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

TitleSnapshot 2D tomography via coded aperture x-ray scatter imaging.
Publication TypeJournal Article
Year of Publication2013
AuthorsKP MacCabe, AD Holmgren, MP Tornai, and DJ Brady
JournalAppl Opt
Start Page4582
Pagination4582 - 4589
Date Published07/2013

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.

Short TitleAppl Opt