@article{Hawkins2010, 
author = {William G Hawkins},
title = {An Analytical Solution for Backscatter Tomography},
year = {2010},
journal = {Tsinghua Science and Technology},
volume = {15},
number = {1},
pages = {62-67},
keywords = {non-uniform attenuation, backscatter tomography, dental tomography, implant imaging, baggage screening},
url = {https://www.sciopen.com/article/10.1016/S1007-0214(10)70010-9},
doi = {10.1016/S1007-0214(10)70010-9},
abstract = {We utilize the Novikov-Natterer algorithm for non-uniform attenuation to invert the backscatter projections formed by the scatter of X-rays. The backscatter signal is treated as an emitter in a non-uniformly attenuating medium. This type of tomography has applications in radiology and dentistry for which metals effectively block the transmission of X-rays. Scanning for metals also has applications in security/baggage screening. The results show that when the forward scattering angle is zero, the algorithm, with a redefinition of the density function f, reduces to the PET attenuation correction.}
}