Intracranial hemorrhage detection algorithm applied to CT image based on CNN and NLSTM neural network

A CT image and neural network technology, applied in the field of intelligent medical image processing, can solve the problems of doctors relying heavily on professionalism and time-consuming CT image evaluation, and achieve the effect of a wide range of application scenarios.

Active Publication Date: 2020-11-13
JILIN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that current CT image evaluation of intracranial hemorrhage is time-consuming and highly dependent on th

Method used

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  • Intracranial hemorrhage detection algorithm applied to CT image based on CNN and NLSTM neural network
  • Intracranial hemorrhage detection algorithm applied to CT image based on CNN and NLSTM neural network
  • Intracranial hemorrhage detection algorithm applied to CT image based on CNN and NLSTM neural network

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specific Embodiment approach 1

[0045]Specific embodiment one: what this embodiment records is the intracranial hemorrhage detection algorithm that is applied to CT image based on CNN and NLSTM neural network, and described method is:

[0046] Step 1: Get the CT image value from the medical CT image in dicom format:

[0047] The image in dicom format should be converted into CT image value, the conversion formula is as follows:

[0048] image hu =pixel×Rescalelope+Rescaleintercept

[0049] Among them, image hu is the CT image value, also known as the hu value; pixel is the pixel value of the dicom image, Rescaleslope is the scaling intercept, and Rescaleintercept is the scaling slope, these two parameters are determined by the hardware manufacturer of the CT instrument, and can be obtained from medical CT images in dicom format get;

[0050] Step 2: Windowing operation

[0051] Since the range of hu values ​​is generally large, this leads to poor contrast, so windowing is required. Windowing mainly adj...

specific Embodiment approach 2

[0087] Embodiment 2: In Embodiment 1, the intracranial hemorrhage detection algorithm based on CNN and NLSTM neural network applied to CT images, in step 4, the data enhancement processing is one of Flip, Normalize or RandomCrop.

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Abstract

The invention discloses an intracranial hemorrhage detection algorithm applied to a CT image based on a CNN and an NLSTM neural network, and belongs to the field of intelligent medical image processing. A CNN neural network is used to extract picture features of the CT image. Before the CNN features are extracted, the CNN neural network is also trained, and the pre-trained CNN network used in themethod is ResNeXt. The extracted embeding of the image is combined with the sequence information of the patient to serve as the input of the NLSTM neural network, a loss back propagation network is calculated through a cross entropy loss function, and a network structure for testing is finally obtained. The mode of combining the CNN and the RNN neural network is very suitable for processing CT sequence images, and the CNN and the NLSM are novel intracranial hemorrhage detection and classification methods. The intracranial hemorrhage detection algorithm based on the combination of the CNN and the NLSTM is an accurate and efficient automatic hemorrhage detection and classification algorithm, has an extremely important value for clinic, and has a wide application scene.

Description

technical field [0001] The invention belongs to the field of intelligent medical image processing, and in particular relates to an intracranial hemorrhage detection algorithm applied to CT images based on CNN and NLSTM neural networks. Background technique [0002] Deep learning is one of the latest trends in machine learning and artificial intelligence research. It is also one of the most popular scientific research trends today. Deep learning methods have revolutionized computer vision and machine learning. In recent years, deep learning methods have received extensive attention in medical image processing. For some specific tasks, deep learning methods have been shown to match or exceed the performance of medical experts. [0003] Intracranial hemorrhage (ICH) refers to hemorrhage caused by rupture of blood vessels in the brain. As a result, brain cells that receive blood from blood vessels are destroyed, and at the same time, the surrounding nerve tissue is compressed...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06K9/62G06N3/04G06N3/08
CPCG06T7/0012G06N3/084G06N3/049G06T2207/10081G06T2207/20081G06T2207/20084G06T2207/30101G06V2201/03G06N3/045G06F18/241G06F18/214
Inventor 刘萍萍石立达朱俊杰陈儇刘鹏程周求湛金百鑫
Owner JILIN UNIV
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