Master thesis : Optimization of a tomosynthesis trajectory on an existing CT system (including introduction to research methodology)

Abstract

This master thesis investigates the optimization of tomosynthesis acquisition trajectories for the Dx-Box C5 multi-axis X-ray inspection system developed by X-RIS. The Dx-Box C5 combines a C-arm with a five-axis motion stage, enabling flexible acquisition geometries for industrial non-destructive testing.

The objective of this work is to identify the acquisition trajectories that achieve the best image quality. Four simple trajectories and several combined configurations were evaluated through numerical simulations performed using the gVXR framework. Image quality was assessed using a composite score combining contrast and depth resolution metrics.

The results show that rotational trajectories provide better depth localization, while translation trajectories yield higher contrast. Among all configurations evaluated, the R1-R2 combination (combining C-arm rotation and turntable rotation) achieved the highest overall score and is identified as the most suitable trajectory for implementation on the Dx-Box C5 system.