公开(公告)号：US20240353509A1

公开(公告)日：2024-10-24

申请号：US18684720

申请日：2022-05-11

申请人： SOPH LTD

发明人： Hong DING

IPC分类号： G01R33/12 ,  G01L1/02 ,  G01L5/00

CPC分类号： G01R33/12 ,  G01L1/02 ,  G01L5/0004

摘要： A magnetic force measuring device includes a measuring body and a pressure gage. A center of the measuring body is provided with a longitudinal channel. A lifting system, an intermediate system, and a jacking block are arranged in the longitudinal channel. The pressure gage is associated with the intermediate system. Bottom surfaces of the measuring body and the jacking block are flush to form a same contact surface in contact with a magnetic module. One of the measuring body and the jacking block is magnetically conductive, and the other is not magnetically conductive. When subjected to an external action force, the lifting system can drive the intermediate system to move up or down in the longitudinal channel, to lift the jacking block upward or push the jacking block to jack up the measuring body. The pressure gage records a maximum stress value of the jacking block.

公开(公告)号：US12117508B1

公开(公告)日：2024-10-15

申请号：US18744685

申请日：2024-06-16

申请人： INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES

发明人： Jie Tian ,  Zechen Wei ,  Hui Hui ,  Liwen Zhang ,  Xin Yang ,  Tao Zhu

IPC分类号： G01R33/12 ,  A61B5/0515 ,  G06T11/00

CPC分类号： G01R33/1276 ,  A61B5/0515 ,  G06T11/006 ,  G06T2211/441

摘要： A system for reconstructing a magnetic particle image based on adaptive optimization of regularization terms includes: a MPI device for scanning an imaging object to acquire a voltage response signal; a signal processor for constructing a system matrix; and a control processor for reconstructing the magnetic particle image based on an arbitrarily selected regularization term, inputting the reconstructed magnetic particle image to a regularization-term adaptive optimization neural network model for enhancement processing, taking the enhanced magnetic particle image as a first image, and calculating a loss value between the first image and an initial image to acquire a final reconstructed magnetic particle image. The system adopts a neural network model-based automatic learning approach, instead of the approach of manually selecting regularization terms and adjusting parameters, to improve the reconstruction efficiency and quality of the magnetic particle image.

公开(公告)号：US12097032B2

公开(公告)日：2024-09-24

申请号：US17972889

申请日：2022-10-25

申请人： Genetesis, Inc.

发明人： Raj Muchhala ,  Emmanuel T. Setegn ,  Benjamin Donaldson Moore

IPC分类号： A61B5/243 ,  A61B5/00 ,  A61B5/026 ,  A61B5/24 ,  A61B5/245 ,  G01R33/035 ,  G01R33/12 ,  G06N3/044 ,  G06N3/045 ,  G06N3/047 ,  G06N3/084 ,  G06N3/088 ,  G06N20/00 ,  G16H40/63 ,  G16H50/20 ,  G16H50/30 ,  G06N5/01 ,  G06N20/10 ,  G06N20/20

CPC分类号： A61B5/243 ,  A61B5/24 ,  A61B5/245 ,  G01R33/0354 ,  G01R33/1238 ,  G06N3/044 ,  G06N3/045 ,  G06N3/047 ,  G06N3/084 ,  G06N3/088 ,  G06N20/00 ,  A61B5/026 ,  A61B5/4094 ,  A61B2562/18 ,  G06N5/01 ,  G06N20/10 ,  G06N20/20 ,  G16H40/63 ,  G16H50/20 ,  G16H50/30

摘要： Abnormalities in electromagnetic fields in the heart, brain, and stomach, among other organs and tissues of the human body, can be indicative of serious health conditions. Described herein are methods, software, systems and devices for detecting the presence of an abnormality in an organ or tissue of a subject by analysis of the electromagnetic fields generated by the organ or tissue.

公开(公告)号：US12092708B2

公开(公告)日：2024-09-17

申请号：US18103828

申请日：2023-01-31

申请人： ENDOMAGNETICS LTD.

发明人： Simon Richard Hattersley

IPC分类号： A61B5/05 ,  A61B5/00 ,  A61B5/06 ,  A61K49/18 ,  B82Y5/00 ,  G01R33/12 ,  A61B17/00

CPC分类号： G01R33/1269 ,  A61B5/05 ,  A61B5/065 ,  A61B5/415 ,  A61B5/418 ,  A61B5/4312 ,  A61K49/1863 ,  B82Y5/00 ,  A61B2017/00876 ,  A61B2562/12

摘要： A system and method for locating magnetic material. In one embodiment the system includes a magnetic probe; a power module in electrical communication with the magnetic probe to supply current to the magnetic probe; a sense module in electrical communication with the magnetic probe to receive signals from the magnetic probe; and a computer in electrical communication with the power module and the sense module. The computer generates a waveform that controls the supply of current from the power module and receives a signal from the sense module that indicates the presence of magnetic material. The magnetic probe is constructed from a material having a coefficient of thermal expansion of substantially 10−6/° C. or less and a Young's modulus of substantially 50 GPa or greater. In one embodiment magnetic nanoparticles are injected into a breast and the lymph nodes collecting the particles are detected with the probe and deemed sentinel nodes.

