公开(公告)号：US20200049777A1

公开(公告)日：2020-02-13

申请号：US16654058

申请日：2019-10-16

申请人： KONINKLIJKE PHILIPS N.V.

发明人： MIHA FUDERER ,  JOHANNES MATIA VAN EGGERMOND

IPC分类号： G01R33/28 ,  G01R33/36 ,  G01R33/341

摘要： The present invention provides a radio frequency (RF) receive coil device for use in a magnetic resonance (MR) imaging system, comprising a RF receive coil, a plug for connecting the RF receive coil to the MR imaging system, sensing means for sensing the presence of a magnetic field of the MR imaging system, detecting means for detecting if the plug is connected to the MR imaging system, and a warning means for generating a warning when the sensing means sense the presence of a magnetic field of the MR imaging system and the detecting means detect that the plug is not connected to the MR imaging system.

公开(公告)号：US10509087B2

公开(公告)日：2019-12-17

申请号：US15587529

申请日：2017-05-05

申请人： Siemens Healthcare GmbH

发明人： Klaus Ludwig

IPC分类号： G01R33/54 ,  G01R33/36 ,  G01R33/341

摘要： In a method for generating a measurement protocol for medical imaging of an object under examination, measurement parameters of the measurement protocol are divided into a protocol structure with a base class and classes supplementing the base class. The base class includes only hardware-independent measurement parameters and the supplementary classes includes only hardware-specific measurement parameters. A method for transferring a measurement protocol, a measurement protocol generation computer, a measurement protocol conversion apparatus, and a medical imaging system make use of such a measurement protocol.

公开(公告)号：US10481224B2

公开(公告)日：2019-11-19

申请号：US15318090

申请日：2015-06-10

申请人： Samsung Electronics Co., Ltd.

发明人： Kyoungnam Kim

IPC分类号： A61B5/055 ,  G01R33/341

摘要： A radio frequency (RF) surface coil unit and a magnetic resonance imaging (MRI) system including the same are provided. The RF surface coil unit is a bulk-type RF surface coil, and includes a plurality of RF coil elements formed on a cylindrical-shaped base, wherein at least one pair of the plurality of RF coil elements include facing RF coil elements that are electrically connected to each other and are formed as one channel.

公开(公告)号：US10473737B2

公开(公告)日：2019-11-12

申请号：US15681139

申请日：2017-08-18

申请人： SYNAPTIVE MEDICAL (BARBADOS) INC.

发明人： Ian Robert Oliphant Connell

IPC分类号： G01R33/483 ,  G01R33/36 ,  G01R33/54 ,  G01R33/341 ,  G01R33/48 ,  G01R33/44 ,  G01R33/34

摘要： A magnetic resonance (MR) imaging system includes a transmit radio frequency (RF) coil assembly comprising multiple capacitor banks each coupled to at least one diode that is characterized by a high breakdown voltage such that when the transmit RF coil assembly applies at least one slice-selecting RF pulse to a portion of a subject placed in the magnet to select a particular slice for MR imaging, the capacitor banks are selectively adjusted to improve an RF transmission characteristics of the RF coil assembly in transmitting the at least one slice-selecting RF pulse. The MR imaging system may further include a receive radio frequency (RF) coil assembly configured to, in response to at least the slice-selecting RF pulse, receive at least one response radio frequency (RF) pulse emitted from the selected slice of the portion of the subject; a housing; a main magnet; gradient coils; and a control unit.

公开(公告)号：US10436867B2

公开(公告)日：2019-10-08

申请号：US15613563

申请日：2017-06-05

申请人： Siemens Healthcare GmbH

发明人： Berthold Kiefer ,  Marcel Dominik Nickel ,  Stephan Kannengiesser

IPC分类号： G01R33/50 ,  G01R33/341 ,  G01R33/483 ,  G01R33/56 ,  A61B5/055 ,  A61B5/00

摘要： In a computer and a magnetic resonance method and apparatus for automatic characterization (classification) of liver tissue in a region of interest of a liver, at least one value tuple of the region of interest of the liver is acquired, the value tuple including at least one T1 value determined from magnetic resonance images of the region of interest, or a reciprocal value thereof, and a T2 or T2* value or a reciprocal value thereof. The value tuple is transferred into a multidimensional parameter space and the characterization of the liver tissue is then performed on the basis of the position of the value tuple in the parameter space.

