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公开(公告)号：US10928470B2
公开(公告)日：2021-02-23
申请号：US15775047
申请日：2016-11-18
摘要： An image acquisition system (100, 500, 600, 700). The image acquisition system may include at least one processor (110, 502-2, 610, 710) configured to control: a transmitter (112, 612) to form packets for transmission over a high-data-rate (HDR) wireless communication link (HDR-WCL) (124, 624), an image acquisition device (120, 631) to acquire image data and form HDR data, and a scheduler (114, 614) to acquire control information for controlling at least one function of the image acquisition system during the image acquisition, determine a restricted packet size for the packets of the HDR-WCL in accordance with at least deterministic timing requirements of the system, and determine a schedule for transmitting the control information in a corresponding packet of the packets in accordance with the deterministic timing requirements of the image acquisition system and the restricted packet size.
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公开(公告)号：US10416251B2
公开(公告)日：2019-09-17
申请号：US15129872
申请日：2015-03-18
发明人： Arne Reykowski
摘要： A synchronization system (100, 200, 400A, 400B, 600) for magnetic resonance (MR) systems includes a main magnet (104, 404, 692) having a main bore (113, 413) and opposed first and second ends (114); a system controller (110, 610) configured to generate a clock synchronization signal in accordance with a system clock; first and second transmission antennas (132,432, TX1, TX2) at opposite ends of the main magnet and configured to transmit the clock synchronization signal into the main bore of the main magnet; and a radio frequency (RF) portion (120, 660) including at least one reception antenna (136, RX1) and a synchronizer (122). The at least one reception antenna is situated within the main bore of the main magnet and is configured to receive the clock synchronization signal transmitted by the first and second transmission antennas. The synchronizer is coupled to the at least reception antenna and is configured to synchronize a clock of the RF portion in accordance with the received clock synchronization signal.
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公开(公告)号：US11277808B2
公开(公告)日：2022-03-15
申请号：US16960329
申请日：2019-01-08
IPC分类号： H04W56/00
摘要： A base station operating with a system clock includes a transmitter, a receiver, a phase error detector and a controller. The transmitter sends a first RF signal modulated onto a first RF carrier having a first phase over a first channel having a first variable phase delay to a mobile station. The mobile station recovers the first RF carrier, generates a second RF carrier, and synchronizes a local clock using the recovered first RF carrier and/or the second RF carrier. The receiver receives a second RF signal modulated onto the second RF carrier having a second phase over a second channel having a second variable phase delay. The phase error detector determines a phase error signal based on the first and second phases, and the controller generates a control signal based on the phase error signal. The control signal is applied to first and second inverse channel models.
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公开(公告)号：US10852374B2
公开(公告)日：2020-12-01
申请号：US15779868
申请日：2016-11-28
IPC分类号： G01R33/36 , H04B5/00 , H04B7/06 , G01R33/341
摘要： A magnetic resonance (MR) system, including at least one wireless radio-frequency (RF) coil comprising antennas for receiving induced MR signals and an antenna array comprising transmission and reception antennas; a base transmitter system (BTS) having an antenna array comprising a plurality of transmission and reception antennas configured to communicate with the RF coil using a selected spatial diversity (SD) method; and at least one controller to control the BTS and the RF coil to determine a number of transmission and/or reception antennas available, couple the transmission and reception antennas to form corresponding antenna pairings, and determine signal characteristic information (SCI) of the antenna pairings, select an SD transmission method based upon the determined number of antennas and the determined SCI for communication between the BTS and the RF coil, and establish a communication channel between the BTS and the RF coil in accordance with the selected SD transmission method.
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公开(公告)号：US10598744B2
公开(公告)日：2020-03-24
申请号：US15561536
申请日：2016-03-14
IPC分类号： G01R33/36
摘要： A transmission apparatus for legacy magnetic resonance (MR) systems including one or more of a radio transmission portion having coupling to an analog RF cable port of the MR system including at least one first controller, an analog-to-digital converter (A/D), and a transmitter. The first controller controls the A/D to digitize analog magnetic resonance (MR) information received from the RF coil and controls the transmitter to transmit the digitized MR information. A radio reception portion including an analog output port and a coupler for coupling the output port to a legacy cable port input of the legacy system including at least one second controller, a receiver, and a digital-to-analog converter (D/A). The second controller controls the receiver to receive the transmitted digitized MR information, and controls the D/A to perform a digital-to-analog conversion to form a corresponding analog MR signal which is output at the output port.
