Abstract: A method of performing a medical imaging process, including: dividing a computing task of a medical imaging system unit into a set of sub-tasks, wherein the computing task is related to a generation of medical image data based on measurement data; selecting at least one sub-task of the set of sub-tasks for external execution; exchanging a sequence of signals including task delegation signals with a plurality of remote computing units, whereby the sequence of signals comprises at least one request signal sent by the medical imaging system unit; outsourcing the at least one selected sub-task to the selected remote computing unit for remotely generating a computing result of the at least one selected sub-task; receiving the generated computing result from the selected remote computing unit; and completing the computing task with the computing result received from the selected remote computing unit.

Abstract: A motion correction method may include: calculating a current motion-corrected MR image based on a current motion parameter of an imaging target and K-space measurement data of the imaging target; calculating current motion-corrected K-space data based on the current motion parameter of the imaging target and the current motion-corrected MR image; calculating a current K-space measurement data error based on the K-space measurement data of the imaging target and the current motion-corrected K-space data; and determining, based on the current K-space measurement data error, whether an iteration end condition is met. If so, using the current motion-corrected MR image as a final motion-corrected MR image to be used. Otherwise, updating the current motion parameter of the imaging target based on the current K-space measurement data error and the current motion-corrected MR image. The method advantageously provides an increased motion correction speed of an MR image.

Abstract: A local control device for a medical imaging system includes a measurement control unit for dividing a computing task into a sequence of consecutive sub-tasks. The computing task is related to a generation of image data based on measurement data. The local control device includes an execution unit for executing the computing task. The local control device includes a selection unit for selecting a sub-task of the consecutive sub-tasks for external execution. The local control device includes an outsourcing unit for outsourcing the selected sub-task to a remote computing source for remotely generating a partial computing result and for receiving the generated partial computing result. The execution unit is arranged to execute the computing task based on the received generated partial computing result.

Abstract: A signal processing method including receiving an original reference radio frequency signal from a receiving antenna group; receiving the time series of the control signal associated with the transmission event of the radio frequency pulses; synchronizing the time series with the original reference radio frequency signal, and determining the echo train in the original reference radio frequency signal in a repetition time of the pulse sequence, wherein the echo train corresponds to the part of the time series associated with the transmission event of the radio frequency pulses in time sequence; setting the sampling points in the domains of the starting point and a first ending point of the echo train; and generating a fitting signal based on the sampling points to eliminate the radio frequency interference signal resulted from the transmission event of the radio frequency pulses.

Abstract: Method acquiring a target physiological motion signal, including: acquiring multi-channel complex signals received by multiple channels; and acquiring, from the multi-channel complex signals using a motion signal synthesis vector corresponding to a target motion signal, a target motion complex signal with interference removed; acquiring data received by multiple channels, the data including data without external interference in a first sub-period and data with external interference in a second sub-period; acquiring an external interference suppression matrix based on the data, and acquiring external interference suppression data based on the data without external interference or the data with external interference and the external interference suppression matrix; acquiring a motion signal correlation matrix of the target motion signal in frequency domain based on a frequency range of the target motion signal; and using, as a motion signal synthesis vector, an eigenvector acquired according to an eigenvalue of

Abstract: An MR imaging method and apparatus and a computer-readable storage medium. The method includes: collecting MR signal data every set time interval according to a stack-of-stars scheme or stack-of-spirals scheme, where in each time interval, MR signal data of each of a plurality of parallel slices arranged along a slice direction is collected as a k-space slice, and the k-space slices of the plurality of parallel slices are stacked into a k-space column along the slice direction; in a process of collecting the MR signal data, performing motion detection by utilizing a pilot tone signal, and marking MR signal data collected during a body motion as motion damage data when the body motion is detected; and performing motion correction on MR signal data after the motion damage data for k-space columns successively collected in a plurality of time intervals, and obtaining a current MR image based on MR signal data obtained after the motion correction and MR signal data before the motion damage data.

Abstract: In a motion correction method, a reference navigation image is obtained before MR data collection is performed on a target region of interest; in a process of performing the MR data collection on the target region of interest, motion detection is performed using a pilot tone signal received by a plurality of coils, and when a motion is detected, MR data collected when the motion occurs is marked as motion damage data; a post-motion navigation image is obtained when the end of the motion is detected by utilizing the pilot tone signal; registration is performed on the post-motion navigation image and the reference navigation image to obtain a motion correction parameter corresponding to the motion; and motion correction on the MR data collection is performed using the motion correction parameter. The method according to the present disclosure advantageously improves MR imaging quality.

Abstract: A medical imaging method for detecting a movement and a magnetic resonance imaging system, wherein the method includes: receiving, through a plurality of channels, a plurality of original first time domain signals recording a movement of an object under examination; transforming, based on a plurality of respiratory frequency components as bases, the plurality of first time domain signals into a vector matrix including representations of phases; computing an eigenvector based on the vector matrix; transforming the first time domain signals into second time domain signals based on the eigenvector, and removing a maximum energy term related to a respiratory movement from the second time domain signals; and determining whether a portion of a non-respiratory body movement is detected, and determining to execute a sequence based on only a first time domain signal in which a portion of a non-respiratory body movement is not detected.

