Optical, photoacoustic, ultrasonic multimodal imaging endoscope and its imaging method in the rectum

Abstract

The invention discloses an internal rectal optical, optoacoustic and ultrasonic multimode imaging endoscope which comprises a sleeve, an optoacoustic signal activating component, an ultrasonic signal activating and collecting component, an optical imaging component and an image reconstructing and displaying component. A device comprises a compact internal rectal optical, optoacoustic and ultrasonic multimode imaging endoscope, three kinds of imaging can be performed simultaneously, multi-parameter physical information and multi-scale structural images in recta can be acquired. The invention further provides a configuration scheme of the whole device and a method for utilizing the device for imaging. Three imaging techniques are highly integrated into one set of instrument, each imaging technique is optimized, and combination of three rectal endoscopic imaging methods of optical imaging, optoacoustic imaging and ultrasonic imaging is realized. The integrated endoscope combines specific advantages of three imaging modes, rectal physical images with multi-parameter information and multi-scale structural characteristics can be acquired, and application requirements of a rectal endoscope on medicine can be met better.

Description

technical field [0001] The invention belongs to the technical field of endoscope non-destructive testing, and in particular relates to an endoscope device and an imaging method integrating optical, photoacoustic and ultrasonic multi-mode imaging in the rectum. Background technique [0002] With the popularization and application of endoscopes in medicine, it is particularly important to design and manufacture more modern, rationalized, humanized and intelligent endoscopes. The application of rectal endoscopy plays a very important role. [0003] Existing methods include rectal electronic endoscopy and rectal ultrasonography. Although rectal electronic endoscopy can clearly show the external shape of the rectal inner wall, it cannot provide detailed information on the rectal wall and rectal submural tissue; rectal ultrasonography Endoscopic imaging is based on detecting the echoes of ultrasound signals in the rectal wall. It can image the tissues under the rectal wall and re...

AI Technical Summary

Problems solved by technology

[0003] Existing methods include rectal electronic endoscopy and rectal ultrasonography. Although rectal electronic endoscopy can clearly show the external shape of the rectal inner wall, it cannot provide detailed information on the rectal wall and rectal submural tissue; rectal ultrasonography Endoscopic imaging is based on detecting the echoes of ultrasound signals in the rectal wall. It can image the tissues under the rectal wall and reflect the differences in the acoustic impedance of rectal tissues, but the imaging resolution is not enough

[0004] The prior art "A Photoacoustic Endoscopic Imaging Method and Its Device" discloses a photoacoustic endoscopic imaging detection method and its device. The photoacoustic endoscopic imaging technology is based on the photoacoustic signal generated after the tissue absorbs the pulse laser Imaging is performed to reflect the difference in optical absorption within the tissue, combining the advantages of high contrast characteristics of pure optical imaging and high penetration depth characteristics of pure ultrasound imaging, but photoacoustic imaging can only reflect the single parameter information of tissue optical absorption difference

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