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MRI/CT fusion method based on bending wave

A fusion method and bending wave technology, applied in image enhancement, image analysis, instruments, etc., can solve the problems of ineffective information fusion and inability to extract medical image structure information well, so as to achieve good capture of image curves and short time , good effect

Active Publication Date: 2020-12-29
ZHEJIANG HOSPITAL
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Problems solved by technology

[0008] In the prior art, many classic multi-scale transformation methods have played an important role in image fusion, but these fusion methods used in ordinary natural images often cannot extract useful structural information of medical images, which leads to medical image fusion. The useful information cannot be well integrated into the final generated image during image fusion

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  • MRI/CT fusion method based on bending wave
  • MRI/CT fusion method based on bending wave
  • MRI/CT fusion method based on bending wave

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with the accompanying drawings.

[0060] The fusion algorithm of medical MRI / CT images based on bending wave transform (bentlet transform), the steps are as follows:

[0061] Step 1) Construct a PET / CT image model.

[0062] We assume that the PET / CT image is composed of the real part of the image and the multiplicative noise of the image. Usually, in order to compress the image signal, the generated medical image will be logarithmically transformed, and the original multiplicative noise will become additive noise. The final MRI image The model is as follows:

[0063] m(u,v)=i(u,v)+z(u,v) (1)

[0064] The model of the CT image is as follows:

[0065] c(u,v)=i(u,v)+z(u,v) (2)

[0066] Where (u, v) represents the coordinate values ​​of the MRI image and CT image, i(u, v) represents the real signal, and z(u, v) represents the additive noise.

[0067] Step 2) Construct the bending wave system.

[0068...

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Abstract

The medical MRI / CT image fusion method based on bending wave transformation includes the following steps: Step 1) Construct a PET / CT image model; Step 2) Construct a bending wave system; Step 3) Perform bending wave transformation on the MRI image and CT image; Step 4) Fusion of the bending wave coefficients of the MRI image obtained in step 3) and the bending wave coefficients of the CT image; Step 5) Perform inverse bending wave transformation on the bending wave coefficients obtained after the fusion of the bending wave coefficients of the two images. The present invention is compared with the image fusion method based on ordinary weighted average through experimental analysis, and is effectively applied in the field of medical MRI / CT image fusion; bending wave transformation is a novel transform domain method, and its theoretical support is provided by second-order shearing. Developed from the shear wave transform, there is an additional bending variable in its function parameters. The bending wave basis function can better fit and capture the curve information in the image. Through the comparison of experimental data, a medical MRI / CT image fusion algorithm based on bending wave transform is proposed, which can better assist doctors in analysis and diagnosis.

Description

technical field [0001] The invention relates to a medical MRI / CT fusion method. Background technique [0002] With the development of science and technology, in the field of medical imaging, imaging technologies such as ultrasound imaging, CT, and MRI have been applied in medical clinical diagnosis. Because MRI and CT have two different imaging principles combined in the same machine, it is not a simple addition of their functions. Instead, image fusion is performed on this basis. The fused image has both fine anatomical structure and rich physiological and biochemical function information, which can provide a basis for quantitative and qualitative diagnosis of the precise location of tumors and other lesions. X-rays can be used to perform attenuation correction on nuclear medicine images. [0003] Computed Tomography (Computed Tomography) uses precisely collimated X-ray beams, γ-rays, ultrasonic waves, etc., together with highly sensitive detectors, to conduct cross-secti...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50G06T5/00
CPCG06T5/50G06T2207/10081G06T2207/10088G06T2207/20064G06T2207/30004G06T5/70
Inventor 程芸吕金城周海林陈坚张聚
Owner ZHEJIANG HOSPITAL
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