3D-Printed Anti-Scatter Collimators for Artifact Reduction in Cone-Beam CTMS58

The volumetric acquisition geometry for cone-beam CT (CBCT) results in increased scatter fraction, leading to image artifacts and errors in quantitative imaging. We describe the design of focused anti-scatter grids (ASGs) for CBCT, fabricated using 3D printing in dense metal. Septal wall thickness of less than 0.1mm can be achieved, resulting in transmission efficiency of over 80%. This approach may lead to nearly complete scatter rejection for CBCT, improving the performance of quantitative imaging systems.

This presentation is part of Minisymposium “MS58 - Instruments and techniques for biomedical research (2 parts)
organized by: Alberto Leardini (Laboratory of Movement Analysis and Functional-Clinical Evaluation of Prosthesis, Istituto Ortopedico Rizzoli, Bologna) .

David Holdsworth (Robarts Research Institute, Western University)
Santiago Cobos Cobos (Robarts Research Institute, Western University)
Hristo Nikolov (Robarts Research Institute, Western University)
Steven Pollmann (Robarts Research Institute, Western University)
computed tomography, image acquisition, scatter rejection