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1.发明授权公开(公告)号：US12111370B2
公开(公告)日：2024-10-08
申请号：US17994620
申请日：2022-11-28
CPC分类号： G01R33/34015
摘要： A radio frequency (RF) receiving coil assembly for a magnetic resonance imaging (MRI) system includes a plurality of loops. The RF receiving coil assembly also includes a plurality of electronics units, wherein a respective electronics unit of the plurality of electronics units is coupled to a respective loop of the plurality of loops, wherein each respective electronics unit includes circuitry configured to measure a temperature of the respective loop and to regulate power provided to the respective loop based on the temperature of the respective loop.
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公开(公告)号：US12097019B2
公开(公告)日：2024-09-24
申请号：US17947457
申请日：2022-09-19
发明人： Daniel Driemel , Stephan Zink , Martin Hemmerlein
摘要： A magnetic resonance (MR) local coil and a magnetic resonance apparatus are disclosed. The MR local coil includes an antenna unit having at least one antenna for receiving and/or transmitting high frequency (HF) signals; a connection cable for connecting the MR local coil to a magnetic resonance apparatus; and a two-dimensional, (e.g., ribbon-shaped), transmission element for transmitting energy, (e.g., electrical energy), and/or signals, (e.g., electrical and/or optical signals), between the connection cable and the antenna unit. In this case, the transmission element is at least in part arranged about an axis of rotation in a spiral manner.
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公开(公告)号：US12078706B2
公开(公告)日：2024-09-03
申请号：US17946387
申请日：2022-09-16
发明人： Julian Richter , Manuel Stich
IPC分类号： G01V3/00 , G01R33/48 , G01R33/561 , G01R33/565
CPC分类号： G01R33/5611 , G01R33/4818 , G01R33/56509
摘要： Techniques for determining a functional magnetic resonance data set of an imaging region of a brain of a patient are disclosed in which blood oxygenation level dependent functional magnetic resonance imaging is used. The techniques include using a plurality of reception coils, and acquiring magnetic resonance signals using parallel imaging and a magnetic resonance sequence defining a k-space trajectory, wherein undersampling in at least two k-space directions is performed. The techniques further include reconstructing the functional magnetic resonance data set from the magnetic resonance signals and sensitivity information regarding the plurality of reception coils using a reconstruction technique for undersampled magnetic resonance data, wherein the k-space trajectory is chosen to allow controlled aliasing in all three spatial dimensions including the readout direction.
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公开(公告)号：US12078696B2
公开(公告)日：2024-09-03
申请号：US17938465
申请日：2022-10-06
发明人： Xiaoli Zhao , Kang Wang , Hua Li , Zhenghui Zhang , Florian Wiesinger , Ty A. Cashen , Rolf Schulte
IPC分类号： G01V3/00 , A61B5/055 , G01R33/20 , G01R33/561
CPC分类号： G01R33/20 , A61B5/055 , G01R33/5611
摘要： A method for generating an image of an object with a magnetic resonance imaging (MM) system is presented. The method includes first performing a calibration scan of the object. The calibration scan is performed with a zero echo time (ZTE) radial sampling scheme to obtain calibration k-spaces for surface coil elements and a body coil of the MRI system. The calibration scan is performed in such a manner that the endpoints of calibration k-space lines in each calibration k-space follow a spiral path. A plurality of calibration parameters are then obtained from the plurality of calibration k-spaces. A second scan of the object is then performed to acquire the MR image data. The image of the object is then generated based on the plurality of calibration parameters and the MR image data.
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公开(公告)号：US12061085B2
公开(公告)日：2024-08-13
申请号：US17756891
申请日：2020-10-21
申请人： Robert Bosch GmbH
发明人： Tino Fuchs , Janine Riedrich-Moeller , Andreas Brenneis , Robert Roelver , Michael Curcic , Peter Degenfeld-Schonburg
CPC分类号： G01C19/62
摘要： A method for determining a rotational orientation change using an NMR gyroscope includes making use of a measure of determining, in a vapor cell, which is filled at least with a gaseous first element and a gaseous second element having non-vanishing nuclear spin, a nuclear spin component of the second element in the second direction and a nuclear spin component of the second element in a third direction. The second direction and the third direction are perpendicular to a first direction, which corresponds to the direction of the static magnetic field and to the polarization direction of the nuclear spin of the second element. Moreover, the second direction corresponds to the direction of an applied alternating magnetic field, the frequency of which corresponds to the Larmor frequency of the Larmor precession of the nuclear spin of the second element about the static magnetic field.
