Abstract: A method of controlling an electronic apparatus for running at least one application is provided. The method includes obtaining feature data corresponding to a plurality of running applications, wherein the feature data comprises current system state data and running state data corresponding to the at least one application, identifying a target abnormal application based on the feature data corresponding to the plurality of the running applications, obtaining interactive data corresponding to a plurality of call actions of the target abnormal application within a preset duration, identifying a target abnormal call action based on the interactive data corresponding to the plurality of the call actions, and performing call restriction on the target abnormal call action based on monitoring the target abnormal call action.

Abstract: A magnetic resonance imaging (MRI) method is provided. The method includes: a first echo signal and a second echo signal generated from each of channels of a MRI device are acquired by performing a pre-scanning according to an imaging sequence; a correction displacement with which an imaging phase consistency is maximum is determined by shifting a signal curve of the second echo signal for each of the channels for a plurality of times; a one-order phase correction value and a zero-order phase correction value for the channels are determined under the imaging sequence according to the correction displacement; a formal scanning is performed according to the imaging sequence to obtain scanning data; and a phase correction is performed on the scanning data according to the one-order phase correction value and the zero-order phase correction value to obtain target scanning data for reconstructing an image.

Abstract: A magnetic resonance angiography method includes: in a plurality of first repeated collecting periods, a first echo signal set is formed by flow-compensated first echo signals and a second echo signal set is formed by flow-compensated second echo signals; in a plurality of second repeated collecting periods, a third echo signal set is formed by flow-compensated third echo signals and a fourth echo signal set is formed by flow-dephased fourth echo signals; a venous blood vessel image is reconstructed according to the second echo signal set; an arteriovenous blood vessel image is obtained according to the first echo signal set, the third echo signal set and the fourth echo signal set; and an arterial blood vessel image is obtained according to the venous blood vessel image and the arteriovenous blood vessel image.

Abstract: Methods and devices for magnetic resonance imaging are provided. In one aspect, a method of magnetic resonance imaging includes: for each scanning step in a scanning sequence for a subject, determining a longitudinal magnetization intensity of a characteristic tissue of the subject according to a current running condition of the scanning sequence, obtaining an inversion time corresponding to a characteristic tissue suppressing pulse to be generated according to the determined longitudinal magnetization intensity, generating the characteristic tissue suppression pulse, generating an imaging pulse sequence when the inversion time elapses after generating the characteristic tissue suppression pulse, and receiving an echo signal from the subject, the echo signal corresponding to the generated imaging pulse sequence. The method can also include reconstructing an image of the subject according to the received echo signals when the scanning sequence finishes the scanning steps.

Abstract: A magnetic resonance imaging (MRI) method is provided. The method includes: a first echo signal and a second echo signal generated from each of channels of a MRI device are acquired by performing a pre-scanning according to an imaging sequence; a correction displacement with which an imaging phase consistency is maximum is determined by shifting a signal curve of the second echo signal for each of the channels for a plurality of times; a one-order phase correction value and a zero-order phase correction value for the channels are determined under the imaging sequence according to the correction displacement; a formal scanning is performed according to the imaging sequence to obtain scanning data; and a phase correction is performed on the scanning data according to the one-order phase correction value and the zero-order phase correction value to obtain target scanning data for reconstructing an image.