Shenzhen Futaihong Precision Industry Co., Ltd.

Fih (hong Kong) Limited

Siemens Healthcare Gmbh

Avago Technologies General IP (singapore) Pte. Ltd.

Siemens Healthineers Ag

Siemens Aktiengesellschaft

Huawei Technologies Co., Limited

Delta Electronics (shanghai) Co., Ltd

Tyco Electronics (shanghai) Co., Ltd.

Sutech Trading Limited

Shennan Circuits Co., Ltd.

Shenzhen Ami Technology Co., Ltd

Shanghai Xiaoi Robot Technology Co., Ltd.

Tyco Electronics (shenzhen) Co. Ltd.

Zhi Bin Li

Chih-Chiang Chang

Zhi-Yun Shen

Qiu Yi Zhang

Jianmin Wang

Lan Jin Wang

Haitao Xia

Zheng Shi

Jian Wang

Hong Cheng

Wen Ming Li

Yao Zhao

Rui Ling Wu

Ying Lun Wang

Xiang-Guo Zhao

Shaohua Yang

Markus Vester

Fan Wang

Zhang Zhang

Zhe Liu

Dandan Zhang

Tao Su

Jinlin Peng

Yingcong Deng

Yongzhao Cao

Qinglong Zeng

Xuebin Wu

Scott M Dziak

Pinpin Zhu

Yaodong Wu

Zhiwei Wu

Ting Qiang Xue

Fei Lu

Dahua Qin

Tong Tong

Lu Pan, Sr

Aibin Qiu

Roberto Francisco-Yi Lu

Jianfei Zheng

Rui Shen

Hai Bo Yu

Guang Bao Dai

Zhao Li

Jin Su

Bingxu Yu

Si-Quan Chen

Xiao Yuan Ma

Jian Hong Liu

Jia Lin He

Zhiyong Cai

Linjiang Guo

Weng Ming Li

Xiangdong Guo

Xuechuan Han

Rong Cui

Wei Ming Dong

Zhenbo Liu

Zhenliang Chen

A movable medical bed system may include a bed body and a power supply apparatus. The power supply apparatus may include an electrical energy receiver and an electrical energy transmitter. The electrical energy receiver is arranged on the bed body. The electrical energy transmitter is configured to be connected to a power source. The bed body is able to move to a working position relative to the electrical energy transmitter. When the bed body is located at the working position, the electrical energy receiver can engage in electrical energy transmission with the electrical energy transmitter without plugging-in. The movable medical bed system helps to make the supply of power more convenient.

Movable medical bed system and MRI apparatus

A coil decoupling method for a magnetic resonance imaging device, including: sending an instruction causing a transmitter to send a transmitted signal, acquiring a received signal received by a receiver, wherein the received signal is a signal arriving at the receiver after the transmitted signal passes through two coils to be adjusted of a plurality of coils, determining the coupling value between the two coils to be adjusted based on the transmitted signal and the received signal, and sending an instruction for adjusting a decoupling component based on the coupling value.

Coil decoupling for magnetic resonance imaging

A method and apparatus are provided for limiting a B1 field used for magnetic resonance imaging (MRI). The techniques described herein reduce a waste of performance of the B1 field while ensuring patient safety and improving the MR imaging quality.

Method and apparatus for limiting radio frequency alternating magnetic field in magnetic resonance imaging

A method and apparatus for limiting an RF alternating magnetic field in MRI. The method includes: measuring a perpendicular distance between a local coil placed on a scanned part of a patient and the center of a detection hole of a magnetic resonance (MR) scanner; based on the perpendicular distance, determining a deviation between the Bfield strength at the position of the local coil during an MR scan and the Bfield strength at the center of the detection hole; based on the deviation, computing a conversion coefficient for conversion between the Bfield strength at the position of the local coil and the Bfield strength at the center of the detection hole; based on the Bfield strength required when the surface temperature of the local coil is equal to a safe temperature upper limit and the conversion coefficient, computing a maximum permissible field strength of the Bfield at the center of the detection hole. The Bfield may be limited to a smaller but still effective field strength range, reducing wastage of Bfield performance while ensuring patient safety and MR imaging quality.

Limiting RF alternating magnetic field in MRI

A local coil may include: a wireless power receiver, for converting electrical energy to AC electricity, the electrical energy being wirelessly received from a power source; an AC-DC converter, for converting the AC electricity to first DC electricity having a first voltage; a DC-DC converter, for converting the first DC electricity to second DC electricity having a second voltage; a comparator, for comparing the first voltage and the second voltage, and generating a level signal on the basis of a comparison result; and a transmitter, for sending the level signal to the power source, such that the power source adjusts an output power of the electrical energy on the basis of the level signal. The wirelessly supplying of power to a local coil as well as power feedback control is achieved to advantageously increase energy transmission efficiency and system robustness.

Wireless power feedback loop and control system for wireless coil in MRI system

An uplink synchronization method and an apparatus are provided. The method includes: sending, by a network device, a timing advance command to a communications device, where the timing advance command includes a timing advance TA reference value, and the TA reference value corresponds to a carrier in a timing advance group TAG; determining, by the communications device, a TA offset of the carrier based on carrier information of the carrier; and adjusting, by the communications device, an uplink transmission timing of the carrier based on the TA reference value and the TA offset of the carrier.

