Echocardiographic ventricle segmentation method and device based on deep learning and deformation model

A technology of echocardiography and deformation models, which is applied in the field of medical image processing, can solve the problems of large manpower, material resources, and negative effects on the calculation of related indicators of the ventricle, and achieve the effect of saving working time

Active Publication Date: 2018-06-01
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the disadvantages that the existing manual calibration boundary method usually consumes a lot of manpower and material resources, and the calibration results of different peopl

Method used

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  • Echocardiographic ventricle segmentation method and device based on deep learning and deformation model
  • Echocardiographic ventricle segmentation method and device based on deep learning and deformation model
  • Echocardiographic ventricle segmentation method and device based on deep learning and deformation model

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specific Embodiment approach 1

[0034] Specific Embodiment 1: The echocardiographic ventricle segmentation method based on deep learning and deformation model of this embodiment, such as figure 1 shown, including the following steps:

[0035] Step 1: Obtain hypercardiographic data.

[0036] Step 2. Manually mark the endocardium of the ventricles in the hypercardiogram data.

[0037] Step 3: Preprocessing the images marked with the endocardium of the ventricle as training data.

[0038] Step 4: Using the training data to train the rough segmentation model of the ventricle, and obtain the rough segmentation training result.

[0039] Step 5. Calculate the center point of the rough segmentation training result in each section, fit a straight line according to all the center points, and calculate the distance between all the center points and the outer edge of the rough segmentation training result in the direction perpendicular to the straight line Average value as radius.

[0040] Step 6: Perform resampling...

Embodiment approach

[0044] 1. Clinical acquisition of echocardiographic data

[0045] figure 2 is the echocardiographic short-axis tangential basal image of the ventricle, image 3 is the echocardiographic short-axis tangential mid-portion image of the ventricle, Figure 4 is the echocardiographic ventricular short-axis tangential apical image, Figure 5 is the echocardiographic long-axis "four-chamber heart" slice image, Figure 6 is the echocardiographic long-axis "two-chamber heart" slice image, Figure 7 It's a three-dimensional echocardiogram. according to figure 2 As shown in , 3, 4, 5, 6 or 7, two-dimensional data or three-dimensional echocardiographic data of each measured person is clinically collected. In order to train a more accurate coarse segmentation model, the number of samples of the tested personnel should be kept above 500 as much as possible. Different tangential data are used as input to provide the heart information of the person being tested, so as to achieve a mor...

specific Embodiment approach 2

[0066] Embodiment 2: This embodiment differs from Embodiment 1 in that: the echocardiographic data is two-dimensional, multi-phase and multi-directional echocardiographic slice data or three-dimensional echocardiographic data acquired through ultrasonic equipment.

[0067] Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention relates to an echocardiographic ventricle segmentation method and device based on deep learning and a deformation model, and aims at ironing out a defect that a conventional manual boundary marking method exerts a big negative impact on the calculation of the related indexes of a ventricle because the conventional manual boundary marking method usually consumes a large amount of manpower and material resources and the marking results of different persons are different. The method comprises the steps: carrying out the training of a ventricle coarse segmentation model through manually marked training data, and obtaining a coarse segmentation training result; calculating the central point of the coarse segmentation training result on each section, carrying out the fitting of oneline through all central points, and calculating the mean value of the distances between the central points in a direction perpendicular to the line and an outer edge of the coarse segmentation training result as the radius; carrying out the resampling according to the calculated central points and the radius, and reconstructing a three-dimensional initialization model based on a sampling result;and carrying out the fine segmentation of the ventricle coarse segmentation result through the deformation model. The method is suitable for the ventricle image processing.

Description

technical field [0001] The invention relates to the field of medical image processing, in particular to a method and device for segmenting the ventricle of an echocardiogram based on deep learning and a deformation model. Background technique [0002] Medical image segmentation, as an important field in the field of medical image processing, is the basis of computer-aided diagnosis and treatment, and is dedicated to efficiently and accurately segmenting organs of interest in medical images. At present, in the field of ventricular segmentation, it mainly relies on manual calibration of the boundaries of the ventricles, and then calculates related indicators of the ventricles based on the calibration results: volume, mass, end-systolic blood volume, end-diastolic blood volume, and ejection fraction of the left and right ventricles. However, such a method of manual boundary calibration usually consumes a lot of manpower and material resources, and the calibration results of dif...

Claims

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Application Information

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IPC IPC(8): G06T7/11G06T17/00G06N3/04
CPCG06T7/11G06T17/00G06N3/045
Inventor 王宽全董素宇骆功宁袁永峰张恒贵
Owner HARBIN INST OF TECH
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