Intravascular photoacoustic-optical coherence tomography-near-infrared multi-mode imaging device and method

Abstract

The invention discloses an intravascular photoacoustic-optical coherence tomography-near-infrared multi-mode imaging device and method. The device comprises a computer, a photoacoustic imaging system,an optical coherence tomography system, a near-infrared optical imaging system, an optical fiber combiner, a double-cladding optical fiber photoelectric combination slip ring, a three-dimensional motion control system and a miniature endoscopic probe. On the one hand, the photoacoustic imaging system, the optical coherence tomography system and the near-infrared optical imaging system are connected to the computer; on the other hand, double-cladding optical fibers are disposed on the double-cladding optical fiber photoelectric combination slip ring through the optical fiber combiner and thenconnected to the miniature endoscope probe, and the double-cladding optical fiber photoelectric combination slip ring is disposed on a three-dimensional motion detection system. Integration of three intravascular imaging methods of photoacoustic imaging, OCT imaging and near-infrared optical imaging is achieved, detection procedures are simplified, the detection difficulty is reduced, and the situation that work is conducted by means of the three imaging methods simultaneously can be achieved.

Description

technical field [0001] The invention relates to the research field of vascular endoscopy, in particular to a photoacoustic-OCT-near-infrared light vascular endoscopy imaging device and method. Background technique [0002] In the 21st century, cardiovascular and cerebrovascular diseases have become the number one killer affecting human health, causing heavy casualties and consuming a huge amount of social wealth. It is well known that the rupture of atherosclerotic plaque is the main cause of acute cardiovascular and cerebrovascular events, so the study of plaque vulnerability is one of the most popular topics in the world. However, the detection and risk assessment of vulnerable plaques is still a major international problem. Although intravascular ultrasound imaging and intravascular optical imaging have been used in clinical practice, and provide guidance for the diagnosis and treatment of atherosclerosis. However, none of the existing technologies can comprehensively a...

AI Technical Summary

Problems solved by technology

[0008] (1) The existing technology uses a vibrating mirror to realize two-dimensional scanning, which cannot be applied to blood vessels;

[0009] (2) The prior art adopts conical mirrors, and its disadvantage is that the required laser energy of this technology is large, and because the pulsed laser light does not converge, the resolution of the photoacoustic image is not good;

[0010] (3) The existing technology does not combine near-infrared light imaging and cannot provide chemical information of tissues. At the same time, the use of grin lenses cannot achieve better focus on single-mode light and multi-mode light at the same time

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