Method, device and system for positioning assistance

Abstract

Embodiments of the present invention relate to a method, device and system for positioning assistance, wherein the method includes: continuously collecting ultrasonic Doppler waveforms, determining the envelope of each cardiac cycle according to the waveforms; collecting the three-axis angles of the angle sensor; Superimpose the envelope of the cardiac cycle to identify the best waveform; record the three-axis angle corresponding to the best waveform; locate the detection device according to the three-axis angle of the angle sensor and the three-axis angle corresponding to the best waveform; so that when the measurement starts , keep the position of the detection device basically fixed, and only change the angle in different directions; through the use of angular velocity sensors combined with the intelligent identification and guidance of the optimal cardiac cycle spectrum envelope, to achieve auxiliary ultrasound probe positioning and obtain more accurate measurement results.

Description

Technical field [0001] The present invention relates to the field of medical detection, and more particularly to a method, apparatus, and system for positioning assistance. Background technique [0002] In recent years, ultrasound Doppler technology in ultrasound medical imaging technology has become more and more rapid, and since the technology can detect blood flow conditions in human vascular without damage, thereby providing a basis for the diagnosis of blood circulation systems and vascular diseases. Therefore, there is a wide range of applications in medical clinics. [0003] The detection of blood flow velocity was performed using ultrasonic Doppler blood flow detection techniques, which was accomplished by the calculation of Doppler frequency shift of red blood cells in the blood. A large number of studies have shown that the change of blood flow velocity (corresponding to the maximum frequency curve of Doppler signal), and the relevant parameters on the Doppler sound spe...

AI Technical Summary

Problems solved by technology

However, the angle at which the ultrasonic Doppler probe detects the human body has a great influence on the measured blood flow waveform, and only experienced physicians can find the best position; , 1) It is impossible to reasonably judge whether the measurement waveform is accurate; and the measurement results cannot be repeated; 2) During the measurement process, due to operational problems, the best position is missed, but it cannot be restored to the best position; 3) The accuracy is low , and it is more difficult to operate

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