公开(公告)号：US11940518B2

公开(公告)日：2024-03-26

申请号：US17704874

申请日：2022-03-25

申请人： Siemens Healthcare GmbH

发明人： Andreas Greiser ,  Carmel Hayes ,  Mario Zeller

IPC分类号： G01V3/00 ,  A61B5/00 ,  G01R33/483 ,  G01R33/54

CPC分类号： G01R33/543 ,  A61B5/004 ,  G01R33/4838 ,  A61B5/4542

摘要： The disclosure relates to a technique for providing an image of diagnostically relevant area of a jaw region of a patient by means of a magnetic resonance apparatus by capturing information about the jaw region of the patient, which comprises at least one reference to a position and/or an extent of the diagnostically relevant area of the jaw region. The technique also includes adjusting a parameter of a magnetic resonance measurement as a function of the captured information about the jaw region of the patient, carrying out the magnetic resonance measurement with the adjusted parameter, capturing image data of the jaw region of the patient, reconstructing an image of the diagnostically relevant area of the jaw region as a function of the captured image data, and providing the image of the diagnostically relevant area of the jaw region of the patient.

公开(公告)号：US11929955B2

公开(公告)日：2024-03-12

申请号：US17891360

申请日：2022-08-19

申请人： Samsung Electronics Co., Ltd.

发明人： Aris Papasakellariou ,  Joon-Young Cho

IPC分类号： G01R33/483 ,  G01R33/485 ,  G01R33/56 ,  H04L1/1607 ,  H04L5/00 ,  H04W72/20 ,  G01R33/50 ,  H04L1/00

CPC分类号： H04L5/0053 ,  G01R33/4838 ,  G01R33/485 ,  G01R33/5605 ,  G01R33/5608 ,  H04L1/1671 ,  H04L5/0055 ,  H04W72/20 ,  G01R33/50 ,  H04L1/0026 ,  H04L5/0007

摘要： An apparatus and method are provided for transmitting control information and data in a DFT based communication system. The method includes placing a reference signal onto a first symbol among a plurality of symbols in one slot; placing a HARQ-ACK onto a second symbol first placed after the first symbol in the one slot; placing the data onto other symbols except for the first symbol; and transmitting a signal including the reference signal, the HARQ-ACK and the data. A part of CQI information is further placed onto at least one symbol, except for the first symbol, in case that the CQI information is present for transmission in the one slot.

公开(公告)号：US11703558B1

公开(公告)日：2023-07-18

申请号：US17736670

申请日：2022-05-04

申请人： GE Precision Healthcare LLC

发明人： Hao Shen

IPC分类号： G01R33/48 ,  G01R33/483 ,  G01R33/56 ,  G01R33/565

CPC分类号： G01R33/4828 ,  G01R33/4838 ,  G01R33/5608 ,  G01R33/5659

摘要： A method to compensate for chemical shift displacement includes, prior to applying an imaging pulse sequence to acquire MRI data of a subject, applying a first saturation pulse within a slice location of an imaging volume of the subject in which the MRI data is to be acquired, wherein the first saturation pulse results in a first chemical shift displacement between water and fat in a first spatial saturation band. The method also includes, prior to applying the imaging pulse sequence, subsequently applying a second saturation pulse within the slice location, wherein the second saturation pulse results in a second chemical displacement between the water and the fat in a second spatial saturation band that results in a final spatial saturation band being free of chemical shift displacement after application of the second saturation pulse, the second chemical shift displacement being different from the first chemical shift displacement.

公开(公告)号：US20190011516A1

公开(公告)日：2019-01-10

申请号：US16027895

申请日：2018-07-05

申请人： The General Hospital Corporation

发明人： Phillip Zhe Sun ,  Iris Yuwen Zhou

IPC分类号： G01R33/483 ,  G01R33/485 ,  G01R33/56

CPC分类号： G01R33/4838 ,  G01R33/485 ,  G01R33/50 ,  G01R33/5605 ,  G01R33/5608

摘要： A system and method is provided that includes acquiring chemical exchange saturation transfer (CEST) data with the MRI system and generating an acquired Z-spectrum (Z) from the CEST data. The system and method also includes computing an estimated direct water saturation (Z′) based using at least one of relaxation measurements derived from the CEST data or imaging parameters used to acquire the CEST data with the MRI system, computing a direct saturation corrected Z-spectrum (ΔZ) using the acquired Z-spectrum (Z) and the estimated direct water saturation (Z′), and generating a CEST image of the subject using the direct saturation corrected Z-spectrum (ΔZ).

公开(公告)号：US20180329007A1

公开(公告)日：2018-11-15

申请号：US15774839

申请日：2016-11-09

申请人： ST. JUDE CHILDREN'S RESEARCH HOSPITAL

发明人： Junyu Guo ,  Wilburn E. Reddick

IPC分类号： G01R33/485 ,  G01R33/46

CPC分类号： G01R33/485 ,  G01R33/4616 ,  G01R33/4838

摘要： Systems, methods, and other embodiments associated with phase cycled magnetic resonance spectroscopic imaging (PCSI). According to one embodiment, a method includes applying an excitation radio frequency (RF) pulse having a low flip angle to a sample. The method further includes adjusting the phase of the RF to sweep through a frequency range based, at least in part, on PCSI. Sampling is then performed in the frequency range. The method also includes receiving a set of data based, at least in part, on the sampling in the frequency range.

