Miniature handheld multi-view optical coherence tomography probe for intraoperative vascular imaging

Vascular anastomosis, connecting two vessel ends together, is the foundation of plastic and reconstructive surgery. Every living tissue transplantation requires vascular anastomosis. While optical coherence tomography (OCT) imaging can provide objective information for intraoperative evaluation, currently it suffers from limited imaging penetration depth for relative large vessels, which will result in information loss at the bottom region of vessel. In this work, we designed a multi-view scanning scheme for the vessel imaging to increase the FOV effectively. To push the clinical translation, we used MEMS mirror to steer the beam and made a miniature handheld probe for testing. Preliminary results on IR sensing card, multilayer scotch tape, and plastic tube imaging showed the performance of our probe.