Utilization of Virtualized Environments for Efficient X-ray Attenuation Approximation

The acquisition of true X-ray attenuation information of an object typically requires a mono-energetic X-ray source and computed tomography (CT) where many radiographs are acquired and reconstructed with a computationally complex reconstruction algorithm. This approach is prohibitive for use in applications where CT is not feasible, either from the number of objects, the geometry of the objects, the speed of the inspection, or the lack of a mono-energetic source. This work proposes an approach where a virtualized environment of the known scan geometry and object dimensions are used to calculate accurate path lengths through the object and applied to a radiograph or set of radiographs acquired from an identical configuration to allow an effective attenuation (averaged over the X-ray beam spectrum) to be reasonably approximated. This approach can be utilized for applications where many objects need to be inspected in the same configuration efficiently. Additionally, a single radiograph is needed instead of several and a trivial calculation is performed as opposed to a complex reconstruction calculation.

1. Barrett, H.H. and K.J. Myers, Foundations of Image Science, Wiley-Interscience, 2004. 2. Chenn, Y.C., “System Calibration and Image Reconstruction for a New Smal l-Animal SPECT System,” PhD thesis, The University of Arizona, 2006. 3. Hubbel, J.H. and S.M. Seltzer, “Tables of X-ray mass attenuation coefficients and mass energy-absorption coefficients from 1 kev to 20 mev for elements z = 1 to 92 and 48 additional substances of dosimetric interest,” June 2013. 4. Jimenez, E.S., “Simulation and Estimation of Organ Uptake in a Digital Mouse Phantom,” PhD thesis, The University of Arizona, 2010.
Usage Shares
Total Views
11 Page Views
Total Shares
0 Tweets
0 PDF Downloads
0 Facebook Shares
Total Usage