Title | Snapshot 2D tomography via coded aperture x-ray scatter imaging. |
Publication Type | Journal Article |
Year of Publication | 2013 |
Authors | KP MacCabe, AD Holmgren, MP Tornai, and DJ Brady |
Journal | Appl Opt |
Volume | 52 |
Issue | 19 |
Start Page | 4582 |
Pagination | 4582 - 4589 |
Date Published | 07/2013 |
Abstract | 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. |
DOI | 10.1364/AO.52.004582 |
Short Title | Appl Opt |