic field generation unit; and a control unit for applying a signal to the excitation coil, controlling the driving units, and imaging 3D distribution of the nano magnetic particles based on a detection signal output from the detection coil.

公开(公告)号：US11035710B2

公开(公告)日：2021-06-15

申请号：US16554326

申请日：2019-08-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyo-Bong Hong ,  Jae-Chan Jong ,  Seung-Min Choi

IPC: G01F1/716

Abstract: Disclosed herein are a method and apparatus for measuring flow using an electromagnetic resonance phenomenon. The flowmeter includes an RF resonator in the form of a cylinder into which a transmission antenna for forming a magnetic field in a preset frequency range and a reception antenna for measuring a response signal are inserted, the RF resonator being shielded from an external magnetic field; and a processor for measuring the flow in a pipe that passes through the RF resonator based on the response signal. The RF resonator includes circular holes in the two bases of the cylinder so as to enable the pipe to pass through the RF resonator, and is formed with a first body and a second body, which are split in the height direction of the cylinder and are coupled using a coupling member so as to wrap the outer circumferential surface of the pipe.