公开(公告)号：US11796620B2

公开(公告)日：2023-10-24

申请号：US17491553

申请日：2021-10-01

申请人： Siemens Healthcare GmbH ,  The Regents of the University of California

发明人： Xiaodong Zhong ,  Holden H. Wu ,  Vibhas S. Deshpande ,  Tess Armstrong ,  Li Pan ,  Marcel Dominik Nickel ,  Stephan Kannengiesser

IPC分类号： G01V3/00 ,  G01R33/565 ,  G01R33/48 ,  G01R33/483 ,  G01R33/567

CPC分类号： G01R33/56509 ,  G01R33/4822 ,  G01R33/4835 ,  G01R33/5676 ,  G01R33/56554

摘要： A method for acquiring magnetic resonance imaging data with respiratory motion compensation using one or more motion signals includes acquiring a plurality of gradient-delay-corrected radial readout views of a subject using a free-breathing multi-echo pulse sequence, and sampling a plurality of data points of the gradient-delay-corrected radial readout views to yield a self-gating signal. The self-gating signal is used to determine a plurality of respiratory motion states corresponding to the plurality of gradient-delay-corrected radial readout views. The respiratory motion states are used to correct respiratory motion bias in the gradient-delay-corrected radial readout views, thereby yielding gradient-delay-corrected and motion-compensated multi-echo data. One or more images are reconstructed using the gradient-delay-corrected and motion-compensated multi-echo data.

公开(公告)号：US11796617B2

公开(公告)日：2023-10-24

申请号：US17420246

申请日：2019-04-09

申请人： University of Cincinnati ,  Children's Hospital Medical Center

发明人： Jinghua Wang ,  Lili He

IPC分类号： G01V3/00 ,  G01R33/561 ,  A61B5/055 ,  G01R33/48 ,  G01R33/565

CPC分类号： G01R33/5611 ,  A61B5/055 ,  G01R33/4818 ,  G01R33/56509

摘要： A method for k-space registration is provided. The method of k-space registration includes receiving a first partial k-space dataset for an object and a second partial k-space dataset for the object, selecting the first partial k-space dataset as a reference, selecting feature for estimating a transformation matrix for transforming k-space data, estimating a transformation matrix based on the feature of entire or part of the first partial k-space dataset and the feature of the second partial k-space dataset corresponding to the entire or part of the first partial k-space dataset, correcting the second partial k-space dataset based on the transformation matrix, and obtaining the corrected second partial k-space dataset. The present method is further used for partial Fourier reconstruction.

公开(公告)号：US11782179B1

公开(公告)日：2023-10-10

申请号：US17499810

申请日：2021-10-12

申请人： SeeScan, Inc.

发明人： Mark S. Olsson ,  Ray Merewether ,  Sequoyah Aldridge ,  Ryan B. Levin

IPC分类号： G01V3/165 ,  G01V3/10 ,  G01V3/15 ,  G01V3/00 ,  G01V3/08

CPC分类号： G01V3/165 ,  G01V3/00 ,  G01V3/081 ,  G01V3/104 ,  G01V3/15

摘要： Utility locators with various antenna configurations for detecting buried objects or otherwise inaccessible pipes and other conduits, cables, conductors and inserted transmitters are disclosed. In one embodiment, a locator includes a body with a mast and head unit, one or more dodecahedral antenna nodes coupled to or on or within the body, and a camera disposed on or within the body. The camera may be a still camera, a video camera, or both. The locator may also include one or more GPS sensors coupled to one or more GPS antennas.

公开(公告)号：US11754741B2

公开(公告)日：2023-09-12

申请号：US17555240

申请日：2021-12-17

申请人： Halliburton Energy Services, Inc.

