Water-fat separation method, device and equipment based on magnetic resonance image and storage medium

Abstract

The embodiment of the invention discloses a water-fat separation method, device and equipment based on a magnetic resonance image and a storage medium. The method comprises the following steps of obtaining each pixel point to be processed in a magnetic resonance image, respectively calculating a phase factor candidate solution of the pixel point, and respectively dividing each phase factor solution in the phase factor candidate solution into a first solution set and a second solution set; based on the phase factor solutions in the first solution set and the second solution set, determining a water lipid conversion area, and calculating a target phase factor solution of each pixel point to be processed in the water lipid conversion area; determining a target phase factor solution of each ofthe rest to-be-processed pixel points based on the water-fat conversion region and the target phase factor solution in the water-fat conversion region; and extracting a water map and a fat map in themagnetic resonance image according to the target phase factor solution of each pixel point to be processed in the magnetic resonance image. According to the technical scheme provided by the embodiment of the invention, the field diagram can be rapidly and stably estimated, and the correct estimation of water and fat components is completed on the basis.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image processing, and in particular to a method, device, equipment, and storage medium for separating water and fat based on magnetic resonance images. Background technique [0002] In conventional magnetic resonance images, the highlighted fat signal will affect the diagnosis of lesions, so fat suppression technology is often required. However, there are various problems in the existing methods: the methods of fat saturation and water excitation will fail in the place where the field displacement is large; the method of inversion recovery will greatly reduce the signal-to-noise ratio of the image. In addition, fat signal is also an important diagnostic basis in the detection of heart and lung diseases. Therefore, accurate fat quantification and water-fat separation are crucial. [0003] At present, the chemical shift coding imaging method is the most used in the separation of wate...

AI Technical Summary

Problems solved by technology

However, there are various problems in the existing methods: the method of fat saturation and water excitation will fail in the place where the field displacement is large; the method of inversion recovery will greatly reduce the signal-to-noise ratio of the image

But this method needs to accurately estimate the displacement of the main magnetic field B0

[0004]The existing water-fat separation method is prone to the phenomenon of water-fat separation when the object space is discontinuous or the area with low signal-to-noise ratio is processed

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