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Spiral ultrasound tomography method and system

A technology of tomography and ultrasound, which is applied in ultrasound/sonic/infrasonic diagnosis, ultrasonic diagnosis, ultrasound/sonic/infrasonic Permian technology, etc. It can solve the problems of long three-dimensional scanning time, shaking of ultrasonic transmission medium, and low resolution. , to achieve the effect of improving resolution and contrast, facilitating promotion and application, and shortening scanning time

Active Publication Date: 2020-01-21
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method needs to go through repeated stepping and stopping, which not only easily causes the shaking of the ultrasonic transmission medium, causing artifacts; but also because the scanning needs to be stopped and then moved, the three-dimensional scanning takes a long time, which greatly affects the comfort of the patient; another On the one hand, the tomographic imaging of the step-scan method can only reflect the slice information of a specific position when the motor stops, and accurate data cannot be obtained between the slices, which may cause missed diagnosis, and also makes the image obtained by this method in the Z-axis direction. lower resolution

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  • Spiral ultrasound tomography method and system

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Embodiment 1

[0067] The present embodiment provides a helical trajectory ultrasonic tomographic imaging method, which is used for ultrasonic three-dimensional imaging of breast. Such as Figure 1A As shown, the spiral trajectory scanning method adopted in the present invention can form a spiral trajectory by mechanically moving the transmitting array elements, or translate the ring probe in the Z-axis direction, and then sequentially excite the array elements on the ring to make the motion trajectory of the transmitting array elements The helix covers the entire volume imaging area. In addition, the helical trajectory scanning method adopted in the present invention can directly start the next layer of scanning without completing the 360-degree rotation of the trajectory of the transmitting array element, such as Figure 1B As shown, the trajectory of the transmitting element moves 50° every time one pitch is moved.

[0068] In order to have a deeper understanding of the approximate spira...

Embodiment 2

[0081] This embodiment provides a spiral trajectory ultrasonic tomography system, see Figure 4 , the system includes an ultrasound probe, an excitation and acquisition subsystem, a computing and storage server, and an image reading workstation. The ultrasonic probe is an ultrasonic generator and an ultrasonic sensor, which are used to generate ultrasonic waves. After the ultrasonic waves interact with the object to be imaged by reflection or transmission, the ultrasonic probe can also be used to receive echoes after the action. The excitation and acquisition system is used to generate high-voltage excitation signals to drive the probe to generate ultrasonic waves, and the acquisition system is used to collect echo signals, digitize and transmit them to the server. The computing and storage server is used to receive the echo data packet sent by the acquisition system, decode and rearrange the data format, then use the algorithm to reconstruct the ultrasonic tomogram, and final...

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Abstract

The invention belongs to the field of ultrasound imaging, and discloses a spiral ultrasound tomography method and system. The method is as follows: under the premise that an ultrasound probe is uniformly displaced along a Z-axis, the synchronous rotation of the ultrasound probe or the cyclic switching of an emission array element in the ultrasound probe is used to make a changing trajectory in a three-dimensional space of a position of the emission array element at each ultrasonic wave emission time be distributed along a spiral line or curve, the ultrasonic probe emits ultrasonic wave and receives and collects echo data during the uniform displacement of the ultrasonic probe along the Z-axis, and the ultrasound tomography of an object to be measured can be realized after the collected echo data are subjected to storage and data post-processed. By controlling the position change of the emission array element during the ultrasonic scanning process, a novel spiral ultrasound tomography three-dimensional scanning method and a corresponding system are obtained, the fast continuous uninterrupted data acquisition can be realized, the obtaining of a higher space resolution in the Z-axis direction can be ensured, and multi-layer redundant data can also be used to improve an image signal-to-noise ratio.

Description

technical field [0001] The invention belongs to the field of ultrasonic imaging, and more specifically relates to a spiral ultrasonic tomographic imaging method and system. Background technique [0002] Ultrasonic imaging refers to the use of an ultrasonic probe to emit ultrasonic waves on the object to be scanned, and the ultrasonic waves interact with the object to be scanned by reflection, scattering, and diffraction, and then detect ultrasonic echoes, and analyze and process these echo data to obtain ultrasonic reflection images. Ultrasound imaging technology is widely used in ophthalmology, obstetrics and gynecology, gastroenterology and other clinical medical testing. Compared with other imaging modes, clinical ultrasound detection has the advantages of no radiation to the human body, low detection cost, and real-time imaging. In the past 20 to 30 years, with the improvement of ultrasonic probe manufacturing and processing technology and the rapid development of compu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/14A61B8/00A61B8/08
CPCA61B8/145A61B8/4281A61B8/5207A61B8/4455A61B8/4494A61B8/4461A61B8/483A61B8/5215
Inventor 尉迟明丁明跃张求德宋俊杰刘阔林刘昭辉周亮全朝辉方小悦武云周权
Owner HUAZHONG UNIV OF SCI & TECH