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) .

Authors:

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)

Keywords:

computed tomography, image acquisition, scatter rejection