Needle guidance with Doppler-tracked polarization-sensitive optical coherence tomography.

ABSTRACT:

Significance

Optical coherence tomography (OCT) can be integrated into needle probes to provide real-time navigational guidance. However, unscanned implementations, which are the simplest to build, often struggle to discriminate the relevant tissues.

Aim

We explore the use of polarization-sensitive (PS) methods as a means to enhance signal interpretability within unscanned coherence tomography probes.

Approach

Broadband light from a laser centered at 1310 nm was sent through a fiber that was embedded into a needle. The polarization signal from OCT fringes was combined with Doppler-based tracking to create visualizations of the birefringence properties of the tissue. Experiments were performed in (i) well-understood structured tissues (salmon and shrimp) and (ii) ex

SUBMITTER: Harper DJ 

PROVIDER: S-EPMC10548115 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature