Shanghai United Imaging Healthcare Co., Ltd.

University of Houston System

Uih America, Inc.

General Electric Company

Huawei Technologies Co., Limited

Shenzhen Yijuyun Technology Co., Ltd

Weiguo Zhang

Qiang Zhang

Renkuan Zhai

Chaohong Wang

Kunyu Tsai

Yu Ding

Guobin Li

Jian Xu

Yuan Zheng

Zhaopeng Li

P Shiv Halasyamani

Yu Wang

Qi Liu

Jingyuan Lyu

Lingzhi Hu

Rong Li

Lele Zhao

Stefan Rieken

Libo Wu

Xiaomao Gong

Hongwei Yu

Shijiang Liu

Chenggang Huang

Jingsheng Zhou

Gongji Zhang

Hongping Wu

Baozhong Shen

The present disclosure provides a system for SMS MRI. During each of a plurality of frames, the system may cause an MRI scanner to apply a plurality of PE steps to each of a plurality of slice locations of a subject to acquire echo signals. A phase modulation magnetic field gradient may be applied during each of at least some of the PE steps in the frame. For each frame, the system may reconstruct an aliasing image representative of the slice locations in the frame based on the corresponding echo signals. The system may also generate a plurality of reference slice images based on the aliasing images. The system may further reconstruct at least one slice image based on the aliasing images and the reference slice images. Each of the slice image may be representative of one of the slice locations in one of the frames.

Systems and methods for simultaneous multi-slice magnetic resonance imaging

A device comprising a nonlinear optical (NLO) material according to the formula XLiAlBOF. A device comprising a nonlinear optical material (NLO) according to the formula KSrCOF, wherein the NLO comprises at least one single crystal. A nonlinear optical material selected from the group consisting of KSrCOF RbBaLiAlBOF and KSrLiAlBOF.

Nonlinear optical material

The method for magnetic resonance imaging described in the present disclosure may include generating an inversion recovery image by scanning an object using an inversion recovery sequence. The method may also include generating a real part image corresponding to the inversion recovery image by processing the inversion recovery image. The method may also include obtaining a signal line of a reference image without inversion recovery, the reference image corresponding to the real part image. The method may also include determining a phase-corrected signal line of the reference image by performing a phase correction on the signal line of the reference image. The method may also include determining a polarity of the real part image based on the phase-corrected signal line of the reference image.

Magnetic resonance imaging method

Systems and methods for generating an image of a subject using a magnetic resonance imaging (MRI) device may be provided. The method may include obtaining a radial sampling scheme including a plurality of radial lines that each pass through a center of k-space. The method may include selecting the plurality of radial lines of the radial sampling scheme. Each of the plurality of radial lines may be selected in a random and unrepeatable manner. The method may include acquiring k-space data along the selected radial lines. The method may include reconstructing at least one image of the subject based on the acquired k-space data.

System and method for magnetic resonance imaging with radial sampling of k-space

A system and method for magnetic resonance imaging reconstruction using novel k-space sampling sequences is provided. The method includes dividing k-space into a plurality of regions along a dividing direction; scanning an object using a plurality of sampling sequences; acquiring a plurality of groups of data lines; filling the plurality of groups of data lines into the plurality of regions of the k-space; and reconstructing an image based on the filled k-space.

System and method for magnetic resonance imaging reconstruction using novel k-space sampling sequences

The invention relates to the technical field of cooking, in particular to a recipe program code generation method and a recipe compiling cloud platform system. The recipe program code generation method comprises the following steps: firstly, establishing equipment attribute and control description terms which are associated with corresponding attributes or cooking motions of equipment and also associated with a description keyword term bank; then, selecting corresponding cooking equipment and inputting a literal description recipe; finally, analyzing description keywords in the literal recipe by compiling software and associating the description keywords with the equipment attribute and control description terms of the cooking equipment of the corresponding type, so that recipe program codes are generated. According to the recipe compiling method and the cloud platform system of the invention, the recipe program codes can be generated through automatic conversion as long as the corresponding cooking equipment is selected and the literal recipe is input, recipe editors do not need to be familiar with computer programming languages, the technical problems of recipe program code generation in the prior art are solved, the recipe program generation efficiency and effect are improved, and it is ensured that the recipe program codes can be executed on the cooking equipment safely and reliably.

