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- W3161394363 abstract "Cardiovascular disease (CVD) is the most common type of disease and has a high fatality rate in humans. Early diagnosis is critical for the prognosis of CVD. Before using myocardial tissue strain, strain rate, and other indicators to evaluate and analyze cardiac function, accurate segmentation of the left ventricle (LV) endocardium is vital for ensuring the accuracy of subsequent diagnosis. For accurate segmentation of the LV endocardium, this paper proposes the extraction of the LV region features based on the YOLOv3 model to locate the positions of the apex and bottom of the LV, as well as that of the LV region; thereafter, the subimages of the LV can be obtained, and based on the Markov random field (MRF) model, preliminary identification and binarization of the myocardium of the LV subimages can be realized. Finally, under the constraints of the three aforementioned positions of the LV, precise segmentation and extraction of the LV endocardium can be achieved using nonlinear least-squares curve fitting and edge approximation. The experiments show that the proposed segmentation evaluation indices of the method, including computation speed (fps), Dice, mean absolute distance (MAD), and Hausdorff distance (HD), can reach 2.1–2.25 fps, <math xmlns=http://www.w3.org/1998/Math/MathML id=M1> <mn>93.57</mn> <mo>±</mo> <mn>1.97</mn> <mi>%</mi> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M2> <mn>2.57</mn> <mo>±</mo> <mn>0.89</mn> </math> mm, and <math xmlns=http://www.w3.org/1998/Math/MathML id=M3> <mn>6.68</mn> <mo>±</mo> <mn>1.78</mn> </math> mm, respectively. This indicates that the suggested method has better segmentation accuracy and robustness than existing techniques." @default.
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- W3161394363 date "2021-05-16" @default.
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- W3161394363 title "Automatic Segmentation of Left Ventricle in Echocardiography Based on YOLOv3 Model to Achieve Constraint and Positioning" @default.
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- W3161394363 doi "https://doi.org/10.1155/2021/3772129" @default.
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