A method of microangiography based on frequency domain oct

Abstract

The invention discloses a microangiography method based on frequency domain OCT. The method comprises the steps that S1, a frequency domain OCT system is constructed; S2, the line on the same positionof two-dimensional spectra in the x scanning direction is obtained, and a two-dimensional spectrum in the y scanning direction is obtained through reconstruction; reconstruction is conducted on linesat each position to obtain a group of the two-dimensional spectra in the y scanning direction; S3, following processing is conducted on all two-dimensional spectra in the y scanning direction to obtain corresponding blood flowing information of the two-dimensional spectra in the y scanning direction; S4, corresponding blood vessel information of the two-dimensional spectra in the y scanning direction is assembled into three-dimensional blood vessel information, and the three-dimensional blood vessel information is converted to a three-dimensional blood vessel image by using three-dimensionalvisible software. By means of the method, more abundant micrangium information can be detected, the requirements on detected environment are lower, and system assembling and adjusting are more simplified.

Description

【Technical field】 [0001] The invention relates to the fields of optical detection and biomedical engineering, in particular to a microangiography method for functional imaging based on a frequency-domain optical correlation tomography (OCT) system. 【Background technique】 [0002] Optical coherence tomography (OCT) is an imaging technique developed rapidly in recent years. While ensuring a certain detection depth, it achieves higher resolution and sensitivity than other methods, so it occupies a place in many imaging methods with its high resolution, high sensitivity, non-invasive and non-contact characteristics, and has a It has a good development prospect and has attracted more and more attention. Optical coherence tomography technology is based on the disciplines of optics, electronics, and computer technology. It combines semiconductor and ultrafast laser technology, ultrasensitive detection, precision automatic control, and computer image processing. After computer X-r...

AI Technical Summary

Problems solved by technology

Existing blood flow imaging methods such as color ultrasound Doppler technology, fluorescein angiography, and laser Doppler velocimetry cannot all meet these demanding requirements. They cannot provide high spatial resolution, and often require intravenous injection contrast agent to aid in imaging

Phase-resolved Doppler OCT technology can meet these requirements, but the disadvantage is that it requires high phase stability in the environment and is not suitable for clinical applications.

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