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- W2170443735 abstract "The heart disease is related to the alterations in the biological tissue of its muscles. The myocardium alterations have been analysed and evaluated on ultrasound images. The statistical parameters of the heart texture on the defined region of interest present information about the state of myocardium. There are hundreds of the texture parameters, which could be used to evaluate the heart tissue structure. The goal was to choose the most informative ones by applying the quantitative analysis technique. The Fisher statistics has been applied for hypothesis testing to define the most informative texture parameters. The quantitative analysis proved that the texture parameters of the myocardium tissue can be estimated significantly, when the sample size of ROI is not less than 900-1000 pixels. The sample cannot be enhanced by combining images on in the diastolic and systolic phases. To evaluate the state of the myocardium the following statistical parameters can be used on four chamber view images: the percentiles of order 0.01, 0.1, 0.5, grey level run length non-uniformity (in all directions: horizontally, vertically, 45(0), 135(0)), except a lateral wall of the left ventricle, the entropy of the two-dimensional probability distribution, the parameter of the two-dimensional probability distribution, which defines the mean distance between grey levels. On parasternal images the informative statistical parameters are: grey level run length non-uniformity (in all directions: horizontally, vertically, 45(0), 135(0)), grey level non-uniformity, the entropy of the two-dimensional probability distribution applied to the septum only." @default.
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- W2170443735 date "2005-01-01" @default.
- W2170443735 modified "2023-10-03" @default.
- W2170443735 title "Myocardium tissue analysis based on textures in ultrasound images." @default.
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