High-speed forward-viewing OCT probe based on Lissajous sampling and sparse reconstruction

• Xinyu Wu, Ragib Ishrak, Reza Reihanisaransari, Yogesh Verma, Bryan Spring, Kanwarpal Singh, and Rohith Reddy
• received 02/15/2024; accepted 04/26/2024; posted 04/30/2024; Doc. ID 521595
• Abstract: We present a novel endoscopy probe using optical coherence tomography (OCT) that combines sparse Lissajous scanning and compressed sensing for faster data collection. This compact probe is only 4 mm in diameter and achieves a large field of view of 2.25 mm² and an 11 mm working distance. Unlike traditional OCT systems that use bulky raster scanning, our design features a dual-axis piezoelectric mechanism for efficient Lissajous pattern scanning. It employs compressive data reconstruction algorithms that minimize data collection requirements for efficient, high-speed imaging. This approach significantly enhances imaging speed by over 40\%, substantially improving miniaturization and performance for endoscopic applications.