Device for adjusting Doppler ultrasound blood flow gain
A technology of Doppler ultrasound and gain adjustment, which is applied to blood flow measurement devices, ultrasound/sonic/infrasonic diagnosis, and sound wave diagnosis. Effects of detection accuracy, avoidance of signal oversaturation overflow and noise interference
Pending Publication Date: 2018-08-21
苏州掌声医疗科技有限公司
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Problems solved by technology
[0006] In order to solve the above-mentioned technical problems, the present invention provides a Doppler ultrasonic blood flow gain adjustment device, which can effectively avoid blood flow signal oversaturation overflow and noise interference by automatically adjusting the gain, and solve the problem that the color Doppler ultrasound needs to adjust the color gain to improve Signal detection sensitivity of blood flow, and manually adjusting the gain is not only time-consuming, slow, but also poor in accuracy
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[0022] combine figure 1 , figure 2 , the invention discloses a device for adjusting Doppler ultrasonic blood flow gain, comprising:
[0023] A demodulator; the demodulator forms ultrasonic blood flow data after orthogonal demodulation of the beam-synthesized signal;
[0024] a wall filter; the wall filter is connected to the demodulator, and is used to remove low-speed moving tissue signals and motion artifact signals caused by probe movement;
[0025] An autocorrelation processing module; the autocorrelation processing module is connected to the wall filter, and is used to calculate the blood flow velocity and blood flow energy information according to the information processed by the wall filter;
[0026] B-mode image processing module; the B-mode image processing module processes B-mode image information; the B-mode image processing module is connected to the blood flow detection module to provide the envelope data of the B-mode image of the blood flow detection module; ...
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The invention discloses a device for adjusting Doppler ultrasound blood flow gain. The device comprises a demodulator, a wall filter, an autocorrelation processing module, a B-mode image processing module, a blood flow detecting module and an automatic gain module. The automatic gain module is connected to the blood flow detecting module, and is used for automatically adjusting a gain of a signaltransmitted by the blood flow detecting module; the automatic gain module includes a signal gain unit, a data storage unit, a threshold preset unit, and a threshold value determination unit. The invention can automatically adjust the gain, reduce labors and time consumption; since the operation is started from the low gain and less overflow state, the signal over-saturation overflow and the noiseinterference are effectively avoided, thereby improving the detection accuracy while ensuring the blood flow sensitivity.
Description
technical field [0001] The invention relates to the field of ultrasonic medical detection, in particular to a device for adjusting Doppler ultrasonic blood flow gain. Background technique [0002] As a non-invasive, real-time and cost-effective routine detection method, ultrasonic diagnosis has become an essential detection method in hospital departments and even community clinics. The technology of blood flow imaging using the Doppler principle has further improved the scope and importance of ultrasonic diagnosis. Color Doppler ultrasound generally uses autocorrelation technology to process and obtain blood flow signals, which are superimposed on the two-dimensional image in real time after color coding to form a color Doppler ultrasound blood flow image. Therefore, it not only has the advantages of two-dimensional ultrasonic structural images, but also provides rich information of hemodynamics. It is widely used in the diagnosis of heart, blood vessels, blood flow and fet...
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Login to View More IPC IPC(8): A61B8/06
CPCA61B8/06A61B8/488A61B8/5223
Inventor 吴哲王权泳
Owner 苏州掌声医疗科技有限公司