Signal processing method and device for intravoxel incoherent motion imaging and storage medium

Abstract

The invention discloses a signal processing method and device for intravoxel incoherent motion imaging and a storage medium. The method includes the steps of setting non-zero b value distribution, conducting IVIM dispersion imaging magnetic resonance scanning on each b value based on an MRI scanner, and outputting images corresponding to the b values, wherein the b values are related to the intensity of a diffusion imaging gradient magnetic field; conducting attenuation model fitting on each b value and a region of interest on the corresponding IVIM diffusion imaging image, and outputting IVIMparameters representing the relationship between the b values and the intensity of imaging signals. In the method, the images of the non-zero b values are adopted for fitting, the fitting difficultyis reduced, the calculation result is more stable, the relationship between the intensity of the diffusion imaging gradient magnetic field and the image signals can be easily reflected, and extensiveuse in clinical medicine is facilitated.

Description

technical field [0001] The present invention relates to the technical field of magnetic resonance diffusion imaging and medical image processing, in particular to a signal processing method, device and storage medium for intra-voxel incoherent motion imaging. Background technique [0002] Intravoxel incoherent motion (IVIM) uses diffusion weighted magnetic resonance imaging to observe the movement speed of water molecules in organ tissues. The speed of movement of water molecules in living tissue includes fast moving water molecules in the vascular structure (perfusion) and generally slower moving water molecules in cells or interstitial spaces (diffusion), where the latter is caused by Brownian motion. The composition of IVIM imaging series generally consists of imaging without diffuse imaging gradient magnetic field (b=0s / mm 2 ) and a series of gradient magnetic field imaging with different intensities (or different durations) of diffusion imaging. The higher the gradien...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a signal processing method, device and storage for incoherent motion imaging within a voxel in view of the above-mentioned defects of the prior art The medium is designed to solve the problem of attenuation model fitting by using the image of b=0s / mm2 and the image when b is greater than 0 in the prior art when calculating the IVIM parameters, resulting in Difficulty in formula fitting, unstable measurement results, etc.

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