Ultrasonic imaging method and device

An ultrasonic imaging method and ultrasonic imaging technology, applied in ultrasonic/sonic/infrasonic diagnosis, sonic diagnosis, infrasound diagnosis, etc., can solve the problems of lack of flexibility, not supporting simultaneous adjustment of emission frequency, etc., to achieve good image quality and improve visibility performance and signal-to-noise ratio, reducing the effect of cluttered echoes

Inactive Publication Date: 2010-06-23
GE MEDICAL SYST GLOBAL TECH CO LLC
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Problems solved by technology

In addition, prior art spatial compounding techniques do not support adjusting the transmit frequency while constructing deflected image frames, which makes current spatial compounding techniques generally inflexible

Method used

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  • Ultrasonic imaging method and device
  • Ultrasonic imaging method and device
  • Ultrasonic imaging method and device

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] The following mainly uses linear scanning as an example for description, but the present invention is not limited to linear scanning, and can also be used for sectoral scanning and the like.

[0032] figure 1 The principle of scanning using a linear ultrasound beam is depicted. Such as figure 1 As shown, a scan is a parallel offset along a straight line 204 of a sound ray 202 traveling in the z direction from the radiation point 200 such that the sound ray sweeps in the x direction over a rectangular two-dimensional region 206 . Thus, linear scanning is realized. Wherein, the sound ray 202 corresponds to the central axis of the ultrasonic beam. The scanning of the sound ray 202 is achieved in the scanning direction by a parallel offset of the aperture of the ultrasound beam. The movement of the aperture is realized by continuously ...

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Abstract

The invention relates to ultrasonic imaging method and device, in particular to ultrasonic imaging method and device for acquiring a composite ultrasonic image by using a space and frequency composite technology. By using the space and frequency composite technology, frames observable from a plurality of angles are acquired by a Tx / Rx frequency and beam deflection angles which can be configured by a user and the frames are compounded to form a composite image with high resolution and favorable mirror reflection contour. Because the frequency in the invention can be flexibly configured along with the deflection angles, the invention can further widen the allowable range of the beam deflection angles and lower less resolution to a certain extent to restrict the side lobes and the grating lobes of the deflection frames and weaken spot noise and clutter, thereby improving the visibility, the signal-to-noise ratios of the tested tissue and needle and the texture appearance and smoothening the edges.

Description

technical field [0001] The present invention relates to an ultrasound imaging method and equipment, in particular to an ultrasound imaging method and equipment using space and frequency compounding techniques to obtain composite ultrasound images. Background technique [0002] Ultrasonic diagnostic instrument is a kind of ultrasonic imaging equipment. It uses ultrasound (ultrasound for short) as an information carrier to image the internal structure of the human body. There is a corresponding relationship between the image information and the actual structure of the human body in terms of space and time distribution. Medical ultrasound imaging relies on the propagation of ultrasound in the human body. When it encounters different tissues and organs, it will produce echoes with different acoustic intensities due to their different acoustic characteristic impedances (reflected waves or backscattered waves of ultrasound on human tissues) ) to create an image. Because of its sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
CPCA61B8/4281A61B8/4209A61B8/0841
Inventor 樊华陈惠人M·哈尔曼
Owner GE MEDICAL SYST GLOBAL TECH CO LLC
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