Photoacoustic mammary gland imaging device and imaging method

Abstract

The invention relates to the technical field of medical imaging, in particular to a photoacoustic mammary gland imaging device and method. According to the imaging device, the upper surface, the lower surface and the two sides of the to-be-detected mammary gland are compressed, the shape of the to-be-detected mammary gland is standardized, the thickness of the compressed mammary gland is reduced, more photons penetrate through the mammary gland, the deeper imaging depth is achieved, and the problem that due to the fact that the mammary gland is irregular in shape and / or large in size, the imaging efficiency is high is effectively solved. And the imaging depth is insufficient. Moreover, the metal plate and the elastic ultrasonic coupling medium not only are beneficial to receiving more transmitted ultrasonic signals, but also can enhance the tightness degree of contact with the to-be-detected mammary gland, so that the problem of limited visual angle of a plane probe during photoacoustic mammary gland imaging is unexpectedly solved, the range of the ultrasonic probe capable of receiving the ultrasonic signals is enlarged, and the detection accuracy is improved. And the imaging quality and the detection accuracy are obviously improved.

Description

technical field [0001] The present invention relates to the technical field of medical imaging, and relates to a photoacoustic breast imaging device and an imaging method, in particular to a photoacoustic breast imaging device and an imaging method that improve a limited viewing angle and increase imaging depth. Background technique [0002] Photoacoustic imaging is a powerful new non-invasive functional imaging technology, which can evaluate the changes of angiogenesis, hemoglobin and blood oxygen saturation in real time and quantitatively during the process of tissue lesions. Photoacoustic breast imaging is a new non-destructive and non-invasive technology based on the photoacoustic effect. When the pulsed infrared laser is irradiated on the breast, the photons diffuse in the breast tissue, and the abnormally rich blood vessels in the deep cancerous part absorb part of the scattered photons and generate heat. Ultrasound signals are generated; the ultrasound probe outside t...

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Problems solved by technology

[0003] However, in the process of photoacoustic imaging, the ultrasonic signal receiving angle of the traditional linear array ultrasonic probe is limited within a certain range, that is, there is a problem of limited viewing angle, which will lose a considerable part of the photoacoustic signal, and its two-dimensional array is limited Technology and cost, it is difficult to make a large-scale array that meets the needs of photoacoustics; in addition, the shape of the mammary gland is irregular and the volume is large, so there is also the problem of insufficient imaging depth caused by the large internal attenuation of photons in the mammary gland

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