Ultrasonic blood testing method and device

Abstract

The invention discloses an ultrasonic blood detection method and device. The method comprises: adopting a high-frequency miniature linear array transducer with functions of beam deflection emission and beam synthesis emission to transmit ultrasonic waves and receive ultrasonic echo signals; The ultrasonic echo signal calculates the red blood cells in the blood of the test subject as the average spacing of the scattering elements, and compares it with the normal blood flow to evaluate the concentration of red blood cells in the blood of the test subject. The present invention utilizes the characteristics of deflection and emission of linear array transducers to realize accurate and effective measurement of blood flow velocity (macroscopic characteristics), utilizes the characteristics of beam forming of linear array transducers to improve the signal-to-noise ratio of echo signals, and utilizes high-frequency ultrasonic spatial resolution High characteristics realize the characterization (microscopic characteristics) of the average distance between red blood cells in blood, so as to deduce the change of blood concentration; two characteristics of flowing blood can be obtained at the same time: flow velocity and concentration, which provides more information for blood evaluation.

Description

technical field [0001] The invention relates to the technical field of medical lesion detection and auxiliary diagnosis, in particular to an ultrasonic blood detection method and device. Background technique [0002] Color Doppler ultrasound technology has been clinically applicable to the diagnosis of cardiovascular diseases, inflammatory lesions of body surface organs and gynecological diseases [1]. Doppler ultrasound can reflect different flow velocities and different states of blood flow, including laminar flow, eddy current, and turbulent flow, and has the advantages of non-invasive, non-radiative, fast, and cheap. [2] [0003] However, some diseases will cause the imbalance of red blood cells in the blood, resulting in a decrease or increase in the number of red blood cells, resulting in anemia or polycythemia, such as leukemia, hemolytic anemia, early thrombosis, etc. [3,4] The diagnosis of these diseases is often difficult to diagnose by detecting changes in blood ...

AI Technical Summary

Problems solved by technology

[0004] The current in vitro blood detection device mainly has the following disadvantages: first: the method of destructive detection is often used, and the blood of the patient needs to be extracted to detect, which increases the pain of the patient and requires professional operation

Second, most of the existing testing instruments are professional testing equipment, which is inconvenient for daily use by patients

However, no researchers have used this method to evaluate blood conditions. There are several reasons: First, the signal-to-noise ratio of echo signals is too low, resulting in inaccurate calculations.

Second, the red blood cells in the flowing blood are randomly distributed and in a state of motion, resulting in unstable calculation results

Therefore, no researchers have used the method of the average spacing of scattering elements to evaluate the number or concentration of red blood cells in blood

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