Self-adapting time gain compensation controller of B ultrasonic system

Abstract

The invention discloses a self-adapting time-gain-compensation controller of a B-mode ultrasonic scanner system. The self-adapting time-gain-compensation controller comprises a first rom memory and a second rom memory, as well as an either-or selector, wherein, a first time-gain-compensation controlling curve data is stored in the first rom memory and a second time-gain-compensation controlling curve data is stored in the second rom memory; the first rom memory and the second rom memory are respectively connected to the input end of the either-or selector; the either-or selector takes input probe frequencies as selective controlling signals to output the first time-gain-compensation controlling curve data or the second time-gain-compensation controlling curve data according to different probe frequencies. The self-adapting time-gain-compensation controller of the B-mode ultrasonic scanner system sets a plurality of time-gain-compensation controlling curves according to attenuation curves corresponding to the different probe frequencies, and selects the corresponding time-gain-compensation controlling curves according to the different probe frequencies, thereby greatly improving the effect of time gain compensation.

Description

technical field [0001] The invention relates to the technical field of ultrasonic imaging equipment, in particular to an adaptive time gain compensation controller for a B-ultrasound system. Background technique [0002] The basic principle of ultrasonic imaging is to irradiate human organs with ultrasound, and use one or more of the emission, refraction, attenuation, frequency shift or change of sound velocity produced by the organs to the incident ultrasound to form the sonogram of the organs. The doctor is Lesions were observed on this sonogram. [0003] When ultrasonic waves propagate in the human body, energy attenuation will inevitably occur. Experimental research has confirmed that the deeper the depth, the greater the attenuation, and the higher the probe frequency, the greater the attenuation. According to medical literature, the amount of attenuation increases with the square of the frequency, which is basically linear with the transmission distance. For example:...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a B-ultrasound system adaptive time gain compensation controller, which overcomes the defect that the B-ultrasound system in the prior art cannot adjust the corresponding time gain compensation control curve according to the difference in probe frequency

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