发明人： Baris Guner ,  Luis Emilio San Martin

IPC分类号： G01V3/38 ,  G01V3/20 ,  G01V1/16 ,  E21B47/00 ,  E21B49/00 ,  G01V3/00 ,  G01R27/00 ,  G01V3/24 ,  G01R25/00 ,  E21B47/002

CPC分类号： G01V3/38 ,  E21B47/0025 ,  G01V3/20 ,  E21B47/00 ,  E21B49/00 ,  G01R25/00 ,  G01R27/00 ,  G01V1/16 ,  G01V3/00 ,  G01V3/24

摘要： A method and system for resistivity imaging. A method may comprise disposing a downhole tool into a borehole, applying a voltage difference between the array of injector electrodes, constructing a first set of formation images for each of the plurality of frequencies, applying a mud effect removal algorithm to produce a second set of formation images for each of the plurality of frequencies, applying a dielectric correction algorithm to each of the plurality of frequencies to produce a third set of formation images for each of the plurality of frequencies, and combining the first set of formation images, the second set of formation images, and the third set of formation images to obtain a blended image. A system for resistivity imaging may comprise a downhole tool. The downhole tool may comprises a pad, an array of injector electrodes, and one or more return electrodes.

公开(公告)号：US11747503B2

公开(公告)日：2023-09-05

申请号：US16640402

申请日：2018-08-29

申请人： KEY SAFETY SYSTEMS, INC. ,  Lorenzo Menaldo ,  Luigino Gugole ,  Valerio Poli

发明人： Lorenzo Menaldo ,  Luigino Gugole ,  Valerio Poli

IPC分类号： G01V3/00 ,  B60R16/027 ,  B62D1/06

CPC分类号： G01V3/00 ,  B60R16/027 ,  B62D1/06

摘要： A system (1) and a method provide for detecting the presence or the absence of a hand on a steering wheel (9) that is provided with one or more conductive wires (2, 2a, 2b, 3), and the system (1) includes a detection device (5) with an input circuit (6) providing an input signal (11) to at least one conductive wire (2, 2a). The input signal (11) is an RF frequency electrical signal and an output circuit (7) is configured for sensing the impedance of the at least one conductive wire (2) or for sensing the inductive coupling between the at least one conductive wire (2a) and at least one second conductive wire (2b) in response to the input signal. The detection device (5) is configured for detecting a change in impedance of the at least one conductive wire (2, 2b) or for detecting a change the inductive coupling between the at least one conductive wire (2a) and the at least one second conductive wire (2b), to indicate the presence or the absence of a hand on said steering wheel (9).

公开(公告)号：US11740305B2

公开(公告)日：2023-08-29

申请号：US17576026

申请日：2022-01-14

申请人： Siemens Healthcare GmbH

发明人： Alto Stemmer

IPC分类号： G01V3/00 ,  G01R33/483 ,  G01R33/561 ,  G01R33/565 ,  G01R33/56

CPC分类号： G01R33/4835 ,  G01R33/561 ,  G01R33/5602 ,  G01R33/5659

摘要： The present disclosure is directed to controlling a magnetic resonance imaging system for generating magnetic resonance image data from an object under examination, in which magnetic resonance raw data is captured, and at least one multi-slice STEAM pulse sequence is generated. The multi-slice STEAM pulse sequence comprises one excitation module for each slice, in each of which are generated a first slice-selective RF excitation pulse and a second slice-selective RF pulse, and one readout module for each slice for acquiring magnetic resonance raw data, which readout module comprises a third slice-selective RF pulse and further sequence elements for spatial encoding and for receiving RF signals. Between the excitation module and the readout module of a first slice is implemented at least one excitation module or one readout module for another slice.

公开(公告)号：US11693076B2

公开(公告)日：2023-07-04

申请号：US17450174

申请日：2021-10-07

申请人： CANON MEDICAL SYSTEMS CORPORATION

发明人： Mitsuhiro Bekku

IPC分类号： G01V3/00 ,  G01R33/561 ,  G01R33/54 ,  G01R33/565

CPC分类号： G01R33/5611 ,  G01R33/543 ,  G01R33/56545

摘要： An information processing apparatus according to an embodiment of the present disclosure includes a processing circuitry. The processing circuitry obtains a first g factor generated by using first magnetic resonance data acquired through a first parallel imaging process performed by using a plurality of reception coils and a second g factor generated by using second magnetic resonance data related to a second parallel imaging process performed by using the plurality of reception coils. The second parallel imaging process is different from the first parallel imaging process. The processing circuitry adjusts the first g factor so as to reduce a difference between the first g factor and the second g factor.