Recipe program code generation method and recipe compiling cloud platform system

A method and a system for measuring and calibrating an imaging magnetic field in a magnetic resonance apparatus are provided. The method includes: providing the imaging magnetic field, where the imaging magnetic field is adapted for scanning an object; sampling a signal corresponding to the imaging magnetic field; processing the signal to obtain an actual magnetic field intensity; and calibrating based on a difference between the actual magnetic field intensity and a target magnetic field intensity. The system includes: a magnetic component, adapted for scanning an object to be imaged; a sampling unit, adapted for sampling a signal corresponding to the imaging magnetic field; a processing unit, adapted for processing the signal to obtain an actual magnetic field intensity; a calibration unit, adapted for calibrating based on a difference between the actual magnetic field intensity and a target magnetic field intensity; and a control unit, adapted for controlling the system.

Method and system for measuring and calibrating imaging magnetic field in magnetic resonance apparatus

A system and method for modifying RF pulse generated by an MRI system are provided. The method may include: obtaining an excitation variable-rate selective excitation (VERSE) factor and a refocusing VERSE factor; determining a first slice-selection gradient waveform based on an excitation factor and a reference excitation slice-selection gradient waveform; determining a second slice-selection gradient waveform based on a refocusing factor and a reference refocusing slice-selection gradient waveformslice-selection gradient waveformslice-selection gradient waveform; determining an excitation pulse based on the first slice-selection gradient waveform; determining a refocusing pulse based on the second slice-selection gradient waveform, wherein a ratio of the decimal part of the excitation factor to the decimal part of the refocusing factor is equal to a ratio of the amplitude of the first reference waveform to the amplitude of the reference refocusing slice-selection gradient waveform.

System and method for amplitude reduction in RF pulse design

A method and system for reducing Nyquist ghost artifact is provide. The method may include: obtaining a plurality of measured data sets; determining, based on the plurality of measured data sets, in a data space, a plurality of convolution kernels, each convolution kernel relating to all of the plurality of measured data sets; generating, based on the plurality of convolution kernels and the plurality of measured data sets, in the data space, a plurality of synthetic data sets; generating, based on the plurality of synthetic data sets and the plurality of measured data sets, in the data space, a plurality of combined data sets, each combined data set relating to one of the plurality of synthetic data sets and a corresponding measured data set of the plurality of measured data sets; and reconstructing, based on the plurality of combined data sets, an image.

System and method for reducing nyquist ghost artifact

A monolithic crystal having the atomic formula WXYZ, with at least one dimension greater than about 10 mm. A method for top seed, solution growth of a monolithic crystal, wherein the method includes the steps of: preparing a precursor, forming a seed crystal, and forming the monolithic crystal. Some configurations of the method include the differential control of the crystal flux temperature in a furnace and the rotational frequency of a seed crystal in the crystal flux.

Method of producing a monolithic crystal by top-seeded solution growth from a liquid crystal flux comprising a mixture of solid precursors

A method and an apparatus for reconstruction of magnetic resonance imaging are provided. The method includes collecting data in each initial channel and filling the data in an initial K-space, the data including data in a calibration data area and data in an undersampled area; constructing a target virtual space, and mapping initial K-space data to the target virtual space; constructing, in the target virtual space, a target optimized virtual space by retaining channel data having a high signal-to-noise ratio; filling out the undersampled area in the target optimized virtual space, and acquiring complete data in the target optimized virtual space; converting the complete data in the target optimized virtual space to an image domain to obtain an image. The method advantageously increases the signal-to-noise ratio of the channel data and significantly improves the image quality.

Method and apparatus for reconstruction of magnetic resonance imaging

A light intensity detection system for a wind turbine including a single light sensor adapted to measure the intensity of light, a housing for protecting the single light sensor from environmental influences, and a driving mechanism configured to allow the single light sensor to receive light from a first direction at a first time and from a second direction at a second time.

Wind turbine shadow flicker protection system having a driving mechanism allowing a single light sensor to receive light at different times and directions

Growing community of inventors

Houston, TX, United States of America

Weiguo Zhang