Excitation and three-dimensional sensing integrated device for diagnosing breast cancer or craniocerebral injury

Abstract

The invention discloses an excitation and three-dimensional sensing integrated device for diagnosing breast cancer or craniocerebral injury, which comprises an acoustic unit and a thermoacoustic excitation unit, wherein the acoustic unit comprises a circular gear, one or more than one cambered ultrasonic array, a bowl-shaped cambered shell in which ultrasonic coupling liquid is filled and a protecting film. The circular gear is concentrically arranged on the bowl-shaped cambered shell in a positioning way; the cambered ultrasonic arrays the radian of which is matched with the bowl-shaped cambered shell are inlaid from the top to bottom on the side wall of the bowl-shaped cambered shell; and the bottom of the bowl-shaped cambered shell is hermetically combined with the protecting film. The thermoacoustic excitation unit comprises a horn antenna and a waveguide tube. The horn antenna is located below the protecting film, and the bottom of the horn antenna is connected with the waveguide tube; and the lower edge of the bowl-shaped cambered shell is rotatably connected with the upper edge of the horn antenna. The invention integrates the excitation and the sensing of three-dimensional thermoacoustic imaging, and after the integrated device is connected with necessary external equipment, three-dimensional thermoacoustic imaging, ultrasonic single imaging or ultrasonic joint imaging can be realized.

Description

technical field [0001] The invention relates to the technical field of biomedical measurement and medical equipment, in particular to an excitation and three-dimensional sensing integrated device for diagnosis of breast cancer or craniocerebral injury. Background technique [0002] Breast cancer is a malignant tumor with a high incidence rate in the world. Now some cities in our country have accounted for the first place in the incidence of female tumors, such as Shanghai and Wuhan, and Beijing, Tianjin, Harbin and other cities have also taken the second place. Therefore, the threat of breast cancer to human life and health cannot be underestimated. Craniocerebral injury is a common type of trauma. In my country, the number of deaths due to traffic accidents exceeds 100,000 every year. Every minute, one person is disabled due to traffic accidents, of which craniocerebral injuries account for more than half. Therefore, it is very important to quickly and accurately reflect t...

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Problems solved by technology

[0004] In 2000, Kruger et al. respectively reported a three-dimensional thermoacoustic imaging method in which 64 unit probes were sparsely arranged in a hemispherical surface in a polar coordinate system to receive thermoacoustic signals in a hemispherical space (R.A.Kruger, K.K.Kopecky, A.M.Aisen, D.R.Reinecke, G.A.Kruger, and W.L.Kiser, "Breast Cancer in Vivo: Contrast Enhancement with Thermoacoustic CT at 434MHz-Feasibility Study," Radiology, 216(1), 279-283, 2000.); Three-dimensional thermoacoustic imaging can be achieved by mechanical scanning, but due to the large distance between multiple unit probes and the difficulty in precise positioning, its processing difficulty and spatial resolution are greatly limited

In 2001, Xu et al. reported the use of a unit focusing probe to sequentially perform circular and linear sector scanning to realize two-dimensional thermoacoustic tomography (M.H.Xu, G.Ku, and L.H.Wang, "Microwave-induced thermoacoustic tomography using multi-sector scanning, "Med.Phys., 28(9), 1958-1963, 2001.); due to the need to do mechanical scanning in two directions at the same time, its system stability and time resolution are greatly reduced

In particular, it should be pointed out that the signal acquisition of the above thermoacoustic imaging methods generally uses unit transducers to obtain thermoacoustic signals in different directions through different orientations, and then reconstruct the microwave absorption distribution of tissues through complex algorithms, which has a complex and stable system structure. However, it has disadvantages such as poor performance, large amount of calculation, and long time-consuming, and it is difficult to realize three-dimensional multi-mode combined imaging. Obviously, there are considerable limitations in practical applications and cannot meet the actual clinical needs.

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