Ge Precision Healthcare LLC

Ge Medical Systems Global Technology Company, LLC

Qingyu Dai

Kun Wang

Yaan Ge

Jiabin Yao

Qilin Lu

Liyuan Jin

Fan Yang

Haoyang Xing

Dan Wu

Weinan Tang

Longqing Wang

Yanting Huo

Yuwen Li

Yu Liu

Yongchuan Lai

Saban Kurucay

Kai Cao

Yuechen Liu

Sheng Tong

Anmou Liao

Shiyu Li

LiYa Ma

Siqing Weng

Jonathan C West

Xiaolan Liu

Chun Lai Xiao

A method for determining a radio frequency power compensation parameter includes: using a plurality of scan sequences to scan a phantom in a plurality of slice positions by using a plurality of excitation frequencies; acquiring a plurality of magnetic resonance signals from the phantom corresponding to the plurality of slice positions and the plurality of excitation frequencies; and determining, according to the plurality of magnetic resonance signals, radio frequency power compensation parameters corresponding to respective slice positions in a three-dimensional space at respective excitation frequencies.

Magnetic resonance imaging system, compensation parameter determining method, and scanning and imaging method

Embodiments of the present invention disclose a magnetic resonance system and a magnetic resonance scanning control method, the method including: acquiring a three-dimensional body model of a scan subject; on the basis of the three-dimensional body model, estimating a value of a first body parameter and a value of a second body parameter of the scan subject; and determining a specific absorption rate on the basis of a site to be scanned of the scan subject, the value of the first body parameter and the value of the second body parameter.

Magnetic resonance system and magnetic resonance scanning control method

Embodiments of the present invention disclose a magnetic resonance system and a magnetic resonance scanning control method, the method comprising: acquiring a three-dimensional body model of a scan subject; receiving a user operating instruction to mark an implant in the three-dimensional body model of the scan subject to generate a simulated scan subject; acquiring current positioning information of the scan subject on a scanning table, and determining, on the basis of the current positioning information, virtual positioning information of the simulated scan subject in a virtual space, the virtual space comprising distribution information of a spatial field gradient of the magnetic resonance system; and on the basis of the virtual positioning information, evaluating a safety risk related to the spatial field gradient.

Embodiments of the present invention provide a magnetic resonance scanning method and system and a computer-readable storage medium. The method comprises: when an imaging volume of an object is at a current position, performing a current imaging scan on the imaging volume based on a predicted overall B0 field map at the current position.

Magnetic resonance scanning method and system and computer-readable storage medium

An embodiment of the present invention provides a scanning control system for a magnetic resonance imaging system, comprising: a first 3D camera, configured to capture a three-dimensional image of a scan subject located on a scanning table of the magnetic resonance imaging system; a processing device, configured to identify body position information of the scan subject based on the three-dimensional image; and a control device, configured to set scanning parameters related to a body position based on the body position information.

Scanning control system and method for magnetic resonance imaging system

Embodiments of the present application provide a magnetic resonance system and a shimming method and an imaging method thereof. The shimming method comprises: performing a scout scan on a subject to be examined, and obtaining phase data of a plurality of slice positions; determining three-dimensional space static magnetic field information according to the phase data of the plurality of slice positions; and determining a shimming value of a slice in a region of interest according to the three-dimensional space static magnetic field information.

Magnetic resonance system and shimming method and imaging method thereof

A positioning method for a magnetic resonance imaging system comprises: acquiring a scattering parameter curve of a body coil during a process in which an examination table carrying a subject under examination enters a scanning bore of the magnetic resonance imaging system; acquiring the position of a part to be examined of the subject under examination on the basis of the scattering parameter curve; and moving the examination table on the basis of the position of the part to be examined such that the part to be examined is located at the center of the scanning bore.

Positioning method for magnetic resonance imaging system, and magnetic resonance imaging system

Embodiments of the present invention provide a method for identifying a body position of a detection object in medical imaging, a medical imaging system, and a computer-readable storage medium. The method comprises: receiving an image group by a trained deep learning network, the image group comprising a plurality of pre-scan images in a plurality of directions obtained by pre-scanning a detection object; and outputting body position information of the detection object by the deep learning network.

Medical imaging system, method for identifying body position of detection object, and storage medium

Embodiments of the present invention provide a motion monitoring method during MR imaging, comprising: acquiring a noise of a receiving coil before or after each imaging repetition time of an imaging scanning sequence; determining main coil channels associated with a motion of a scanned object in the receiving coil; determining a sum of squares of amplitudes of noises of the respective main coil channels; and filtering the sum of squares of amplitudes of noises of the main coil channels to obtain a motion track of the scanned object.

Motion monitoring method during MR imaging, computer process, and storage device

A magnetic resonance imaging (MRI) system radio frequency (RF) subsystem and a coil decoupling apparatus and method used therein. The MRI system RF subsystem comprises a body coil and a surface coil for receiving MR signals, and also comprises a preamplifier for amplifying the MR signals received by the body coil; the coil decoupling apparatus comprises a phase shifter, which is connected between the preamplifier and the body coil, and used for receiving an external voltage regulation signal to regulate an operation voltage thereof, wherein the voltage regulation signal is determined according to a current patient's weight.

Magnetic resonance imaging system radio frequency subsystem and coil decoupling apparatus and methods used therein

Spike noise in a k-space dataset acquired in magnetic resonance imaging may be removed by generating a mask including a set of data points which constitute spike noise in the k-space dataset based on the acquired k-space dataset via a trained deep learning network, the mask corresponding to a location of the spike noise in the acquired k-space dataset. An image reconstructed based on the acquired k-space dataset and the mask may be displayed.

Methods and systems for removing spike noise in magnetic resonance imaging

A method for pre-distorting an exciter includes obtaining a characteristic curve of a radio frequency (RF) amplifier, obtaining a first relationship between a gain amplitude correction value and an input power and a second relationship between a gain phase correction value and the input power based on the characteristic curve, obtaining a transmission gain for use in a scan from a magnetic resonance pre-scan, and obtaining the gain amplitude correction value and the gain phase correction value of an input of the exciter based on the input of the exciter, the transmission gain, the first relationship, and the second relationship. An input of the exciter is pre-distorted using the gain amplitude correction value and the gain phase correction value.

Method and device for pre-distorting an exciter and predistortion exciter

An MRI apparatus which obtains a tomogram of an object by utilizing magnetic resonance includes a calibrating device which figures out a relationship between a center frequency and an optimal gain of RF transmission with respect to a predetermined range of central frequencies, a saving device which saves information expressing said relationship, and a setting device which sets the RF transmission gain according to the center frequency during subsequent scanning by utilizing the saved information.

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Beijing, China

Qingyu Dai