Focusing implementation method by adoption of aperture synthesis and ultrasonic holography for scanning

A technology of synthetic aperture and ultrasonic scanning, which is applied in ultrasonic/acoustic/infrasonic diagnosis, ultrasonic diagnosis, infrasonic diagnosis, etc. It can solve the problem that the B-ultrasound instrument cannot focus point by point, achieve clear image processing, and improve the accuracy of ultrasonic detection Effect

Inactive Publication Date: 2015-11-04
熊佑全
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  • Abstract
  • Description
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Problems solved by technology

[0003] In order to solve the problems in the prior art, the present invention provides a focusing realization method of synthetic aperture holographic ultrasonic scanning, which solves the problem that current B-ultrasound instruments cannot focus point by point

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  • Focusing implementation method by adoption of aperture synthesis and ultrasonic holography for scanning

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing.

[0011] A focusing realization method of small-aperture synthetic ultrasonic scanning, by using a synthetic aperture ultrasonic instrument to achieve focusing: (A) transmitting point-by-point focusing and receiving point-by-point focusing; (B) synthetic aperture; the ultrasonic instrument of the synthetic aperture sends ultrasonic waves The signal is synthesized several times to scan the body tissue using the same number of beamformers.

[0012] The synthetic aperture ultrasonic device emits plane waves, focused waves, and weakly focused waves.

[0013] In the step (A), the transmission propagation time of each array element participating is calculated according to the propagation path through the received data to obtain the time of emission in-phase accumulation to delay the emission to achieve point-by-point focusing; through receiving focusing Time to achieve receiving p...

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Abstract

The invention relates to the field of medical instruments and discloses a focusing implementation method by adoption of aperture synthesis and ultrasonic holography for scanning. The focusing implementation method is characterized in that an ultrasonic apparatus with the synthetic aperture is utilized for implementation of reception focusing of the large synthetic aperture and comprises following steps of: (A), emission of point-by-point focusing and reception of point-by-point focusing; (B), aperture synthesis performed in such a manner that an ultrasonic instrument with small number of channels is utilized for sending an ultrasonic wave signal in order to scan body tissues. The focusing implementation method by adoption of synthetic aperture and ultrasonic holography for scanning has following beneficial effects: plane waves are utilized and aperture synthesis and calculation are carried out in order to emit and receive double point-by-point focusing images, thereby improving the accuracy of ultrasonic inspection and measurement; and an ultrasound device with a small number of physical channels is used for processing sharp images.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a focusing realization method of synthetic aperture holographic ultrasonic scanning. Background technique [0002] The general B-ultrasound working process is: when the probe receives the excitation pulse, it emits ultrasonic waves (at the same time, the probe is controlled by the focus delay circuit to achieve the acoustic focus of the sound wave), and then after a period of delay, the probe receives the reflected echo signal, and the probe receives The returned echo signal is processed through filtering, logarithmic amplification and other signal processing. Then the DSC circuit performs digital conversion to form a digital signal, and further image processing is performed under the control of the CPU, and then the video signal is synthesized together with the chart forming circuit and the measuring circuit and sent to the display to form the B-ultrasound image we are familiar wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
Inventor 熊佑全
Owner 熊佑全
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