Reading material and other useful resources
3D X-ray Histology (XRH) Wiki page
Image processing
Feature extraction and image processing by Mark Nixon and Alberto Aguado
Principles of CT
$8
The Principles of Computerised Tomographic Imaging by Avinash Kak and Malcolm Slaney
Overview of CT
An excellent overview of computer tomography and use, technical limitations, data analysis and so on can be found at the UTCT website
Simulation of X-ray Spectra