Computational 3D microscopy with optical coherence refraction tomography

Journal Article (Journal Article)

Optical coherence tomography (OCT) has seen widespread success as an in vivo clinical diagnostic 3D imaging modality, impacting areas including ophthalmology, cardiology, and gastroenterology. Despite its many advantages, such as high sensitivity, speed, and depth penetration, OCT suffers from several shortcomings that ultimately limit its utility as a 3D microscopy tool, such as its pervasive coherent speckle noise and poor lateral resolution required to maintain millimeter-scale imaging depths. Here, we present 3D optical coherence refraction tomography (OCRT), a computational extension of OCT that synthesizes an incoherent contrast mechanism by combining multiple OCT volumes, acquired across two rotation axes, to form a resolution-enhanced, speckle-reduced, refraction-corrected 3D reconstruction. Our label-free computational 3D microscope features a novel optical design incorporating a parabolic mirror to enable the capture of 5D plenoptic datasets, consisting of millimetric 3D fields of view over up to ±75◦ without moving the sample. We demonstrate that 3D OCRT reveals 3D features unobserved by conventional OCT in fruit fly, zebrafish, and mouse samples.

Full Text

Duke Authors

Cited Authors

  • Zhou, KC; McNabb, RP; Qian, R; Degan, S; Dhalla, AH; Farsiu, S; Izatt, JA

Published Date

  • June 1, 2022

Published In

Volume / Issue

  • 9 / 6

Start / End Page

  • 593 - 601

International Standard Serial Number (ISSN)

  • 2334-2536

Digital Object Identifier (DOI)

  • 10.1364/OPTICA.454860

Citation Source

  • Scopus