Integrated photoacoustic mammary gland imaging detection device and method based on optical fiber beam splitting and flexible detector

Abstract

The invention relates to an integrated photoacoustic mammary gland imaging detection device based on optical fiber beam splitting and a flexible detector. The integrated photoacoustic mammary gland imaging detection device comprises the detector and further comprises an optical fiber bundle, wherein the optical fiber bundle divides a laser beam into multiple laser beams, the detector is the flexible detector, the flexible detector comprises a flexible substrate which is deformable in a bent mode, but is not deformable in a tensile mode and fits with the surface shape of the mammary gland, and multiple array elements evenly distributed on the flexible substrate and receiving ultrasonic signals reflected by the mammary gland. The multiple ends, corresponding to the multiple laser beams, of the optical fiber bundle are coupled with the flexible substrate and are evenly distributed on the flexible substrate, and accordingly the laser light can penetrate through the flexible substrate to be irradiated onto the mammary gland. The invention further relates to an integrated photoacoustic mammary gland imaging detection method based on optical fiber beam splitting and the flexible detector. Large-area uniform photoacoustic imaging can be achieved, seamless fitting with the mammary gland to be detected is achieved, and the integrated photoacoustic mammary gland imaging detection device and the integrated photoacoustic mammary gland imaging detection method are especially suitable for breast cancer detection and belong to the technical field of photoacoustic imaging.

Description

technical field [0001] The invention relates to the technical field of photoacoustic imaging, in particular to a device for detecting breast cancer, in particular to a photoacoustic breast imaging detection device integrated with an optical fiber bundle and a flexible detector and a photoacoustic breast imaging detection method realized by using the device. Background technique [0002] Photoacoustic imaging technology, as a non-ionizing imaging method based on differences in light absorption inside tissues, has attracted more and more attention due to its advantages of high contrast, high imaging depth, and no damage, and is considered to be a promising prospect. Early breast diagnosis techniques. [0003] The principle of photoacoustic imaging technology for breast cancer detection is that the main component of normal breast tissue is fat, and the light absorption coefficient of fat is small, and in the process of rapid metabolism of tumor tissue, more water molecules and ...

AI Technical Summary

Problems solved by technology

In unit transducers, in order to reconstruct a complete frame of images, it is necessary to use machinery to rotate around the tissue to collect signals, so it takes a lot of scanning time; linear or circular is more common in multi-element transducers, among which Although the ring detector can receive signals from all directions, because it is a hard detector, the scanning radius is fixed. For objects with irregular shapes, it is necessary to make a detector with a relatively large radius to cover the object in order to obtain complete information. ; The linear detector can achieve seamless contact with the local position of the tissue, but the information of the relative position of the tissue will be lost when receiving the signal, which will distort the reconstructed image

[0005] Existing photoacoustic imaging technology mostly uses a beam of laser light to irradiate the part to be measured. Usually, the beam of light emitted by the laser resonator belongs to Gaussian light, and the light intensity presents an uneven distribution with strong middle and weak ends, making it difficult to achieve large-area imaging. Uniform Photoacoustic Imaging

[0006] In the prior art, there is only the technology of using flexible detectors for the sealing detection of metal boxes, there is no technology of using flexible detectors for photoacoustic imaging, let alone the technology of using flexible detectors for breast detection

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