Microwave thermoacoustic-color ultrasound dual-modality detection device for nutritional perfusion

Abstract

The invention provides a microwave thermoacoustic-color ultrasonic dual-mode nutrient perfusion detection device and method. The device includes a function generator, a microwave generator, a sample pool, a data acquisition card and a computer, etc. The function generator emits a pulse sequence, which triggers the microwave generator to emit pulsed microwaves, which are uniformly irradiated to the tissue to be measured through the transmitting antenna, and the The absorption of microwave energy by the measured tissue causes an instantaneous temperature rise, resulting in a thermoacoustic effect, which converts heat energy into mechanical energy and radiates it in the form of ultrasonic waves; the computer uses the back projection algorithm to perform image reconstruction processing based on the thermoacoustic and ultrasonic time domain signals collected by the data acquisition card. Obtain microwave thermoacoustic and ultrasonic dual-modal imaging, and calculate the amount of nutrient perfusion. The present invention can detect the distribution and intensity of nutrients in blood, display the flow direction and velocity of nutrients in blood vessels, and obtain the information on the content of nutrients flowing through per unit time, providing an effective way to treat early breast tumors. way of diagnosis.

Description

technical field [0001] The invention relates to medical imaging technology, specifically a device based on microwave thermoacoustic and color ultrasonic imaging technology, combining two imaging methods, and dedicated to detecting nutrient perfusion parameters (the content of nutrient substances flowing per unit time). Background technique [0002] Vascular imaging techniques are used to detect a wide variety of diseases such as tumors, atherosclerosis, cardiovascular diseases, etc. Magnetic resonance imaging (MRI), positron emission tomography (PET) and computed tomography (CT) are commonly used clinical general inspection tools for blood vessels. MRI and PET have good resolution and high specificity; however, they are not widely used because of their high cost. CT also has some limitations, such as ionizing radiation and difficulty in imaging small vessels. [0003] Color Doppler imaging technology is a widely used clinical diagnostic technology, which can judge the loca...

AI Technical Summary

Problems solved by technology

MRI and PET have good resolution and high specificity; however, they are not widely used because of their high price

CT also has some limitations, such as ionizing radiation and difficulty in imaging small vessels

[0003] Color Doppler imaging technology is a widely used clinical diagnostic technology, which can judge the location of organs and quickly and intuitively display the distribution, direction and blood flow velocity of blood vessels. However, the essence of color Doppler imaging is still ultrasound imaging, and its contrast is still very low

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