Radiography imaging by 64/128 microstrip crystalline detector at different X-ray energies

Abstract

This paper summarizes some results obtained in the study of position sensitive detectors developed for experiments of high energies physics with the objective of evaluating its possible application to obtain X-ray digital images. A crystalline silicon microstrip detector with 64/128 channels coupled to two RX64 chips was used to obtain radiographic images of different objects. The more relevant figures for spectrometry applications were measured and reported. Two-dimensional images were obtained by scanning the object with a collimated beam using different source-target-detector positioning and three sources of X-rays (6.4, 8.04 and 22.16 keV). The counts acquired by each strip correspond to a particular collimator position during the scan, thus serving to reconstruct the image of the exposed to X-ray object and to reveal its internal structure. The preliminary results obtained using in-house made mammography phantoms allow to infer that such kind of detectors could be successfully introduced in the digital mammography practice.