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公开(公告)号：US11988619B2
公开(公告)日：2024-05-21
申请号：US17629171
申请日：2020-07-22
发明人： Jan Berend Meijer , Robert Staacke , Nils Meijer , Bernd Burchard
CPC分类号： G01N24/006 , C01B32/26 , C01B32/28 , C09K11/65 , C01P2002/52 , C01P2006/60 , C01P2006/88
摘要： A sensor system is based on diamonds with a high density of NV centers. The description includes a) methods for producing the necessary diamonds of high NV center density, b) characteristics of such diamonds, c) sensing elements for utilizing the fluorescence radiation of such diamonds, d) sensing elements for utilizing the photocurrent of such diamonds, e) systems for evaluating these quantities, f) reduced noise systems for evaluating these systems, g) enclosures for using such systems in automatic placement equipment, g) methods for testing these systems, and h) a musical instrument as an example of an ultimate application of all these devices and methods.
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公开(公告)号：US11977140B2
公开(公告)日：2024-05-07
申请号：US17807855
申请日：2022-06-20
IPC分类号： G01V3/00 , G01R33/24 , G01R33/48 , G01R33/485 , G01R33/561
CPC分类号： G01R33/485 , G01R33/243 , G01R33/4828 , G01R33/5616
摘要： The present disclosure provides a system for MRI. The system may obtain a plurality of echo signals relating to a subject that are excited by an MRI pulse sequence applied to the subject. The system may perform a quantitative measurement on the subject based on the plurality of echo signals. The MRI pulse sequence may include a CEST module configured to selectively excite exchangeable protons or exchangeable molecules in the subject, an RF excitation pulse applied after the CEST module configured to excite a plurality of gradient echoes, and one or more refocusing pulses applied after the RF excitation pulse. Each of the refocusing pulses may be configured to excite one or more spin echoes. The one or more spin echoes excited by at least one of the one or more refocusing pulses may include a symmetric spin echo and one or more asymmetric spin echoes.
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公开(公告)号：US11927655B2
公开(公告)日：2024-03-12
申请号：US17814950
申请日：2022-07-26
发明人： Hiroki Kondo , Masaaki Umeda , Masanori Ozaki
IPC分类号： G01V3/00 , G01R33/483 , G01R33/56
CPC分类号： G01R33/4835 , G01R33/5608
摘要： A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry sets a pulse sequence to collect plural echo signals by application of a refocusing pulse more than once after application of an excitation pulse once, and collects data on plural slices that are parallel to each other by executing the pulse sequence more than once. The processing circuitry sets the pulse sequence such that a slice thickness for the refocusing pulse becomes larger than a slice thickness for the excitation pulse, and collects the data on the plural slices by executing the pulse sequence without consecutively collecting data on adjacent ones of the plural slices.
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公开(公告)号：US11892533B2
公开(公告)日：2024-02-06
申请号：US17835020
申请日：2022-06-08
发明人： Ryota Sato , Toru Shirai , Suguru Yokosawa , Yo Taniguchi , Yoshitaka Sato , Kazuho Kamba
IPC分类号： G01V3/00 , G01R33/565 , G01R33/56 , G06T5/00 , G06T5/50 , G01R33/567
CPC分类号： G01R33/56554 , G01R33/5608 , G01R33/5676 , G06T5/006 , G06T5/50 , G06T2207/10088
摘要： Distortion generated in an image is effectively corrected in imaging using an EPI sequence such as DWI without extending an imaging time. After one excitation RF pulse of EPI is applied, a navigator scan in which the polarity of the phase encoding is opposite to that of the main scan is performed continuously to the main scan, and the distortion of the image by using the navigator scan data obtained by the navigator scan is corrected. In a case of multi-shot, phase information obtained from the navigator scan data for each shot is used to perform phase correction and multi-shot reconstruction on the main scan data of each shot.
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公开(公告)号：US11852701B2
公开(公告)日：2023-12-26
申请号：US17427127
申请日：2020-01-29
发明人： Angelo Frangeskou , Gavin Morley , Ben Green , Ben Breeze , Matthew Dale , Rajesh Patel
CPC分类号： G01R33/24 , G01R33/445 , G02B6/32 , G02B6/4204
摘要： A defect centre-based sensor is disclosed. The sensor comprises instrumentation which includes a generator for causing excitation in an active element, for example a diamond, and a detector for measuring a transition in the active element. The generator is an optical source and/or the detector is an optical detector. The sensor further comprises an optical waveguide and a sensor head in communication with the source and/or the detector via the optical waveguide. The sensor head houses the active element having at least one defect centre, for example, a nitrogen vacancy, responsive to an applied magnetic field, electric field or temperature and a signal delivery arrangement, for example at least one lens, arranged to optically couple the optical waveguide to the active element.
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