Abstract: In a method for correcting the interference in respiratory navigation, transmitting, during magnetic resonance scanning, a respiratory signal generated by a radio frequency signal generator to a human body; acquiring, as a measured respiratory signal, a respiratory signal passing through the human body and acquired in a local coil, wherein the measured respiratory signal is constituted by a real respiratory signal and an interference signal; determining, according to a respiratory signal coil sensitivity of the real respiratory signal and an interference signal coil sensitivity of the interference signal, a signal relation that is satisfied by the real respiratory signal, the interference signal and the measured respiratory signal; and calculating the signal relation to obtain the real respiratory signal.

Abstract: A signal processing method including receiving an original reference radio frequency signal from a receiving antenna group; receiving the time series of the control signal associated with the transmission event of the radio frequency pulses; synchronizing the time series with the original reference radio frequency signal, and determining the echo train in the original reference radio frequency signal in a repetition time of the pulse sequence, wherein the echo train corresponds to the part of the time series associated with the transmission event of the radio frequency pulses in time sequence; setting the sampling points in the domains of the starting point and a first ending point of the echo train; and generating a fitting signal based on the sampling points to eliminate the radio frequency interference signal resulted from the transmission event of the radio frequency pulses.

Abstract: The present disclosure is directed to image reconstruction techniques used in magnetic resonance imaging. The techniques disclosed include calculating, for each of image reconstruction tasks to be performed, a calculation capability requirement value of the task by a magnetic resonance system, and determining whether the calculation capability requirement value of the task is greater than a predetermined threshold. If so, the task is sent to a shared image reconstruction apparatus, so that the shared image reconstruction apparatus performs the task. Otherwise, the task is sent to a local image reconstruction apparatus, so that the local image reconstruction apparatus performs the task. The techniques described herein facilitate a reduction in hardware cost required for image reconstruction in MRI.

Abstract: In a method for correcting the interference in respiratory navigation, transmitting, during magnetic resonance scanning, a respiratory signal generated by a radio frequency signal generator to a human body; acquiring, as a measured respiratory signal, a respiratory signal passing through the human body and acquired in a local coil, wherein the measured respiratory signal is constituted by a real respiratory signal and an interference signal; determining, according to a respiratory signal coil sensitivity of the real respiratory signal and an interference signal coil sensitivity of the interference signal, a signal relation that is satisfied by the real respiratory signal, the interference signal and the measured respiratory signal; and calculating the signal relation to obtain the real respiratory signal.

Abstract: The present disclosure is directed to image reconstruction techniques used in magnetic resonance imaging. The techniques disclosed include calculating, for each of image reconstruction tasks to be performed, a calculation capability requirement value of the task by a magnetic resonance system, and determining whether the calculation capability requirement value of the task is greater than a predetermined threshold. If so, the task is sent to a shared image reconstruction apparatus, so that the shared image reconstruction apparatus performs the task. Otherwise, the task is sent to a local image reconstruction apparatus, so that the local image reconstruction apparatus performs the task. The techniques described herein facilitate a reduction in hardware cost required for image reconstruction in MRI.

Abstract: In a magnetic resonance coil selection method and selection computer, a range parameter of a target region (ROI) to be detected is acquired, and a detection range parameter of each available coil is acquired. A coil having a detection range that overlaps with a range of the ROI is determined and then selected. The selected coil is then used in the operation of a magnetic resonance scanner to acquire magnetic resonance data. The SNR of the magnetic resonance scanner is thereby increased, so as to improve the imaging quality.

Abstract: Disclosed in embodiments of the present invention are a local coil for an MRI system and a method of use, and an MRI system. The local coil comprises: a storage module, for storing a coil file, the coil file comprising configuration attribute information of the local coil; an interface module, for communication with the outside; a control module, for reading the coil file from the storage module and sending the coil file to the outside via the interface module, or receiving the coil file from the outside and storing the coil file in the storage module.

Abstract: In a magnetic resonance coil selection method and selection computer, a range parameter of a target region (ROI) to be detected is acquired, and a detection range parameter of each available coil is acquired. A coil having a detection range that overlaps with a range of the ROI is determined and then selected. The selected coil is then used in the operation of a magnetic resonance scanner to acquire magnetic resonance data. The SNR of the magnetic resonance scanner is thereby increased, so as to improve the imaging quality.

Abstract: Disclosed in embodiments of the present invention are a local coil for an MRI system and a method of use, and an MRI system. The local coil comprises: a storage module, for storing a coil file, the coil file comprising configuration attribute information of the local coil; an interface module, for communication with the outside; a control module, for reading the coil file from the storage module and sending the coil file to the outside via the interface module, or receiving the coil file from the outside and storing the coil file in the storage module.

Abstract: A mode matrix processor of a magnetic resonance imaging system includes an input unit, an output unit, an operation unit, and a control unit, wherein the input unit is used for receiving a number of digital magnetic resonance signals; the operation unit is used for performing a linear combination operation on the plurality of digital magnetic resonance echo signals, to obtain at least one digital mode signal; the output unit is used for sending the at least one digital mode signal; and the control unit controls, according to the number of the digital magnetic resonance signals, the operation unit to perform the linear combination operation. The mode matrix processor of a magnetic resonance imaging system according to a specific embodiment of the present invention has desirable portability between different systems. The mode matrix processor of a magnetic resonance imaging system according to a specific embodiment of the present invention can improve the compatibility of coils between different systems.