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Construction method and application of three-dimensional MRI image denoising model based on Wasserstein generative adversarial network

A technology of network model and construction method, applied in image enhancement, image analysis, image coding, etc., can solve problems such as limited denoising performance

Active Publication Date: 2019-08-06
SICHUAN UNIV
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Problems solved by technology

However, so far, there are very few studies on deep learning in MRI image denoising, and only one article using a simple end-to-end CNN network model for MRI image processing (Jiang, D., Dou, W., Vosters, L., Xu, X., Sun, Y., Tan, T., 2018. Denoising of 3D magnetic resonance images with multichannel residual learning of convolutional neural network. Japanese Journal of Radiology, 1-9), due to the relatively simple network structure, its Limited denoising performance

Method used

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  • Construction method and application of three-dimensional MRI image denoising model based on Wasserstein generative adversarial network
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  • Construction method and application of three-dimensional MRI image denoising model based on Wasserstein generative adversarial network

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Embodiment 1

[0057] This embodiment is based on the construction method of the 3D MRI image denoising model of the Wasserstein generation confrontation network, such as figure 1 As shown, it includes the following steps:

[0058] (1) Construct a training set, using noisy 3D MRI image data and corresponding noise-free 3D MRI image data to construct a training set.

[0059] The data used in this embodiment comes from the IXI dataset: this dataset is a public dataset and can be downloaded from http: / / brain-development.org / ixi-dataset / . This data set comes from three different hospitals and brain images of different patients, including MRI images T1, T2, and PDW three MRI modal images; for the acquisition of noise images, clinical data (noise-free images) and computer simulation noise can be used to get a noisy image. Its simulation formula is as follows

[0060]

[0061] Among them, noise img Represents the synthesized noise image, level represents the noise level, noise 1 and noise ...

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Abstract

The invention discloses a construction method and application of a three-dimensional MRI image denoising model based on a Wasserstein generative adversarial network. According to the invention, a Wasserstein generative adversarial network is used as a basic model to process an MRI noise image; large-scale data is used for training, a model can automatically learn potential association between a noise image and a non-noise image from the data, confrontation loss, perception loss and MSE loss are introduced into construction of a training model loss function, and the constructed model has a gooddenoising effect on a three-dimensional MRI image.

Description

technical field [0001] The invention belongs to the technical field of MRI (nuclear magnetic resonance imaging) image processing, and relates to an MRI image denoising method, in particular to a construction method and application of a three-dimensional MRI image denoising model based on a Wassertein generative confrontation network. Background technique [0002] In the process of clinical diagnosis, every detail will affect the diagnosis results of doctors, which requires more researchers to invest time and energy in researching new imaging techniques and image processing methods. [0003] As a routine method of medical diagnosis and one of the most advanced imaging technologies in the medical imaging field, MRI has the advantages of no trauma to the human body, no radiation damage, and direct tomographic imaging in any direction. However, under the conditions of high-speed imaging and high-resolution imaging, problems such as eddy current distortion are prone to occur, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T9/00
CPCG06T9/001G06T9/002G06T2207/10088G06T2207/20081G06T2207/20084G06T5/70
Inventor 张意冉茂松周激流
Owner SICHUAN UNIV
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