Optical coherence tomography of luminal structures, such as for intravascular or gastrointestinal imaging, is performed by using a fiber-optic catheter as a beam-delivery probe. The interrogating beam is scanned angularly by rotating the fiber around a fixed central axis. Because the beam is focused only at a fixed distance from the center of the fiber, only scatterers near this distance are resolved. We present a solution of the inverse scattering problem that provides an estimate of the susceptibility of the sample for an angularly scanned Gaussian beam focused at a fixed distance from the origin. This solution provides quantitatively meaningful reconstructions while also extending the volume of the sample that is resolvable by the instrument.
© 2006 Optical Society of America
Original Manuscript: January 23, 2006
Revised Manuscript: April 20, 2006
Manuscript Accepted: May 16, 2006
Vol. 1, Iss. 11 Virtual Journal for Biomedical Optics
Daniel L. Marks, Tyler S. Ralston, P. Scott Carney, and Stephen A. Boppart, "Inverse scattering for rotationally scanned optical coherence tomography," J. Opt. Soc. Am. A 23, 2433-2439 (2006)