公开(公告)号：US11644518B2

公开(公告)日：2023-05-09

申请号：US16475469

申请日：2018-01-12

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Cornelis Leonardus Gerardus Ham ,  Filips Van Liere

IPC分类号： G01V3/00 ,  G01R33/38 ,  G01R33/3815 ,  G01R33/3875 ,  G01R33/565

CPC分类号： G01R33/3804 ,  G01R33/3815 ,  G01R33/3875 ,  G01R33/56563

摘要： The present invention provides a method for compensation of periodic B0 modulations from a periodic motion of a cold head (212) of a main magnet (114) of a magnetic resonance (MR) imaging system (110), whereby main windings (200) of the main magnet (114) are cooled to superconductivity by the cold head (212), which exerts a repetitive motion, the method comprising the steps of measuring a periodic occurrence of spatial field components of the B-field based on a motion of the cold head (212) as a function of time, performing a sensor measurement of a periodic, auxiliary parameter of the MR imaging system (110), which is not the periodic occurrence of spatial field components, synchronizing the periodic occurrence of spatial field components of the B-field with the measured periodic, auxiliary parameter of the MR imaging system (110), and triggering based on the measured periodic sensor measurement of the MR imaging system (110) a periodic application of compensation signals to compensate the periodic occurrence of spatial field components of the B-field based on a motion of the cold head (212). Furthermore, the present invention provides a MR imaging system (110) for providing an image representation of a region of interest (142) of a subject of interest (120) positioned in an examination space (116) of the MR imaging system (110), wherein the MR imaging system (110) is adapted to perform the above method.

公开(公告)号：US11624793B2

公开(公告)日：2023-04-11

申请号：US17383526

申请日：2021-07-23

申请人： Siemens Healthcare GmbH

发明人： Adam Kettinger ,  Mario Zeller

IPC分类号： G01V3/00 ,  G01R33/48 ,  G01R33/561 ,  G01R33/56 ,  G01R33/54 ,  G01R33/385

摘要： In a method for acquiring measurement data using a magnetic resonance (MR) system having a gradient unit, frequency-dependent parameters characterizing the gradient unit of the MR system are accessed (e.g. loaded from a memory), a k-space trajectory of a RESOLVE (Readout Segmentation Of Long Variable Echo trains) sequence planned for a MR measurement is accessed, MR measurement data is acquired based on the planned k-space trajectory and reconstructing image data from the MR measurement data, and an electronic signal is provided that represents the reconstructed image data as an output of the MR system. The k-space trajectory may have a frequency component in at least one direction. The planned k-space trajectory may be corrected based on at least one frequency component of the planned k-space trajectory and the frequency-dependent parameters.

公开(公告)号：US11619690B2

公开(公告)日：2023-04-04

申请号：US17241765

申请日：2021-04-27

申请人： TracInnovations ApS

发明人： Oline Vinter Olesen ,  Ole Nerst

IPC分类号： G01V3/00 ,  G01R33/28 ,  G01R33/36 ,  G01R33/567 ,  G02B6/44 ,  H02G11/02

摘要： The present disclosure relates to an un-motorized coiling mechanism for cable handling in medical scanning. A medical scanner accessory system for a medical scanner is disclosed. The medical scanner accessory system comprises a base part; a drum part rotatably connected to the base part, the drum part having a rotation axis and configured for accommodating an electronic device; a coiling mechanism comprising a first coiling part and a second coiling part; an elastic cord with a first point attached to the base part and a second point attached to the drum part, wherein the elastic cord is coiled on the coiling mechanism; and a cable comprising a jacket, wherein the cable has a first connector at a first end and a second connector at a second end thereof, wherein the first connector is connectable to a movable part of the medical scanner and the second connector is connectable to the electronic device, wherein the cable is coiled on a first part of the drum part, wherein the elastic cord is configured to apply a force to the drum part for rotating the drum part in a coiling direction of rotation about the rotation axis thereby coiling the cable on the first part of the drum part.