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Method and device for automatically optimizing Doppler ultrasonic imaging

A Doppler ultrasound, automatic optimization technology, applied in the field of Doppler imaging

Active Publication Date: 2010-11-10
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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Problems solved by technology

Although this method may cause changes in the dynamic range during the optimization process, it does not directly optimize the gain and dynamic range parameters.

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  • Method and device for automatically optimizing Doppler ultrasonic imaging
  • Method and device for automatically optimizing Doppler ultrasonic imaging
  • Method and device for automatically optimizing Doppler ultrasonic imaging

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Embodiment Construction

[0026] figure 1 A simplified structure diagram for optimizing the gain and dynamic range of the Doppler ultrasound imaging system applied in the embodiment of the present invention. The ultrasonic echo signal is formed into a radio frequency echo signal after beamforming, and then enters the Doppler processing link to estimate the frequency spectrum or power spectrum of the Doppler signal, and detect the spectrum envelope. Then enter the spectrum compression link to compress the spectral line data to improve the output range of the signal. Before the Doppler is displayed, an optimization judgment is required. In the optimization judgment step, the user can adjust the button or switch to control the judgment, or it can be set to the system to perform automatic judgment according to a certain characteristic parameter. If the result of the judgment is that parameter optimization is not performed, the system uses the pre-set or user-selected gain and dynamic range parameters to p...

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Abstract

The invention claims a method and a device for automatically optimizing Doppler ultrasonic imaging, a method and a device for automatically optimizing dynamic range parameters in Doppler ultrasonic imaging, and a method for automatically optimizing gain parameters in Doppler ultrasonic imaging. The methods mainly comprise the following steps of: collecting Doppler spectral line data during a period of time in real time; estimating the average noise level contained in the Doppler spectral line data and calculating the noise characteristic quantity according to the average noise level; extracting signal characteristic quantity from the Doppler spectral line data and calculating the actual dynamic range of the signal according to the noise characteristic quantity and the signal characteristic quantity; regulating the dynamic range parameter of the system and confining the dynamic range parameter within arange relevant to the actual dynamic range of the signal; and searching reference gain to regulate the gain parameter of the system. The method and device in the embodiment can improve the imaging effect of the Doppler frequency spectrum in real time to obtain the frequency spectrum display output comprehensively balanced in the aspects of information content, stereovision, luminance, noise content, saturation degree, and the like.

Description

technical field [0001] The invention relates to Doppler imaging technology in an ultrasonic diagnosis system, in particular to an automatic optimization method and device for dynamic range and gain in Doppler imaging. Background technique [0002] In the process of Spectral Doppler Imaging (Spectral Doppler Imaging) of the medical ultrasound imaging system, the ultrasonic front end transmits ultrasonic signals into the target tissue of the human body, detects its Doppler Frequency Shift (Doppler Frequency Shift) information, and obtains its spectrum or power in real time The spectrum is displayed on the screen after a specific grayscale transformation, which is the Doppler spectrum, which contains information related to the movement of human tissue or the velocity of blood flow. In the process of grayscale transformation, there are two important image parameters: Gain and Dynamic Range (DR), whose values ​​affect the sense of spectral layering, spectral brightness, effective...

Claims

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Application Information

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IPC IPC(8): A61B8/06A61B8/08
Inventor 李双双李雷
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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