Phase correction method and device, computer equipment and storage medium
A phase correction, computer program technology, applied in medical science, using magnetic variable measurement, diagnosis, etc., can solve problems such as the effective application of unfavorable image reconstruction methods, the destruction of the true phase of the original echo, etc.
Pending Publication Date: 2022-05-06
SHANGHAI UNITED IMAGING HEALTHCARE
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[0004] However, the above phase correction method destroys the real phase of the original echo, which is not conducive to the effective application of image reconstruction methods based on phase information in the later stage
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[0058]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.
[0059] The phase correction method provided by this application can be applied to such as figure 1 In the shown computer equipment, the computer equipment can be a server, and the computer equipment can also be a terminal, and its internal structure diagram can be as follows figure 1 shown. The computer device includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus. Wherein, the processor of the computer device is used to provide calculation and control capabilities. The memory of the computer device includ...
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The invention relates to a phase correction method and device, computer equipment and a storage medium. The method comprises the following steps: pre-scanning a target object through magnetic resonance to obtain a plurality of echo data, determining reference echo data and to-be-corrected echo data according to the plurality of echo data, determining a correction phase difference according to the reference echo data and the to-be-corrected echo data, and then performing phase correction on the to-be-corrected echo data by using the correction phase difference to obtain the corrected echo data. And obtaining corrected echo data corresponding to the echo data to be corrected. According to the method, deviation correction is carried out based on the reference echo data, phase information between different channels and phase information between water and fat contained in the echo data are reserved, and therefore a reliable data basis is provided for reconstructing a magnetic resonance image based on the important phase information in the later period.
Description
technical field [0001] The present application relates to the technical field of medical image processing, in particular to a phase correction method, device, computer equipment and storage medium. Background technique [0002] In the magnetic resonance multi-echo technology, in order to ensure the data matching among the multi-echoes, echo phase correction is required. [0003] At present, there are many kinds of conventional echo phase correction methods. Among them, the phase correction of PROPELLER multi-echo is more commonly used. This method performs Fourier transform on the original data of each echo and the triangular filter data to obtain the original image and filter image, and retain the amplitude of the original image, and subtract the phase of the filtered image from the phase of the original image to obtain new image data, which is the image data corrected for each echo, and then transform the corrected image data Go to the K space for subsequent MRI image rec...
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IPC IPC(8): G01R33/54A61B5/055
CPCG01R33/54A61B5/055
Inventor 翟人宽
Owner SHANGHAI UNITED IMAGING HEALTHCARE