Snapshot fan beam coded aperture coherent scatter tomography

Mehadi Hassan, Joel A. Greenberg, Ikenna Odinaka, David J. Brady

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We use coherently scattered X-rays to measure the molecular composition of an object throughout its volume. We image a planar slice of the object in a single snapshot by illuminating it with a fan beam and placing a coded aperture between the object and the detectors. We characterize the system and demonstrate a resolution of 13 mm in range and 2 mm in cross-range and a fractional momentum transfer resolution of 15%. In addition, we show that this technique allows a 100x speedup compared to previously-studied pencil beam systems using the same components. Finally, by scanning an object through the beam, we image the full 4-dimensional data cube (3 spatial and 1 material dimension) for complete volumetric molecular imaging.

Original languageEnglish (US)
Pages (from-to)18277-18289
Number of pages13
JournalOptics Express
Issue number16
StatePublished - Aug 8 2016
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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