High-resolution x-ray microtomography uses x-rays to create cross-sections of a physical object that can be used to recreate a virtual model (3D model) without destroying the original object. While medical and industrial tomography equipment has resolution in the order of millimeters, microtomography allows for the visualization of the interior of materials in the micrometers order. This technology has shown to be promising both in studies of new materials and in new industrial sectors. The aim of this symposium is to promote the interaction between researchers from the academic and industrial sectors interested in the research, development, methodology, practice and use of microtomography applied to materials (metals, polymers and composites)