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公开(公告)号：US20200182952A1
公开(公告)日：2020-06-11
申请号：US16572254
申请日：2019-09-16
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.
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公开(公告)号：US20190162801A1
公开(公告)日：2019-05-30
申请号：US16205044
申请日：2018-11-29
Inventor： Hyo-Bong HONG , Jae-Chan JEONG , Seung-Min CHOI , Chang-Beom KIM
IPC: G01R33/36 , G01R33/381 , G01R33/48
Abstract: Disclosed herein are a method for modifying a magnetic field using magnetic nanoparticles and an apparatus therefor. The method for modifying a magnetic field includes applying current to a single solenoid coil or to two parallel solenoid coils, measuring a strength of a magnetic field generated by the current at a preset target location using a measurement sensor, and controlling the strength of the magnetic field based on a concentration of a magnetic nanoparticle sample mounted in the single solenoid coil or the two solenoid coils so that the strength of the magnetic field matches a preset target value.
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公开(公告)号：US20180202973A1
公开(公告)日：2018-07-19
申请号：US15870565
申请日：2018-01-12
Inventor： Hyo-Bong HONG , Jae Chan JEONG , Seung-Min CHOI , Chang-Beom KIM
IPC: G01N27/90
CPC classification number: G01N27/902 , G01N27/82 , G01N27/9033
Abstract: Disclosed herein are a method and apparatus for scanning a multilayer material using magnetism. The apparatus for scanning a multilayer material includes at least one measurement head for exciting a mixed magnetic field on a multilayer specimen using at least one excitation solenoid coil and detecting detection signals from the multilayer specimen using a detection solenoid coil, a movement controller for moving any one of the at least one measurement head and a stage on which the multilayer specimen is placed in order to detect detection signals for all parts of the multilayer specimen, and a signal controller for generating two excitation signals having different frequencies in order to generate the mixed magnetic field and for generating a scanning result for the multilayer specimen by collecting the detection signals.
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4.发明申请公开(公告)号：US20180100901A1
公开(公告)日：2018-04-12
申请号：US15657367
申请日：2017-07-24
Inventor： Seung-Min CHOI , Jae-Chan JEONG , Hyo-Bong HONG , Sung-Woong SHIN , Jae-Il CHO
CPC classification number: G01R33/0023 , G01R33/0029 , G01R33/12 , G01R33/32 , G01R33/34053 , G06F11/1443
Abstract: Disclosed herein are a signal transmission/reception method for signal analysis in FMMD technology and an apparatus using the method. A signal transmission apparatus includes a signal generation unit for generating two sine wave signals having different frequencies in consideration of a voltage of an excitation coil included in a magnetic particle measurement sensor, a signal addition unit for generating an input signal for producing a magnetic field by electronically adding the two sine wave signals, a differential signal generation unit for generating a differential signal for the input signal to minimize transmission noise, and a signal transmission unit for amplifying voltages of the input signal and the differential signal and transmitting the amplified input signal and differential signal to the excitation coil so as to produce a magnetic field in the excitation coil and apply the magnetic field to a measurement target sample.
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公开(公告)号：US20210059557A1
公开(公告)日：2021-03-04
申请号：US16939983
申请日：2020-07-27
Inventor： Jae-Chan JONG , Seung-Min CHOI , Hyo-Bong HONG
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.
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Patent Agency Ranking
公开(公告)号：US20200217910A1
公开(公告)日：2020-07-09
申请号：US16734217
申请日：2020-01-03
Inventor： Seung-Min CHOI , Jae-Chan JEONG , Hyo-Bong HONG
Abstract: Disclosed herein are a continuous scanning method using signal shielding and an apparatus for the continuous scanning method. The continuous scanning method includes producing a magnetic field on consecutively input samples by applying a signal to an excitation solenoid coil, blocking signal detection in a partial region so that only one harmonic peak is detected by a detection solenoid coil, which is a differential coil, using a magnetic field produced by at least one magnet, and sequentially detecting one harmonic peak in the samples based on the detection solenoid coil, and performing scanning of nanomagnetic particles on respective samples based on a signal for the detected harmonic peak.
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7.发明申请公开(公告)号：US20200080879A1
公开(公告)日：2020-03-12
申请号：US16554326
申请日：2019-08-28
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.
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8.发明申请公开(公告)号：US20200050902A1
公开(公告)日：2020-02-13
申请号：US16535729
申请日：2019-08-08
Inventor： Seung-Min CHOI , Hyo-Bong HONG , Jae-Chan JONG
Abstract: Disclosed herein are a method for analyzing material using a neural network based on multimodal input and an apparatus for the same. The method includes obtaining multimodal sensor data pertaining to at least one type of material to be analyzed using a multimodal sensor and augmenting the multimodal sensor data; merging the multimodal sensor data; training a neural network, provided for classifying the at least one type of material to be analyzed, using the merged multimodal sensor data; and classifying the type of target material by inputting multimodal sensor data pertaining to the target material, which is obtained using the multimodal sensor data, to the neural network.
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公开(公告)号：US20180203950A1
公开(公告)日：2018-07-19
申请号：US15868863
申请日：2018-01-11
Inventor： Seung-Min CHOI , Jae-Chan JEONG , Hyo-Bong HONG
CPC classification number: G06F17/50 , G01R33/0206 , G01R33/028 , G01R33/10 , G06F17/5009 , G06F2217/02 , G06F2217/06 , H01F41/04
Abstract: Disclosed herein are a method for providing a parameter for coil design and an apparatus for the same. The method includes receiving a magnetic field parameter value for an arbitrary coil from a user; determining whether there is a constraint on each of an electrical parameter group and a geometric parameter group; when it is determined that there is a constraint on any one of the two groups, setting a parameter range for a second parameter group on which there is no constraint based on a fixed parameter set of a first parameter group on which there is a constraint; and selecting a final parameter set of the second parameter group for satisfying the magnetic field parameter value within the parameter range and outputting parameter values of the fixed parameter set and the final parameter set to the user.
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10.发明申请公开(公告)号：US20180149655A1
公开(公告)日：2018-05-31
申请号：US15807454
申请日：2017-11-08
Inventor： Hyo-Bong HONG , Seung-Min CHOI , Jae-Chan JEONG
IPC: G01N33/574 , G01N1/40 , G01N33/68 , G01N33/543
CPC classification number: G01N33/57484 , B01J2219/00299 , B01L3/505 , G01N1/405 , G01N1/4077 , G01N33/543 , G01N33/54326 , G01N33/54346 , G01N33/6893 , G01N2800/26
Abstract: This invention relates to a kit for detecting a target material and a method of detecting a target material using the same.
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