Computed Tomography?

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What is Computed Tomography (CT)?

Computed Tomography (CT) is a technique most known in the medical field to measure inside the body. It is gaining momentum in the industry as a non-destructive method appropriate for accurately measuring the inside of components. Based on X-Ray imaging, the CT software assembles images taken from different angles into a 3D model of the object measured. The resulting model is a 3D image where each voxel (pixels in 3D) contains information on the density of the material. A meshing algorithm is then used to separate the densities into regions and polygonize the surfaces into meshes. Metrology inspection tools are used to measure the dimensions of these surfaces, just like with a 3D scanner. The possibilities of inspections are then virtually infinite, from CAD comparison, GD&T or trend analysis to FEA validation.

This technique can be used for a wide range of applications:

  • Injection molding plastic parts inspection
  • Additive manufacturing parts
  • Porous materials inspection
  • Biomedical components


GOM CT is a state of the art metrology CT scanner capable of the highest resolution in the industry. Increasingly complex parts, especially in with injection molding or additive manufacturing processes, are pushing the demands of inspection technologies. GOM CT was designed by metrologists to simply deliver high-precision and repeatable measurements on internal structures:

  • 3D shape (internal and external)
  • Compare Nominal/Actual
  • Dimensions, GD&T
  • Porosity

GOM CT is developed by our partner, GOM. With over 20 years of experience, 60+ sites, and a team of more than 1,000 metrology specialist worldwide, GOM guarantees professional advice as well as local support and service. The combined worldwide network of Trilion and GOM allows our technologies to improve product quality and accelerate product development every day.

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