Ultrasonic diagnostic device

Abstract

The invention relates to an ultrasonic diagnostic instrument which comprises a front-end device and a digital signal processing device. The front-end device comprises a front-end logical control module, a transmission module, a probe array processing module and a receiving module; wherein, the transmission module comprises a high-pressure regulating sub-module and a transmission driving sub-module; and the receiving module comprises an amplification sub-module and an analog / digital conversion sub-module. The ultrasonic diagnostic instrument is characterized in that the amplification sub-module comprises at least a two-stage time-gain controlling amplifier. By adopting the transmission module with adjustable power, the ultrasonic diagnostic instrument is applied to various human organisms, and the damage to a fetus is avoided; a multistage time-gain controlling amplifier is arranged in the receiving module, so the gain range is expanded, and the brightness of the near field pattern is reduced, so as to lead the near field pattern to be clearer.

Description

technical field [0001] The invention relates to an ultrasonic diagnostic instrument, in particular to an ultrasonic diagnostic instrument capable of flexibly changing transmission power and multi-stage gain amplification, so as to adapt to various human tissues, avoid harm to fetuses and make near-field images clearer. Background technique [0002] Ultrasonic diagnostic equipment has become the most commonly used diagnostic equipment in medical imaging systems. Ultrasonic waves can propagate in human tissue, and the attenuation is not very large. The propagation speed of sound waves in human tissue is about 1540 meters per second. Therefore, the ultrasonic wavelength used in medical ultrasonic imaging is between 0.15 mm and 1.5 mm. Ultrasonic scanning imaging can It provides real-time images, has its own unique features in human soft tissue detection and hemodynamic observation of cardiovascular organs, and has broad development prospects. Especially in recent years, ultras...

AI Technical Summary

Problems solved by technology

[0007] 1 There are multiple transmitting circuits corresponding to the number of probe array elements, and the power of each transmitting circuit is not adjustable, which cannot protect the fetus;

[0008] 2 The receiving module is only equipped with an adjustable gain control amplifier, and the variable gain range is small; this is very unfavorable to the echo signal processing in the near field, which will cause the image brightness in the near field to be too high, and the near field cannot be seen clearly image of

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