X-ray computed tomography using partially coherent Fresnel diffraction with application to an optical fiber
Abstract
A reconstruction algorithm for partially coherent x-ray computed tomography (XCT) including Fresnel diffraction is developed and applied to an optical fiber. The algorithm is applicable to a high-resolution tube-based laboratory-scale x-ray tomography instrument. The computing time is only a few times longer than the projective counterpart. The algorithm is used to reconstruct, with projections and diffraction, a tilt series acquired at the micrometer scale of a graded-index optical fiber using maximum likelihood and a Bayesian method based on the work of Bouman and Sauer. The inclusion of Fresnel diffraction removes some reconstruction artifacts and use of a Bayesian prior probability distribution removes others, resulting in a substantially more accurate reconstruction.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 11, 2021
- Source ID
- 10.1364/oe.414398
Entities
People
- Adele P. Peskin
- Axel A. Ekman
- Edward J. Garboczi
- Elisabeth Mansfield
- Jason D. Holm
- Zachary H Levine
Organizations
- Information Technology Laboratory
- Intelligence Advanced Research Projects Activity
- National Institutes of Health
- Office of Basic Energy Sciences