Ultrashort pulse microwave thermoacoustic breast imaging detection device

A technology of breast imaging and ultrashort pulses, which is applied in diagnostic recording/measurement, medical science, sensors, etc. It can solve problems such as image blur, multi-time, and impact on resolution, and achieve easy operation, low cost, and improved time resolution. Effect

Active Publication Date: 2015-11-18
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unit detector needs to use a mechanical rotation to collect signals to reconstruct a complete frame of image, so it takes a lot of time. If it is used to detect mammary glands, the inspected mammary gland moves relative to the detector, which will cause image blur and affect the resolution. , so it is urgent to find an ultrasonic detector that can quickly detect

Method used

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  • Ultrashort pulse microwave thermoacoustic breast imaging detection device
  • Ultrashort pulse microwave thermoacoustic breast imaging detection device
  • Ultrashort pulse microwave thermoacoustic breast imaging detection device

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Embodiment 1

[0047] Such as figure 1 As shown, the ultrashort pulse microwave thermoacoustic breast imaging detection device includes a microwave generation system, a data acquisition system, a coupling system, an image reconstruction system, and a microwave leak-proof system; the microwave generation system, coupling system, data acquisition system, and image reconstruction system are connected in sequence ;The microwave generating system and the coupling system are set in the microwave leak-proof system;

[0048] The microwave generation system includes a pulsed microwave generator 1-1 (the peak power of the radiated microwave is 4-40MW, and the pulse width is 10ns), a transmitting antenna 1-2 and a function signal generator 1-3; the pulsed microwave generator 1-1 and The function signal generator 1-3 is connected, and the transmitting antenna 1-2 is set on the pulse microwave generator 1-1;

[0049] Pulsed microwave generator 1-1 is a high-power pulsed microwave generator; its peak pow...

Embodiment 2

[0069] The breast imaging detection method using the ultrashort pulse microwave thermoacoustic breast imaging detection device of embodiment 1 comprises the following steps:

[0070] (1) The subject to be tested lies flat on the test bed, and the breast is placed in the breast matcher, and the height is adjusted so that the part to be tested is parallel to the plane of the circular array detector, and the part to be tested is immersed in the coupling liquid;

[0071] (2) Turn on the pulsed microwave generator to generate ultra-short pulsed microwaves, which are transmitted to the mammary gland through the microwave antenna, and are excited by the thermoacoustic effect to generate ultrasonic signals; the ultrasonic signals are transmitted to the ultrasonic detector through the coupling liquid, and converted on the ultrasonic detector The electrical signal is transmitted to the data acquisition system; the imaging results are as follows: image 3 shown;

[0072] image 3 The dev...

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Abstract

The invention discloses an ultrashort pulse microwave thermoacoustic mammography detecting device. The device comprises a microwave generating system, a data acquiring system, a coupling system, an image reconstruction system and a microwave leakage protective system; the microwave generating system, the coupling system, the data acquiring system and the image reconstruction system are connected in sequence; and the microwave generating system and the coupling system are arranged in the microwave leakage protective system. According to the ultrashort pulse microwave thermoacoustic mammography detecting device, the thermoacoustic effect is utilized, and the excitation is performed by the ultrashort pulse microwave, therefore, the excitation efficiency is greatly improved, and the required microwave power density is greatly reduced; a multielement annular array ultrasonic detector and the data acquiring system are utilized, thus the mammary microwave absorption difference can be quickly detected over short time, and the temporal resolution is high; when in detecting, only a part to be detected is irradiated, and no microwave leaks to the outer space, and therefore, no interference is brought to the outside environment or outside instruments. The ultrashort pulse microwave thermoacoustic mammography detecting device is high in applicability, simple and convenient to operate, long in continuous running time, low in cost, and capable of effectively prompting the industrialization and clinical application of the thermoacoustic technology.

Description

technical field [0001] The invention belongs to the technical field of thermoacoustic imaging, in particular to an ultrashort pulse microwave thermoacoustic breast imaging detection device. Background technique [0002] Microwave thermoacoustic imaging is a new type of non-destructive testing technology, which has attracted more and more attention because of its advantages of high contrast and high resolution, safety and non-destructive, and high imaging depth. When a substance is irradiated with pulsed microwaves, the substance absorbs microwave energy to cause an instantaneous temperature rise. If the pulse width of the microwave is relatively narrow, the absorbed energy cannot undergo thermal diffusion within the duration of the microwave pulse. At this time, it can be regarded as adiabatic expansion. , heat energy is converted into mechanical energy and radiated in the form of ultrasonic waves, which is the thermoacoustic effect. [0003] The thermoacoustic signal mainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00
Inventor 邢达计钟杨思华娄存广
Owner SOUTH CHINA NORMAL UNIVERSITY
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