Publications [#280277] of David J. Brady
- MacCabe, KP; Holmgren, AD; Tornai, MP; Brady, DJ, Snapshot 2D tomography via coded aperture x-ray scatter imaging.,
Appl Opt, vol. 52 no. 19
pp. 4582-4589 , [doi]
(last updated on 2019/11/20)
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.