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Multi-parameter MRI image fusion method and device of U-net network

A fusion method and multi-parameter technology, which is applied in the field of multi-parameter MRI image fusion, can solve the problems of missed detection and false detection, manual switching of images is cumbersome, etc., to reduce false detection rate, improve clarity and contrast, and avoid energy loss Effect

Pending Publication Date: 2022-03-29
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the doctor needs to switch between the T2W image and the ADC image, it is cumbersome to manually switch the image, and when observing images with multiple parameters at the same time, it is necessary to compare the corresponding areas of the T2W image and the ADC image one by one, which is likely to cause missed detection and false detection

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  • Multi-parameter MRI image fusion method and device of U-net network
  • Multi-parameter MRI image fusion method and device of U-net network
  • Multi-parameter MRI image fusion method and device of U-net network

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Embodiment 1

[0060] like figure 1 As shown, the fusion method of the multi-parameter MRI image of a kind of U-net network that the embodiment of the present invention provides, comprises:

[0061] S11, acquiring an MRI image pair of the prostate;

[0062] Wherein, the image pair includes an ADC image and a T2W image.

[0063] It can be understood that the MRI image pair is composed of an ADC image of the prostate and a T2W image of the prostate of the same person, so that the image after image fusion is an image of the prostate of the person.

[0064] S12, combining the ADC image and the T2W image to obtain a combined image;

[0065] It can be understood that after the ADC image and the T2W image are merged, the ADC image and the T2W image are merged into a dual-channel image, which provides an input image for subsequent entry into U-net.

[0066] S13, inputting the merged image into the trained U-net network, and obtaining a weighted image output by the U-net network with the same size...

Embodiment 2

[0078] As an optional embodiment of the present invention, the above step of S14 includes:

[0079] Step 1: Laplacian pyramid decomposition is performed on the ADC image and the T2W image respectively;

[0080] Step 2: Decompose the weighted image into a Gaussian pyramid.

Embodiment 3

[0082] As an optional embodiment of the present invention, the above step of S15 includes:

[0083] Step 1: For each pixel of the decomposed ADC image, calculate the sum of the squares of the pixel values ​​in a preset window centered on the pixel to obtain the first local energy of the decomposed ADC image;

[0084] Step 2: For each pixel in the decomposed T2W image, calculate the sum of squares of the pixel values ​​in a preset window centered on the pixel to obtain the second local energy of the decomposed T2W image.

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Abstract

The embodiment of the invention provides a fusion method and device for multi-parameter MRI images of a U-net network, and the method comprises the steps: inputting an MRI image pair of prostatic cancer into the U-net network, enabling the U-net network to output a weighted image generated based on pixel information, enabling a pixel value in the weighted image to represent a weight value of the weighted image in a T2W image or an ADC image, and enabling the weighted image to be subjected to image fusion. Then, the T2W image and the ADC image are fused through the weighted image, generation of artifacts or energy loss in the fusion process is avoided, the fused image is provided for a doctor, the working efficiency of the doctor can be improved, the false drop rate is reduced, meanwhile, the definition and contrast of the fused image in the prostate area are improved, and the prostate accuracy is improved. And the overall image visual perception of the fused image is improved.

Description

technical field [0001] The invention belongs to the field of medical image fusion, and in particular relates to a fusion method and device for multi-parameter MRI images of a U-net network. Background technique [0002] Hospital images can effectively help doctors improve their work efficiency. Take the Prostate mpMRI Prostate Imaging Reporting and Data System (PI-RADS) scoring system established by the European Society of Urogenital Radiology (ESUR) as an example. The RAD system helps physicians make clinical decisions quickly, efficiently, and reliably, and can also improve the quantitative assessment of disease. MRI is the best imaging technique for visualizing the prostate, with excellent resolution and contrast between the prostate and surrounding structures as well as the anatomical area of ​​the gland. With the development of multiparametric MRI (mpMRI), MRI combines anatomical T2W with functional and physiological assessments, including diffusion-weighted imaging (D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/10088G06T2207/20016G06T2207/20081G06T2207/20084G06T2207/20221G06T2207/30081
Inventor 贾广黄旭楠李檀平谭丽娜苗启广赵博程
Owner XIDIAN UNIV