Method and device for computing apodization curve in real time in medical ultrasonic diagnosis system

An ultrasonic diagnosis and real-time computing technology, applied in ultrasonic/acoustic/infrasonic diagnosis, acoustic diagnosis, infrasonic diagnosis, etc., can solve the problems of complex implementation, high implementation cost, and high resource consumption, and achieve simple implementation, low resource consumption, Effects that improve image quality

Inactive Publication Date: 2011-02-02
SHENZHEN LANDWIND IND
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Problems solved by technology

Some traditional methods store several groups of apodization curves at different depths and use them directly for beamforming. Generally, the amount of stored data is large and requires more storage space; in recent years, some methods for real-time calculation of apodization curves have appeared By pre-storing one or half symmetrical apodization curves, as well as different depths of apodization extraction starting point, step size, aperture value, etc., the apodization value of each channel is extracted at different depths according to the aperture value, extraction starting point, and step size. For the change of the scanning starting point and the deflection of the scanning line, it is necessary to use different methods to calculate the offset of the extraction starting point to compensate. This method is a contra

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  • Method and device for computing apodization curve in real time in medical ultrasonic diagnosis system
  • Method and device for computing apodization curve in real time in medical ultrasonic diagnosis system
  • Method and device for computing apodization curve in real time in medical ultrasonic diagnosis system

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[0023] Hereinafter, the present invention will be further described in detail based on the drawings and embodiments:

[0024] As shown in the figure: the apodization coefficient used for apodization weighting is calculated in real time through the following three steps: the first step is to calculate the depth of the receiving focus along the normal direction of the probe surface (indicated by the longitudinal direction here) as the apodization depth, The apodization interval is indexed from the apodization interval table according to the apodization depth; the second step is based on the distance between the array element coordinates and the focal point along the tangent direction of the probe surface (indicated by the transverse direction here) as the apodization distance, and then the apodization interval, The index conversion unit and other parameters are used together to calculate the apodization index; finally, the apodization index is used to index the apodization value of ...

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Abstract

The invention provides a method and a device for computing an apodization curve in real time in a medical ultrasonic diagnosis system, which are a method and a device for obtaining the apodization curve by a real-time table look-up method. The method and the device greatly save the space of a memory and can realize different apodization for scanning lines of different angles, so that the best apodization effect can be achieved for deflection scanning, T-shaped scanning and phased array imaging, and the ultrasonic imaging quality is improved.

Description

technical field [0001] The present invention provides a method and device for apodization in a medical ultrasonic diagnosis system, in particular to a method and a device for calculating an apodization curve in real time in a medical ultrasonic diagnosis system in a beam forming link of the medical ultrasonic diagnosis system. Background technique [0002] In the medical ultrasonic diagnostic system, the receiving apodization of the beamforming link is a key processing step for eliminating side lobes and improving image contrast resolution. The traditional processing method is to pre-store the apodization curve and read it from the memory during beamforming The corresponding apodization curves are subjected to apodization weighting processing to complete the beamforming. [0003] In the ultrasonic imaging system, the probe is controlled by the circuit to transmit and receive ultrasonic waves, and after analog amplification and sampling, it enters the delay value (calculate t...

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Application Information

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IPC IPC(8): A61B8/00
Inventor 张羽
Owner SHENZHEN LANDWIND IND
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