公开(公告)号：US10436860B2

公开(公告)日：2019-10-08

申请号：US15506026

申请日：2014-11-12

申请人： Halliburton Energy Services, Inc.

发明人： Lilong Li ,  Rebecca Jachmann ,  Arcady Reiderman

IPC分类号： G01R33/38 ,  G01R33/341 ,  G01R33/383 ,  G01R33/44 ,  G01V3/32 ,  G01N24/08

摘要： A side-looking Nuclear Magnetic Resonance (“NMR”) logging tool is designed to reduce and/or eliminate a borehole signal. The logging tool includes a magnetic assembly and a radio frequency (“RF”) transceiver antenna. The axial extent of the RF transceiver antenna has a length selected to reduce a borehole signal.

公开(公告)号：US20190265317A1

公开(公告)日：2019-08-29

申请号：US16334961

申请日：2017-09-28

申请人： KONINKLIJKE PHILIPS N.V.

发明人： TIMOTHY ORTIZ ,  AASRITH GANTI

IPC分类号： G01R33/36 ,  H02J50/10 ,  H02J7/02 ,  G01R33/341

摘要： A magnetic resonance system includes a wireless power detection sensor and a wireless energy harvesting circuit. The wireless power detection sensor detects magnetic resonance transmissions of the magnetic resonance system. The wireless energy harvesting circuit harvests energy from the magnetic resonance transmissions based on the wireless power detection sensor detecting the magnetic resonance transmissions.

公开(公告)号：US10345403B2

公开(公告)日：2019-07-09

申请号：US15319494

申请日：2014-08-19

申请人： Samsung Electronics Co., Ltd.

发明人： Kyoungnam Kim

IPC分类号： G01R33/341 ,  G01R33/34 ,  G01R33/3415 ,  G01R33/36

摘要： A radio frequency (RF) surface coil and a magnetic resonance device employing the same are disclosed. The disclosed RF surface coil for the magnetic resonance device comprises: a plurality of conductor elements connected in series so as to form a loop-shaped surface coil; and a variable inductance unit provided in at least one of the plurality of conductor elements so as to adjust inductance, wherein the variable inductance unit comprises a conductor bar and a coupler for attachably/detachably coupling the conductor bar to/from at least one of the plurality of conductor elements.

公开(公告)号：US10281533B2

公开(公告)日：2019-05-07

申请号：US13743226

申请日：2013-01-16

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01V3/00 ,  G01R33/28 ,  G01R33/36 ,  G01R33/341 ,  G01R33/3415

摘要： Magnetic resonance tomography (MRT) local coil positioning by RFID is enabled with a positioning device to detect a position of a first object relative to a position of an additional object that includes at least one RFID tag arranged on the first object and/or at least one RFID reader arranged on the additional object.

公开(公告)号：US10261145B2

公开(公告)日：2019-04-16

申请号：US14648485

申请日：2013-12-02

申请人： Lawrence Wald ,  Jason Stockmann

发明人： Lawrence Wald ,  Jason Stockmann

IPC分类号： G01V3/00 ,  G01R33/3415 ,  G01R33/341 ,  G01R33/3875 ,  A61B5/055

摘要： A system and method for magnetic resonance imaging (MRI) and static field (B0) shimming. A coil system includes a conductive loop configured to be arranged proximate to a region of interest (ROI). The coil system also includes an alternating current (AC) circuit electrically connecting the conductive loop to an AC electrical connection configured to be coupled to an MRI system to communicate medical imaging signals received by the conductive loop from the ROI during a medical imaging procedure to the MRI system. The coil system further includes a direct current (DC) circuit electrically connecting the conductive loop to a DC electrical connection configured to be coupled to a DC power source and a plurality of circuit components configured to block DC signals from reaching the AC electrical connection in order to produce a spatially varying static magnetic field for shimming inhomogenieties of the static field.