Siemens Healthcare Gmbh

Siemens Aktiengesellschaft

Huawei Technologies Co., Limited

Peking University

Siemens Healthineers Ag

Aac Acoustic Technologies (shenzhen) Co., Ltd.

Aac Microtech (changzhou) Co, , Ltd.

Jin Qiang He

De He Weng

Fang Dong

Jing Zhao

Dan Li

Bin Kuang

Shu Qun Xie

Guang Bao Dai

Xinnan Lin

Haijun Lou

The present disclosure provides techniques for determining a respiration phase by extracting a distance characteristic value, a score characteristic value, and an area characteristic value from the respiration signal, wherein the distance characteristic value, the score characteristic value and the area characteristic value are used to indicate waveform variation between two adjacent waveforms in the respiration signal. The techniques include training a respiration signal model according to the distance characteristic value, the score characteristic value, and the area characteristic value to determine the respiration phase of the respiration signal using the respiration signal model.

Method and apparatus for determining respiration phase, magnetic resonance imaging method and system

The disclosure relates to techniques for triggering magnetic resonance data acquisition. The techniques include detecting a respiration direction of a respiration signal of an acquisition subject, predicting in real time an amplitude peak value of an expiration signal in the current respiration period according to the real-time respiration signal of the acquisition subject, multiplying the amplitude peak value by a preset coefficient, and using the product as a trigger point threshold of the current respiration period. When it is determined that an expiration stage of the current respiration period is starting, the techniques also include calculating in real time or periodically the absolute value of the difference between the amplitude of the current expiration signal and the trigger point threshold currently calculated, and if the absolute value of the difference is less than a preset difference threshold, then triggering MR data acquisition.

Respiratory modeling using deep learning for MR imaging with pilot tone navigation

In a method, device and digital receiver for transmitting signals in magnetic resonance imaging, M channels of digital signals are received over M receiving channels from a digital matrix processor. One receiving channel corresponds to one channel of digital signal and the M channels of digital signals include one channel of main signal and (M&#x2212;1) channels of high-order signals. The M channels of digital signals are combined into N channels of combined signals, wherein the main signal and at least one channel of high-order signal are combined into one channel of combined signal, or at least two channels of high-order signals are combined into one channel of combined signal. N and M are both positive integers, N is less than M, and M is greater than or equal to 2.

Method, device and digital receiver for transmitting signals in magnetic resonance imaging

A digital mode matrix phase calibration includes acquiring an actual phase deviation &#x3b8;'forming an actual phase deviation matrix &#x3b8;&#x2032; of a factory system; calculating an ideal phase deviation forming an ideal phase deviation matrix; calculating a phase deviation of the actual phase deviation and the ideal phase deviation; acquiring a maximum value of the phase deviation; when the maximum value &#x394;&#x3b8;is less than a preset threshold &#x3b4;, calculating a field system phase deviation &#x3b8;&#x2033;, and a field system phase deviation matrix &#x3b8;&#x2033; formed by the field system phase deviation &#x3b8;&#x2033;subjecting a field system to phase calibration. By acquiring only one row and one column in the phase deviation matrix, the technical solution in embodiments of the present invention can fit phase deviations of other rows and columns, and the method subjects the system to phase calibration quickly.

Phase deviation acquisition method and system, and phase calibration method and system

A magnetic resonance signal correction method, apparatus and system are provided. The method includes receiving a magnetic resonance signal through a radio frequency receiving channel, and correcting the magnetic resonance signal with a signal mapping relationship of the radio frequency receiving channel.

Magnetic resonance signal correction

An information transfer method, includes: receiving N pieces of information and N pieces of corresponding identification information sent by a server according to a data obtaining request; obtaining attribute information of at least two pieces of information in the N pieces of information, where the attribute information includes at least one of the following attributes of the at least two pieces of information: content separability or location adjustability; generating to-be-posted information according to the attribute information of the at least two pieces of information and an operation instruction of a user for the at least two pieces of information; and determining identification information corresponding to the to-be-posted information and second indication information corresponding to the to-be-posted information, and sending the server the identification information and the second indication information corresponding to the to-be-posted information.

Information transfer method, client, and server

A tunneling field effect transistor, comprising a gate electrode layer, a gate dielectric layer, a source region, a connected region and a drain region, wherein the source region comprises a first source region and a second source region, the second source region comprising an inner layer source region and an outer layer source region. The connected region comprises an expansion region and a high-resistance region. The doping types of materials of the inner layer source and the outer layer source region are opposite, and the forbidden bandwidth of the material of the inner layer source region is less than that of the outer layer source region. The contact surface formed by way of covering the inner layer source region by the outer layer source region is a curved surface. Since a contact surface of an outer layer source region and an inner layer source region of a tunneling field effect transistor is of a curved surface structure, the contact area of the outer layer source region and the inner layer source region is increased, and the probability of tunneling of a carrier through the contact surface is increased. Therefore, the On-state current is increased, thereby having a good current drive capability.

Tunnelling field effect transistor

Disclosed is a micro-speaker. A micro-speaker includes a frame, a magnetic circuit unit accommodating in the frame, a vibrating unit, an assistant coil attached to the frame and disposed below the diaphragm. The vibrating unit includes a diaphragm and a voice coil driving the diaphragm. The assistant coil includes an upper surface facing the diaphragm and an inclined surface connecting the upper surface and disposed closer to the voice coil than the upper surface.

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Shenzhen, China

Jin Qiang He