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公开(公告)号：US10578690B2
公开(公告)日：2020-03-03
申请号：US16396825
申请日：2019-04-29
发明人： Arne Reykowski
IPC分类号： G01R33/36 , G01R33/56 , G01R33/567
摘要： A system and method synchronizes a digitizer clock of a Magnetic Resonance Imaging (MRI) device with a system clock of an imaging device. In a first method, an original reference signal is split into first and second reference signals in which the second reference signal is phase shifted to generate an orthogonal reference signal. A reliability of image data may be determined based upon a product between the first reference signal and the orthogonal reference signal. In a second method, a reference signal is transmitted from the imaging device to the MRI device and a return signal is received from the MRI device to the imaging device. A discrepancy between the digitizer clock and the system clock may be determined based upon the return signal which includes a variable time delay.
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7.发明授权公开(公告)号：US10473738B2
公开(公告)日：2019-11-12
申请号：US15562049
申请日：2016-03-24
IPC分类号： G01R33/36 , G01R33/565 , G01R33/58 , G01R33/341 , G01R33/48 , G01R33/561
摘要： A system for controlling a wireless-type radio frequency (RF) coil apparatus (102, 202, 302, 500) for a magnetic resonance (MR) system including a processor for acquiring emitted radio frequency (RF) signals from a plurality of coils of an RF transducer array including an indication of a local clock signal indicating a time of (RF) signal acquisition; acquiring magnetic field strength information from a plurality of field probes of a magnetic field probe array including an indication of the local clock signal indicating a time of magnetic field strength information acquisition, and forming k-space information based upon the acquired emitted RF signals from the plurality of coils of the RF transducer array and the acquired magnetic field strength information including the indications of the local clock signal.
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公开(公告)号：US09710937B2
公开(公告)日：2017-07-18
申请号：US14648271
申请日：2013-10-21
发明人： Feng Haung , Arne Reykowski
IPC分类号： G06K9/00 , G06T11/00 , G01R33/565 , G01R33/561
CPC分类号： G06T11/008 , G01R33/5611 , G01R33/56509 , G06T2207/10004 , G06T2207/10088
摘要： A medical imaging system (34) includes a memory (45) and one or more processors (60). The memory (45) stores magnetic resonance k-space data (4) and the magnetic resonance data includes non-rigid motion defects. The one or more processors (60) are configured to reconstruct (6) a first image (8) from the magnetic resonance data (4) which includes a high signal to noise ratio and motion artifacts. The one or more processors are further configured to detect and reject (10) portions of k-space (4) which include non-rigid motion defects, and reconstruct (4) a second image (16) from non-rejected portions of k-space (12) and the first image (8).
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公开(公告)号：US11454685B2
公开(公告)日：2022-09-27
申请号：US16766050
申请日：2018-11-27
摘要： A wireless magnetic resonance (MR) signal receiving system comprises a wireless MR coil (20) and a base station (50). The wireless MR coil includes coil elements (22) tuned to receive an MR signal, and electronic modules (24) each including a transceiver (30) and a digital processor (32). Each electronic module is operatively connected to receive an MR signal from at least one coil element. The base station includes a base station transceiver (52) configured to wirelessly communicate with the transceivers of the electronic modules of the wireless MR coil, and a base station digital processor (54). The electronic modules form a configurable mesh network (60) to wirelessly transmit the MR signals received by the electronic modules to the base station. The base station digital processor is programmed to operate the base station transceiver to receive the MR signals wirelessly transmitted to the base station by the configurable mesh network.
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公开(公告)号：US11320501B2
公开(公告)日：2022-05-03
申请号：US16969215
申请日：2019-01-30
摘要： A clocked electronic device, such as a wireless magnetic resonance (MR) receive coil (20), comprises a wireless receiver or transceiver (30) configured to receive a propagation-delayed wireless clock synchronization signal (54) comprising first and second propagation-delayed carrier signals at respective first and second carrier frequencies separated by a frequency difference, a clock (60) comprising a local oscillator (62) driving a digital counter (64), and at least one electronic signal processing component (66) configured to perform clock synchronization. This includes determining a wrap count (k) from a phase difference (φ1) between phases of the first and second propagation-delayed carrier signals, unwrapping a wrapped phase (φ2,wrapped) of the propagation-delayed wireless clock synchronization signal using the wrap count to generate an unwrapped phase (φ2,wrapped), and synchronizing the clock using the unwrapped phase.
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