Early-stage breast cancer nondestructive screening and imaging system

Abstract

The invention discloses an early-stage breast cancer nondestructive screening and imaging system, which mainly comprises circular gears, an annular ultrasonic array, a bowl-shaped annular shell, ultrasonic coupling liquid, a protective film, a horn antenna, a waveguide tube, a microwave generator, a frequency divider, a data acquisition circuit, a preprocessing circuit, a stepping motor, a driver, a digital I / O card, a computer and a display. The working process of the system is that: detected mammary glands are radiated by pulse microwaves to generate thermo-acoustic signals which are received by the annular ultrasonic array and are finally acquired by the computer; the driver drives the annular ultrasonic array to rotate to a next position around detected biological tissues; and the steps of acquisition and rotation are repeated until the thermo-acoustic signals of enough positions are received, and the computer re-establishes three-dimensional thermo-acoustic images of the detectedtissues. The early-stage breast cancer nondestructive screening and imaging system can quickly and nondestructively realize the three-dimensional thermo-acoustic imaging of the detected mammary glands to provide one of important bases for the diagnosis of early-stage breast cancer.

Description

technical field [0001] The invention relates to the technical fields of biomedical measurement and medical equipment, in particular to an early breast cancer nondestructive screening imaging system. Background technique [0002] Breast cancer is the most common malignant tumor that seriously affects women's physical and mental health and even threatens their lives. According to statistics, the incidence rate accounts for 7-10% of all kinds of malignant tumors in the whole body. About 1.2 million women are diagnosed with breast cancer every year in the world , and 400,000 women died of it, and the number is increasing at a rate of 2% to 3% every year. It is estimated that the annual number of new cases of breast cancer in the world will reach 1.4 million in 2010. Now in our country, breast cancer has accounted for the first place in the incidence of female tumors in some cities, such as Shanghai and Wuhan, Beijing, Tianjin, Harbin and other cities have also taken the second p...

AI Technical Summary

Problems solved by technology

[0003] At present, breast cancer screening mainly uses manual hand examination to assist other medical clinical detection methods. Commonly used ultrasound imaging uses reflection echo imaging when ultrasound waves encounter an interface with changing acoustic impedance during propagation in the body, but the imaging contrast of early-stage lesions is very low. Low; X-CT technology is an image formed by the different shadows produced by different parts of the tissue’s absorption of X-rays, but imaging harmful rays as information carriers may lead to an increase in the probability of cancer; MRI is used Coil detection technology obtains tissue relaxation information and proton density information imaging technology, which has no damage to the human body and can realize functional imaging, but the equipment cost is high, and the use and maintenance costs are expensive, causing a large economic burden to patients, and the equipment cannot miniaturization

At present, there is no low-cost, scalable, and especially suitable for early breast cancer detection and imaging in the clinical field of medicine

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