公开(公告)号：US12050254B2

公开(公告)日：2024-07-30

申请号：US17047111

申请日：2019-04-17

申请人： Commonwealth Fusion Systems LLC

发明人： Thomas Braun ,  Ruslan Karabalaev ,  Michael Baecker ,  Roger Woerdenweber

IPC分类号： G01R33/12 ,  G01R33/00

CPC分类号： G01R33/1238 ,  G01R33/007

摘要： Described herein is an apparatus for quality control of a superconducting tape including



(a) at least two rolls contacting the superconducting tape and being suitable for injecting an electric current into the superconducting tape;
(b) at least two measuring contacts contacting the superconducting tape and being suitable for measuring an electric voltage along the superconducting tape; and
(c) a cooling section suitable for cooling the superconducting tape below its critical temperature,

where the at least two rolls and the at least two measuring contacts are located inside the cooling section, and

where the cooling section is suitable for keeping the rolls at a first temperature and the measuring contacts at a second temperature, where the first temperature is lower than the second temperature.

公开(公告)号：US20240201287A1

公开(公告)日：2024-06-20

申请号：US18287023

申请日：2021-04-22

申请人： Mitsubishi Electric Corporation

发明人： Kazuki YAMAUCHI

IPC分类号： G01R33/12 ,  G01N33/543

CPC分类号： G01R33/1276 ,  G01N33/54333 ,  G01N33/54373

摘要： A detection method for detecting a detection target magnetic particle using an AC excitation magnetic field, the detection method includes: acquiring a Neel relaxation curve indicating a relationship between a Neel relaxation time and a particle diameter for candidate magnetic particles; acquiring a Brownian relaxation curve indicating a relationship between a Brownian relaxation time and the particle diameter for the candidate magnetic particles; specifying a particle diameter corresponding to an intersection of the Neel relaxation curve and the Brownian relaxation curve as an intersection particle diameter; and selecting a candidate magnetic particle having a particle diameter larger than the intersection particle diameter as the detection target magnetic particle.

公开(公告)号：US11927652B1

公开(公告)日：2024-03-12

申请号：US18384882

申请日：2023-10-29

申请人： Beijing University of Aeronautics and Astronautics

发明人： Jie Tian ,  Haoran Zhang ,  Bo Zhang ,  Yu An

IPC分类号： G01R33/12 ,  G01R33/00

CPC分类号： G01R33/1276 ,  G01R33/0041 ,  G01R33/0047

摘要： A structure, a method, and an electronic device for multi-coil handheld magnetic particle imaging (MPI) are provided. The structure for multi-coil handheld MPI includes a processing device, a control device, an imager, a gradient and scanning module, an excitation and correction module, and a detection module, where the gradient and scanning module includes a first circular coil pair and a second circular coil pair; the excitation and correction module includes a circular excitation and correction coil; and the detection module includes a circular detection coil. The structure for multi-coil handheld MPI focuses the imaging region in a specific part, improving the MPI accuracy, and features small volume, simple structure, and low power consumption.

公开(公告)号：US20240079030A1

公开(公告)日：2024-03-07

申请号：US18503873

申请日：2023-11-07

申请人： Dieter Suess

发明人： Dieter Suess

IPC分类号： G11B5/66 ,  B82Y25/00 ,  G01R33/09 ,  G01R33/12

CPC分类号： G11B5/674 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/1207

摘要： A multilayer exchange spring recording media consists of a magnetically hard magnetic storage layer strongly exchange coupled to a softer nucleation host. The strong exchange coupling can be through a coupling layer or direct. The hard magnetic storage layer has a strong perpendicular anisotropy. The nucleation host consists of one or more ferromagnetic coupled layers. For a multilayer nucleation host the anisotropy increases from layer to layer. The anisotropy in the softest layer of the nucleation host can be two times smaller than that of the hard magnetic storage layer. The lateral exchange between the grains is small. The nucleation host decreases the coercive field significantly while keeping the energy barrier of the hard layer almost unchanged. The coercive field of the total structure depends on one over number of layers in the nucleation host. The invention proposes a recording media that overcomes the writeability problem of perpendicular recording media.

公开(公告)号：US11906605B1

公开(公告)日：2024-02-20

申请号：US17516618

申请日：2021-11-01

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： Nicholas J. Jones ,  Emily L. Guzas ,  Matthew T. Roberts ,  Wayne C. Tucker

IPC分类号： G01R33/12 ,  G01R33/032 ,  G08B21/18 ,  G01R33/07

CPC分类号： G01R33/1223 ,  G01R33/0325 ,  G01R33/07 ,  G01R33/1215 ,  G08B21/182

摘要： The magneto-optical Kerr effect (MOKE) is used to capture variations in magnetic permeability and magnetization to determine the presence of sensitization. MOKE-magnetometry-based systems and apparatus may be used to provide in-field magnetic measurements, and may be particularly useful in methods for assessing changes in composition, crystal structure, and grain size in magnetic materials.

公开(公告)号：US20230417847A1

公开(公告)日：2023-12-28

申请号：US18144256

申请日：2023-05-08

申请人： INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES

发明人： Yang DU ,  Jie TIAN ,  Zhengyao PENG ,  Lin YIN ,  Qian LIANG

IPC分类号： G01R33/12 ,  G06N3/091 ,  G06T11/00

CPC分类号： G01R33/1276 ,  G06N3/091 ,  G06T11/003

摘要： An MPI reconstruction method, device, and system based on a RecNet model include obtaining a one-dimensional (1D) MPI signal on which imaging reconstruction is to be performed, taking the 1D MPI signal as an input signal, and inputting the input signal and a velocity signal of an FFP corresponding to the input signal into a trained magnetic particle reconstruction model RecNet for image reconstruction to obtain a two-dimensional (2D) MPI image, where the magnetic particle reconstruction model RecNet is constructed based on a domain conversion network and an improved UNet network. The MPI reconstruction method, device, and system obtain a high-quality and clear magnetic particle distribution image without obtaining the system matrix.