Fatty liver detecting system based on ultrasonic attenuation coefficient

Abstract

The invention relates to a fatty liver detecting system based on an ultrasonic attenuation coefficient, and belongs to the technical field of signal processing and liver attenuation coefficients. Thefat contents of livers of patients with different degrees of fatty liver are measured, a lower computer acquires an ultrasonic echo signal and uploads the ultrasonic echo signal to an upper computer,gain of an original signal is removed at first, then the signal is subjected to band-pass filtering to remove interference noises, a filter signal is subjected to envelope detection by hilbert transform, then the detected signal is subjected to logarithm transformation, after data are obtained, the data are subjected to smoothing filtering and down-sampling, all continuous points are subjected tolinear fitting to solve straight slope, finally, an attenuation coefficient which corresponds to the data is solved, in the calculating process, the fat content in the liver is measured by calculatingthe attenuation degree of the ultrasonic echo signal in human body liver fat, and the fatty liver detecting system based on the ultrasonic attenuation coefficient can be used for measuring the attenuation coefficient of liver tissues and detecting the degree of fatty liver.

Description

technical field [0001] The invention relates to a fatty liver detection system based on an ultrasonic attenuation coefficient, and specifically relates to a system for detecting the fat attenuation coefficient by an ultrasonic method to judge the degree of liver fat. Background technique [0002] Fatty liver refers to the lesion of excessive fat accumulation in liver cells caused by various reasons. It is a common pathological change of the liver, rather than an independent disease. Fatty liver disease is seriously threatening the health of the Chinese people, becoming the second largest liver disease after viral hepatitis, the incidence rate is constantly increasing, and the age of onset is getting younger. Normal human liver tissue contains a small amount of fat, such as triglycerides, phospholipids, glycolipids, and cholesterol, and its weight is about 3% to 5% of the liver weight. If too much fat accumulates in the liver, it exceeds 5% of the liver weight. Or when more ...

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Problems solved by technology

[0003] In the past, the diagnosis of fatty liver had to rely on liver biopsy, which may be difficult for patients to accept due to the occurrence of complications.

Obvious fatty liver is not difficult to diagnose based on B-ultrasound examination, but the early and mid-term images are not very typical. Sometimes, although the light spots are relatively fine, there are no obvious vascular changes and far-field echo weakening. Easily affected by subjective factors, it is very difficult to diagnose

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