High-sensitivity synchronous angio-lymphography based on a speckle spectrum contrast OCT
Optics Letters
|September 14, 2023
Summary
A new speckle spectrum contrast (SSC) method using spectral-domain optical coherence tomography (SD-OCT) simultaneously images lymphatic and blood vessels. This technique differentiates vessels in biological tissues for improved disease research.
Area of Science:
- Biomedical Optics
- Medical Imaging
- Vascular Biology
Background:
- Accurate visualization of both lymphatic and blood vessels is crucial for understanding various physiological and pathological processes.
- Existing imaging techniques often struggle with simultaneous differentiation and imaging of these two distinct vascular networks.
Purpose of the Study:
- To develop and demonstrate a novel method for the accurate selection and synchronous imaging of blood and lymphatic vessels.
- To enable simultaneous differentiation and visualization of lymphatic-vascular networks within biological tissues.
Main Methods:
- A speckle spectrum contrast (SSC) method was developed, leveraging spectral-domain optical coherence tomography (SD-OCT).
- Time-lapse OCT intensity signals were transformed into the Fourier frequency domain.
- The SSC signal, derived from frequency spectrum analysis, was used to differentiate vessel types based on distinct frequency intervals.
Main Results:
- The SSC method successfully differentiated static tissue, lymphatic vessels, and vascular vessels into separate frequency intervals.
- Simultaneous imaging and differentiation of lymphatic and blood vessels were achieved in a mouse ear model.
- The feasibility of three-dimensional (3D) synchronous angio-lymphography was demonstrated.
Conclusions:
- The proposed SSC method provides a powerful tool for simultaneous angio-lymphography.
- This technique enhances the ability to study vascular and lymphatic systems, offering potential benefits for disease research and treatment strategies.
