Magnetic resonance imaging method and equipment as well as phase information acquisition method and device

Abstract

The invention discloses a magnetic resonance imaging method and equipment, a phase information acquisition method and device, electronic equipment and a storage medium. The acquistion method is applied to a data processor of a magnetic resonance imaging (MRI) system; and the acquisition method comprises the following steps: specific to each coil channel of a radio frequency coil of MRI equipment,acquiring an MR signal, thus obtaining first sampled data, and constructing a space K according to the first sampled data; according to the first sampled data of each coil channel, determining an interpolation convolution kernel used for performing data complement on the space K; fitting undersampled data of the space K according to the interpolation convolution kernel, thus obtaining second sampled data; and according to the second sampled data, determining phase information of the MR signal excited every time. The acquisition method disclsoed by the invention can determine the phase information of the acquired MR signal on the basis of the acquired MR signal, a 180-degree returning and gathering pulse is not required to be applied to a detected object, then phase information is determined on the basis of an acquired navigation echo signal, and rate and accuracy degree are respectively greatly improved.

Description

technical field [0001] The invention relates to the technical field of medical imaging, in particular to a magnetic resonance imaging method and equipment, a phase information acquisition method and device, electronic equipment, and a storage medium. Background technique [0002] Magnetic resonance imaging (Magnetic Resonance Imaging, MRI) is one of the main imaging methods in modern medical imaging. Its basic working principle is to use the magnetic resonance phenomenon to excite the hydrogen protons in the object to be detected, and use the gradient field to encode the position. The receiving coil is used to receive the signal with position information, and finally the image information is reconstructed through Fourier transform. [0003] In order to reconstruct a high-resolution image, a common method is to use a multi-shot imaging technique. During the imaging process, it is necessary to obtain the phase information of the MR signal collected for each shot. In the prio...

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Problems solved by technology

The error of the phase information obtained according to the above method is relatively large, and the reconstructed image is more prone to artifacts, and the above method requires additional data collection, and the efficiency is low

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