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Neural network based planar echo imaging method and device

A technology of echo-planar imaging and neural network, which is applied in measuring devices, using nuclear magnetic resonance image system for measurement, magnetic resonance measurement, etc., can solve the problems of lack of stability of the main magnetic field, image deformation, and chemical shift artifacts in magnetic resonance images. Eliminate chemical shift artifacts and achieve good quality results

Active Publication Date: 2019-08-06
SHANGHAI NEUSOFT MEDICAL TECH LTD +1
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Problems solved by technology

[0004] However, due to the lack of stability of the main magnetic field of the MRI system, the eddy currents and chemical shifts caused by the rapid switching of positive and negative gradient magnetic fields in the EPI sequence, the magnetic resonance images obtained by using the EPI sequence are prone to problems such as chemical shift artifacts and image deformation.

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  • Neural network based planar echo imaging method and device
  • Neural network based planar echo imaging method and device
  • Neural network based planar echo imaging method and device

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[0025] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0026] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention provides a neural network based planar echo imaging method and device. The method comprises that according to a selected magnetic resonance parameter, a planar echo imaging sequence is used to scan a detected body, and k-space data is obtained; according to the k-space data, an initial magnetic resonance image of the detected body is obtained; and the initial magnetic resonance imageis input to pre-trained first and second neutral networks to obtain a final magnetic resonance image of the detected body. The first neural network is configured to eliminate a chemical displacementartifact, and the second neural network is configured to correct image deformation. Based on the neural network based planar echo imaging method and device, the chemical displacement artifact can be eliminated effectively while deformation can be corrected, and the quality of the magnetic resonance image obtained by reconstruction is higher.

Description

technical field [0001] The present application relates to the technical field of magnetic resonance imaging, and in particular to a method and device for echo-planar imaging based on a neural network. Background technique [0002] Magnetic resonance imaging (Magnetic Resonance Imaging, MRI), as a multi-parameter, multi-contrast imaging technology, is one of the main imaging methods in modern medical imaging. MRI can reflect various characteristics such as longitudinal relaxation time T1, transverse relaxation time T2 and proton density of tissues in the subject, thereby providing information for the detection and diagnosis of diseases. The basic working principle of the MRI system is to use the radio frequency transmitting coil to excite the hydrogen protons in the subject according to the magnetic resonance phenomenon, and use the gradient magnetic field for spatial encoding, and then use the radio frequency receiving coil to receive the electromagnetic signal with position...

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Application Information

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IPC IPC(8): G01R33/56G01R33/561
CPCG01R33/5608G01R33/561
Inventor 章星星蒋先旺陈名亮宋瑞波
Owner SHANGHAI NEUSOFT MEDICAL TECH LTD
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