Diagnosis of left ventricular hypertrophy using convolutional neural network
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(2020) 20:243
RESEARCH ARTICLE
Open Access
Diagnosis of left ventricular hypertrophy using convolutional neural network Zini Jian1, Xianpei Wang1* , Jingzhe Zhang1, Xinyu Wang2 and Youbin Deng2
Abstract Background: Clinically, doctors obtain the left ventricular posterior wall thickness (LVPWT) mainly by observing ultrasonic echocardiographic video stream to capture a single frame of images with diagnostic significance, and then mark two key points on both sides of the posterior wall of the left ventricle with their own experience for computer measurement. In the actual measurement, the doctor’s selection point is subjective, and difficult to accurately locate the edge, which will bring errors to the measurement results. Methods: In this paper, a convolutional neural network model of left ventricular posterior wall positioning was built under the TensorFlow framework, and the target region images were obtained after the positioning results were processed by non-local mean filtering and opening operation. Then the edge detection algorithm based on threshold segmentation is used. After the contour was extracted by adjusting the segmentation threshold through prior analysis and the OTSU algorithm, the design algorithm completed the computer selection point measurement of the thickness of the posterior wall of the left ventricle. Results: The proposed method can effectively extract the left ventricular posterior wall contour and measure its thickness. The experimental results show that the relative error between the measurement result and the hospital measurement value is less than 15%, which is less than 20% of the acceptable repeatability error in clinical practice. Conclusions: Therefore, the measurement method proposed in this paper has the advantages of less manual intervention, and the processing method is reasonable and has practical value. Keywords: Echocardiography, Deep learning, Diagnosis of left ventricular hypertrophy, Convolutional neural network
Background Left ventricular hypertrophy (LVH) is in the heart of the left ventricular myocardial morphology changes, increase in number, resulting in left ventricular wall thickening [1]. Left Ventricular Posterior Wall Thickness (LVPWT) will be significantly thickened in patients with LVH [2]. LVH is generally considered to be potentially associated with heart failure, arrhythmia and other diseases [3]. Left ventricular hypertrophy is considered as a reliable index in the diagnosis of organic heart disease, and it is of * Correspondence: [email protected] 1 Electronic Information School, Wuhan University, Wuhan, P.R. China Full list of author information is available at the end of the article
great significance to evaluate the disease development and prognosis. Therefore, early and accurate diagnosis of the disease can provide reliable reference for follow-up treatment and reduce the probability of risk events. The screening basis of left ventricular hypertrophy in modern medicine is based on electrocardiogram and echocardiography. Sometimes accurate measu
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