Uplink synchronization method, and apparatus

The disclosure relates to a hybrid orthogonal signal generator, a coil transmission front-end device, an RF coil system, and an MRI system. The hybrid orthogonal signal generator has an input end for receiving an RF signal, generates a hybrid orthogonal excitation signal on the basis of the RF signal, and provides the hybrid orthogonal excitation signal by means of an output end of the hybrid orthogonal signal generator, and comprises: a first conductor, arranged in a plane and being arc-shaped; and a second conductor having mutual inductance with the first conductor, the second conductor being connected between the input end and output end, wherein the first conductor and second conductor are parallel and arranged as mirror images of each other. The hybrid orthogonal signal generator has a compact size and is suitable for providing hybrid orthogonal excitation signals for an MRI system with a low field strength.

Compact hybrid orthogonal signal generator for MRI front-end

The present disclosure provides a circuit board. The circuit board may include a number of stacked core boards each having a top surface. At least part core boards of the number of stacked core boards may include circuit layers at top surfaces thereof. A groove may be defined through the at least part core boards. A conductive material may be received in the groove configured to couple to the circuit layers of at least two core boards. A cross section of the groove may include a length in a first direction and a length in a second direction, and the length in the first direction may be greater than the length in the second direction. Electroplating solution may capable of contacting any portions of the groove to electroplate, to form the conductive material.

Circuit board

In a device and method for monitoring an RF transmission circuit of an MRI device: a first power measurement signal is acquired that indicates a voltage of a first RF signal provided by an RF power amplifier of the RF transmission circuit; two second power measurement signals are received that each indicate a voltage of one second RF signal, the two second RF signals being generated based on the first RF signal by a bridge of the circuit and transmitted via an RF transmit coil; an inverse matrix calculation is performed based on the two second power measurement signals to obtain a voltage calculation value; the voltage calculation value is compared with the first power measurement signal; an operational status of the RF transmission circuit is determined based on a difference between the voltage calculation value and a voltage value of the first power measurement signal.

High integrated and intelligent tx front-end used in MRI system

A power source supply system for a magnetic resonance imaging (MRI) apparatus that has multiple loads operating in a magnetic field environment, has an AC/DC conversion circuit that converts a supplied AC current to a first DC current having a predetermined first voltage, a branching element that supplies the first DC current in separate paths respectively to the multiple loads, a switching power source, disposed in each of the loads that converts the first DC current to a second DC current having a second voltage capable of being supplied to the load, with a switching frequency of the switching power source being set such that a positive integer frequency multiple thereof is offset from the Larmor frequency of the MRI apparatus.

Magnetic resonance imaging apparatus and a power source supply system therefor

The present invention provides a method for generating a semantic expression for a standard question in a knowledge base. The knowledge base includes multiple standard questions, each standard question has multiple associated similar questions, and the method includes: for each standard question, obtaining multiple similar question segmentation results corresponding to the multiple similar questions of the standard question, where each similar question segmentation result includes word classes to which respective words in a corresponding similar question belong; for each standard question, selecting a phrase from an intersection of multiple similar question segmentation results of the standard question based on phrase occurrence frequencies, to form at least one semantic expression of the standard question, where each phrase includes a predetermined quantity of word classes; for all similar questions of all standard questions, performing standard question matching processing; for each semantic expression created for each standard question, determining whether the semantic expression is matched to at least one similar question of the standard question; and if yes, marking the semantic expression as a first state; or otherwise, marking the semantic expression as a second state; and deleting all semantic expressions in the second state.

Semantic expression generation method and apparatus

A magnetic resonance (MR) signal receiving apparatus has multiple local coils, capable of separately receiving MR signals generated by a body in an MR examination, each of the local coils having multiple antenna units and a time division multiplexing module. The time division multiplexing module enables MR signals received by the antenna units separately to be provided as an output by just one output line. The apparatus also has a reception coil channel selector having multiple input interfaces connected to the respective output lines of the multiple local coils, and a combiner in the reception coil channel selector that combines in time or power, all or a portion of the MR signals of the local coils, to form one or more MR composite signals.

Magnetic resonance signal receiving apparatus, reception coil channel selector and magnetic resonance imaging system

An automatic component loading system is disclosed. The automatic component loading system has a loading device, a conveying device having a plurality of first pin receiving slots and a plurality of first component receiving trays positioned around a circumference of the conveying device, and a position correcting device having at least one pin that corresponds with the plurality of first pin receiving slots.

Automatic component loading system

A receiver of a magnetic resonance imaging system and a magnetic resonance imaging system are provided. The receiver includes a receiving end for receiving an analog magnetic resonance signal from a local coil of the magnetic resonance imaging system, a sending end for sending a digital magnetic resonance signal to an image reconstruction apparatus of the magnetic resonance imaging system, at least two digital processing channels connected to the sending end for digitizing the analog magnetic resonance signal to the digital magnetic resonance signal, and a channel selection unit connected between the digital processing channels and the receiving end for selecting a corresponding digital processing channel from the digital processing channels according to type information about the local coil. The embodiments may be compatible with many types of local coils without re-designing the local coils, which significantly reduces the cost of the system.

Receiver of magnetic resonance system and magnetic resonance system

A method and system for receiving magnetic resonance signals, and a magnetic resonance imaging system are provided. The method includes dividing coil units in a receiving coil array into different coil unit groups. For each of the coil unit groups, correlations are established between carrier frequencies and the signals received by each coil unit in the coil unit group. Low noise amplification is performed, and filtering and frequency mixing is performed on the signals received by all the coil units in the coil unit group according to the correlations to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel. After performing amplification and filtering on the intermediate frequency signals, the intermediate frequency signals are output to an analog-to-digital conversion unit to perform digital sampling so as to obtain digital domain signals.

Receiving method, receiving system for magnetic resonance signals, and magnetic resonance imaging system

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Shenzhen, China

Zhi Bin Li