Snapshot 2D tomography via coded aperture x-ray scatter imaging

Kenneth P. Maccabe, Andrew D. Holmgren, Martin P. Tornai, David J. Brady

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


This paper describes a fan beam coded aperture x-ray scatter imaging system that acquires a tomographic image from each snapshot. This technique exploits the cylindrical symmetry of the scattering cross section to avoid the scanning motion typically required by projection tomography. We use a coded aperture with a harmonic dependence to determine range and a shift code to determine cross range. Here we use a forward-scatter configuration to image 2D objects and use serial exposures to acquire tomographic video of motion within a plane. Our reconstruction algorithm also estimates the angular dependence of the scattered radiance, a step toward materials imaging and identification.

Original languageEnglish (US)
Pages (from-to)4582-4589
Number of pages8
JournalApplied optics
Issue number19
StatePublished - Jul 1 2013
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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