title: Inverse scattering for rotationally scanned optical coherence tomography.
abstract: 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.
authors.affiliation: Beckman Institute of Advanced Science and Technology, Urbana, Illinois 61801, USA.
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Marks
authors.forename: Tyler S
authors.initials: TS
authors.lastname: Ralston
authors.forename: P Scott
authors.initials: PS
authors.lastname: Carney
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Boppart
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008027:Light; D008954:Models, Biological; D012399:Rotation; D012542:Scattering, Radiation; D041623:Tomography, Optical Coherence / Q000379:methods*