Phase unwrapping method and device of magnetic resonance image and magnetic resonance imaging system
A magnetic resonance image and phase unwrapping technology, applied in the field of medical image processing, can solve the problems of low efficiency and achieve the effect of improving the efficiency of phase unwrapping
Pending Publication Date: 2020-06-12
SHANGHAI UNITED IMAGING HEALTHCARE
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[0005]
Based on this, it is necessary to provide a method, device, computer-readable storage medium and magnetic resonance imaging system for phase unwrapping of magnetic resonance images to solve the problem of low efficiency of phase unwrapping of magnetic resonance phase images in the related art
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[0025] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0026] This embodiment is preferably applied to medical image scanning equipment, such as Positron Emission Computed Tomography (PET for short) equipment, Magnetic Resonance Imaging (MRI for short) equipment and the like. In this embodiment, the application will be described and illustrated by taking the acquisition of magnetic resonance images by a magnetic resonance imaging device as an example.
[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in ...
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The invention relates to a magnetic resonance image phase unwrapping method and device, a computer readable storage medium and a magnetic resonance imaging system. The method comprises the steps thata first magnetic resonance phase diagram is acquired, and the first magnetic resonance phase diagram comprises a wrapping phase; inputting the first magnetic resonance phase diagram into a completelytrained artificial neural network model; obtaining a second magnetic resonance phase diagram output by the completely trained artificial neural network model, wherein the second magnetic resonance phase diagram comprises one of a third magnetic resonance phase diagram and a magnetic resonance phase correction offset diagram, the third magnetic resonance phase diagram is obtained after phase unwrapping is conducted on the wrapping phase in the first magnetic resonance phase diagram, and the magnetic resonance phase correction offset diagram is used for representing the phase offset between thefirst magnetic resonance phase diagram and the third magnetic resonance phase diagram. According to the method and the device, the problem of low phase unwrapping efficiency of the magnetic resonancephase diagram in the prior art is solved, and the phase unwrapping efficiency of the magnetic resonance phase diagram is improved.
Description
technical field [0001] The present application relates to the field of medical image processing, in particular to a phase unwrapping method and device for magnetic resonance images, a computer-readable storage medium and a magnetic resonance imaging system. Background technique [0002] The signal obtained by magnetic resonance imaging includes amplitude and phase, and the formed images are magnetic resonance amplitude map and magnetic resonance phase map respectively. Among them, the magnetic resonance phase map contains a lot of information, such as the moving speed of the spin nucleus, the inhomogeneity of the magnetic field and the change of the magnetic susceptibility, etc. [0003] However, when the real phase is extracted from the magnetic resonance signal, the phase value will be limited to the range of (-π,+π] radians, and the real phase outside this range will be wound into this range, thus forming phase winding, and the obtained The phase is called phase wrapping...
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Login to View More IPC IPC(8): G06T11/00G06N3/04G06N3/08G01R33/565G01R33/56
CPCG06T11/003G06N3/084G01R33/56545G01R33/56536G01R33/5608G06N3/045Y02A90/30
Inventor 史宇航刘柳
Owner SHANGHAI UNITED IMAGING HEALTHCARE