Cardiovascular three-dimensional optical coherence imaging system

Abstract

The invention provides a cardiovascular three-dimensional optical coherence imaging system. The system comprises a detection unit, a probe interface unit, an optical signal processing unit, a digital signal processing unit and a display which are connected sequentially, wherein the detection unit comprises a fiber-optic probe which is used for collecting a sample signal of a blood vessel according to the action of the probe interface unit and transmitting the sample signal to the optical signal processing unit through the probe interface unit; the optical signal processing unit is used for processing the sample signal to obtain an image frame; the digital signal processing unit comprises a data converter and a data corrector; and the data corrector is used for respectively performing data correction and three-dimensional reconstruction on the image frame after the image frame is converted by the data converter so as to obtain a three-dimensional image, and outputting the three-dimensional image to the display for displaying. The cardiovascular three-dimensional optical coherence imaging system can be used for improving the accuracy of three-dimensional optical coherence images.

Description

technical field [0001] The invention relates to the technical field of cardiovascular endoscopic imaging, in particular to a cardiovascular three-dimensional optical coherent imaging system. Background technique [0002] Optical coherent imaging technology is an imaging technology that has developed rapidly in the past ten years. It uses the basic principle of weak coherent optical interferometer to divide the light emitted by the light source into two beams, and one beam is emitted to the tissue under test, also called the sample arm. , the other beam is sent to the reference mirror, also called the reference arm, and then the two beams of light signals reflected from the tissue under test and from the reference mirror are superimposed and interfered, and finally according to the difference of the light signal with the tissue under test, it is displayed Image grayscales with different strengths can be used to image the inside of the tissue. [0003] According to the techni...

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Problems solved by technology

[0004] However, 3D cardiovascular optical coherence imaging is definitely not simply stacking 2D optical coherence imaging sequence images together to render a 3D picture, because there will be errors in the reconstruction, and it will mislead the doctor's understanding in serious cases.

In actual work, due to the friction between the spring tube and the catheter will vibrate during high-speed rotation, the actual collected 3D optical coherent image will form a rotational misalignment in the axial direction, so if the sequence image is directly reconstructed in 3D , there is misalignment in three-dimensional space, therefore, such results are inaccurate for clinical analysis, and seriously will lead to wrong diagnostic results

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