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：US11255932B2

公开(公告)日：2022-02-22

申请号：US16572254

申请日：2019-09-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyo-Bong Hong ,  Jae-Chan Jeong ,  Seung-Min Choi ,  Jin-Sun Kim

IPC: G01R33/12 ,  G01R33/385

Abstract: Disclosed herein are a magnetic-field-generating coil system, an imaging system having the magnetic-field-generating coil system, and a method for operating the imaging system. The method for operating an imaging system includes generating multiple Linear Gradient Fields (LGFs) in respective axial directions by controlling coil currents, and acquiring MRI information or Magnetic Particle Imaging (MPI) information about an object while moving the multiple LGFs by varying the coil currents.

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：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.