Ejection fraction calibration method based on ultrasonic medical image and special equipment

Abstract

The invention relates to an ejection fraction calibration method based on an ultrasonic medical image and special equipment. A material with biological tissue equivalent characteristics is used for preparing a human body dynamic heart model; a high-precision laser displacement sensor is used for accurately measuring and giving displacement standard values along the left ventricle short-axis tangent plane direction and the left ventricle outer side position under different heart rate values; then, a measured value of the displacement of the position is measured and given by utilizing ultrasonic medical imaging equipment; the measured value is subtracted from a standard value of the displacement to obtain a corrected value; a comparison table of the heart rate value and the corrected value of the displacement is established; and then, the comparison table, the standard value of the heart transverse diameter length of the left ventricular diastolic state of the human body dynamic heart model and the measured value are built in the ultrasonic medical imaging equipment and are used for calibrating an ejection fraction measurement result. According to the calibration method and the special equipment in the invention, the accuracy of the ejection fraction measurement result of the ultrasonic medical imaging equipment can be improved; and the effectiveness of the diagnosis result of clinical diseases such as heart failure can be improved.

Description

technical field [0001] The invention relates to a medical image calibration method in the field of medical imaging, in particular to an ejection fraction calibration method and special equipment based on ultrasound medical images. Background technique [0002] At present, the prevention of cardiovascular diseases is divided into four levels: zero-level prevention is to avoid lifestyles that may cause cardiovascular diseases from the perspective of living habits and mental health; primary prevention is to correct the unhealthy lifestyle of those at risk of disease; Prevention is the general screening and treatment of cardiovascular disease-prone populations with high blood pressure, high blood sugar, and hyperlipidemia, so as to achieve early detection, early diagnosis, and early treatment; tertiary prevention is to carry out preventive drug treatment for cardiovascular diseases , medications such as quantitative aspirin. [0003] Among the above-mentioned four-level prevent...

AI Technical Summary

Problems solved by technology

The traditional M-Teich method requires the sampling line to be perpendicular to the wall endocardium of the measured target when acquiring images, and the repeatability and accuracy of the operation are low. Therefore, anatomical M-mode, full-body Azimuth M-type and other improved Teich methods, but the basic principle is to calculate the ejection fraction based on the displacement extracted from the image

[0006] No matter which M-Teich method is used for the measurement and calculation of ejection fraction, it has the following disadvantages: first, the choice of measurement location depends on the experience of doctors, and the repeatability is low; second, when measuring ejection fraction It may be affected by changes in the blood content of the myocardium itself, resulting in inaccurate measurement results; third, without special calibration technology, the accuracy of displacement measurement results cannot be evaluated and analyzed, and the accuracy and validity of ejection fraction calculation results cannot be evaluated. Evaluation

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