Abstract
Doppler optical coherence tomography (OCT) can image tissue structure and blood flow at micrometer-scale resolution but has limited imaging depth. We report a novel, linear-scanning, needle-based Doppler OCT system using angle-polished gradient-index or ball-lensed fibers. A prototype system with a 19-guage (diameter of ) echogenic needle is constructed and demonstrates in vivo imaging of bidirectional blood flow in rat leg and abdominal cavity. To our knowledge, this is the first demonstration of Doppler OCT through a needle probe in interstitial applications to visualize deeply situated microcirculation.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Xingde Li, Christian Chudoba, Tony Ko, Costas Pitris, and James G. Fujimoto
Opt. Lett. 25(20) 1520-1522 (2000)
Xingde Li, Tony H. Ko, and James G. Fujimoto
Opt. Lett. 26(23) 1906-1908 (2001)
Cameron J. Pedersen, Siavash Yazdanfar, Volker Westphal, and Andrew M. Rollins
Opt. Lett. 30(16) 2125-2127 (2005)