公开(公告)号：US09952302B2

公开(公告)日：2018-04-24

申请号：US14683581

申请日：2015-04-10

申请人： Siemens Aktiengesellschaft

发明人： Thorsten Feiweier

IPC分类号： G01V3/00 ,  G01R33/565 ,  G01R33/483 ,  G01R33/561 ,  G01R33/563

CPC分类号： G01R33/565 ,  G01R33/4838 ,  G01R33/5616 ,  G01R33/56341 ,  G01R33/5659

摘要： In a method and apparatus for recording MR signals with an image-recording sequence with which preparation gradients for preparing the MR signals are switched before the signal readout and readout gradients, in order to predominantly record the MR signal components with a desired signal coherence pathway in the readout segment, the signal components with an undesired signal coherence pathway are suppressed by dephasing gradients. The dephasing gradients are determined independently of the time intervals in which the preparation gradients are switched, and only in dependence on the effective size of the gradient moments of the preparation gradients.

公开(公告)号：US20180099157A1

公开(公告)日：2018-04-12

申请号：US15727379

申请日：2017-10-06

申请人： Ion Beam Applications S.A.

发明人： Damien PRIEELS ,  Erik VAN DER KRAAIJ ,  Sébastien HENROTIN ,  Caterina BRUSASCO

IPC分类号： A61N5/10 ,  A61B5/055 ,  A61B5/00

CPC分类号： A61N5/1048 ,  A61B5/055 ,  A61B5/742 ,  A61B5/7425 ,  A61B5/743 ,  A61N5/103 ,  A61N5/1049 ,  A61N5/1067 ,  A61N5/1077 ,  A61N2005/1055 ,  A61N2005/1087 ,  G01R33/4808 ,  G01R33/4838 ,  G01R33/5602

摘要： The present disclosure relates to a method and a medical apparatus for visualizing a hadron beam traversing an organic body. In one implementation, the method may include capturing a magnetic resonance (MR) image including a volume of irradiated excitable atoms surrounding a hadron beam and having a magnetic susceptibility modified by the hadron beam captured as a hyposignal. For example, a hyposignal may be obtained by saturating the spins of the irradiated excitable atoms before capturing an MR image based on excitation of excitable atoms not affected by the hadron beam.

公开(公告)号：US20170371016A1

公开(公告)日：2017-12-28

申请号：US15539182

申请日：2015-12-21

申请人： GENERAL ELECTRIC COMPANY

发明人： Mitsuharu Miyoshi ,  Naoyuki Takei

IPC分类号： G01R33/561 ,  G01R33/483 ,  G01R33/48 ,  G01R33/56 ,  G01R33/28

CPC分类号： G01R33/561 ,  G01R33/288 ,  G01R33/4818 ,  G01R33/482 ,  G01R33/4824 ,  G01R33/4838 ,  G01R33/543 ,  G01R33/5605 ,  G01R33/5607 ,  G01R33/5635

摘要： A magnetic resonance imaging apparatus comprises a scanning unit for performing a pulse sequence PS including a MT (Magnetization Transfer) pulse b for lessening signals from the cerebral parenchyma (white matter and gray matter). The scanning unit performs the pulse sequence PS in periods of time P1 and P3 in the pulse sequence PS so that the MT pulse b is applied every repetition time TR, while it performs the pulse sequence PS in a period of time P2 in the pulse sequence PS so that no MT pulse b is applied.

公开(公告)号：US09739861B2

公开(公告)日：2017-08-22

申请号：US13865796

申请日：2013-04-18

申请人： Travis B. Smith ,  Krishna S. Nayak

发明人： Travis B. Smith ,  Krishna S. Nayak

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

CPC分类号： G01R33/56 ,  G01R33/4838 ,  G01R33/561

摘要： An MRI scanner may include one or more gradient waveform generators, gradient amplifiers, gradient coils, an RF waveform generator, an RF amplifier, an RF coil, a superconducting magnet, an RF detector; a digitizer, and a computer system that controls the one or more gradient waveform generators and the RF waveform generator so as to generate a magnetization saturation preparation pulse sequence that includes a tip-down pulse that is insensitive to RF field inhomogeneity followed by a tip-back pulse that employs a conjugate symmetry constraint in its energy spectrum.

公开(公告)号：US20170082715A1

公开(公告)日：2017-03-23

申请号：US15227359

申请日：2016-08-03

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Joon-sung CHOI ,  Dae-ho LEE ,  Sang-young ZHO

IPC分类号： G01R33/563 ,  A61B5/02 ,  A61B5/026 ,  A61B5/055

CPC分类号： G01R33/5635 ,  A61B5/02007 ,  A61B5/026 ,  A61B5/0555 ,  G01R33/4835 ,  G01R33/4838 ,  G01R33/561 ,  G01R33/56308

摘要： A method, which is performed by an MRI apparatus, of scanning a blood vessel, includes: sequentially applying, according to a time-of-flight (TOF) method, radio frequency (RF) pulses respectively to first grouped slabs during a first repetition time (TR); sequentially acquiring MR signals respectively corresponding to the RF pulses applied during the first TR; sequentially applying, according to the TOF method, RF pulses respectively to second grouped slabs during a second TR; and sequentially acquiring MR signals respectively corresponding to the RF pulses applied during the second TR.