Integrated opto-acoustic, ultrasonic and opto-acoustic elastic endoscopic imaging device and method thereof

Abstract

The invention relates to an integrated opto-acoustic, ultrasonic and opto-acoustic elastic endoscopic imaging device which is characterized in that the imaging device comprises a pulse laser, an optical filter, a diaphragm, an objective and an optical fiber coupler sequentially arranged along the transmission path of pulse laser and also comprises a multimode optical fiber, an optical fiber slip ring, a rotation component, a rotary step motor, an electric slip ring, an integrated probe, a translation platform, a translation step motor, an ultrasonic pulse transceiver, a time delay unit and a computer, wherein the computer is in signal connection with the pulse laser; the pulse laser is in signal connection with the time delay unit; the time delay unit is in signal connection with the ultrasonic pulse transceiver; and the ultrasonic pulse transceiver is in signal connection with the electric slip ring. The invention also relates to a method for imaging by using the imaging device. In the invention, three kinds of imaging can be obtained, the detection precision can be improved while multi-parameter and multi-scale information in blood vessels can be obtained, and the invention belongs to the technical field of blood vessel endoscopy.

Description

technical field [0001] The invention relates to the technical field of vascular endoscopy, in particular to an integrated photoacoustic, ultrasonic and photoacoustic elastic endoscopic imaging device and an imaging method thereof. Background technique [0002] Cardiovascular and cerebrovascular diseases are diseases with a high mortality rate, and the accuracy of blood vessel detection has higher requirements. Modern medical methods for detecting blood vessels include magnetic resonance (MRI) angiography and angiographic imaging (IVUS). Local detail information of the vessel lumen. Intravascular photoacoustic imaging technology is a new type of medical imaging technology. The main principle is to irradiate tissue with pulsed laser light, and the tissue absorbs the light to generate thermoelastic waves. By imaging the generated ultrasonic waves, relevant information of the tissue can be obtained. The photoacoustic elastography is to obtain the elastic information of the abs...

AI Technical Summary

Problems solved by technology

The end of the optical fiber of this device directly emits light at 90°, the laser is divergently irradiated on the object to be measured, the laser is not converged, and there is also the problem of poor resolution of the photoacoustic image, and in the device disclosed in this technology, the coupling of the laser and the optical fiber is adopted The way of direct coupling, in this way, the deviation is very easy to occur during the rotation of the fiber, which leads to the reduction of the transmission efficiency of the laser to the fiber, and directly affects the generation of photoacoustic signals

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