| Popis: |
The simulation code named VXI (“Virtual X‐ray Imaging”) has been considerably improved since the issue of its first version, two years ago. Emphasis was particularly laid on devising faster (dedicated and optimized) ray tracing algorithms. At present, the computation time needed to simulate a transmitted image (i.e. formed by uncollided photons), with a polychromatic beam, complex sample geometry and high detector resolution, is typically in the range 0.01–10 s, with a simple personal computer (1 GHz microprocessor). This feature enables real‐time simulation of radioscopy and tomography setups. We have recently tackled the simulation of Rayleigh and Compton scattering using the same deterministic ray tracing approach. The performance of our code in the case of transmission images as well as preliminary results of the simulation of first‐order scattering are presented in this paper. |
