Speaker: Dr Simon Rit

Title: Pairwise data consistency conditions in x-ray cone-beam CT and SPECT

Date&Time: 25 October 2023, 1-2pm

Location: UCL CMIC 1st   floor 90 High Holborn and Zoom (please contact k.thielemans@ucl.ac.uk for details)

Abstract: Data consistency conditions (DCCs) are mathematical equations characterizing the redundancy in projections acquired by computed tomography (CT) scanners. DCCs can be used to detect and correct physical effects which makes the projections inconsistent, e.g. motion, scatter, or beam hardening. This talk will summarize our recent developments with DCCs of projections acquired by a cone-beam CT scanner and a parallel single photon emission CT (SPECT) with application to spectral CT calibration or motion detection during the acquisitions.

Bio: Simon Rit is a CNRS researcher at the CREATIS laboratory in Lyon, France since 2010, after a PhD at the Université Lumière Lyon 2 and a 2-year postdoc at the Netherlands Cancer Institute in Amsterdam, both on motion correction of cone-beam CT images for radiotherapy. His main research interests are tomographic reconstruction, motion correction in CT, spectral CT and proton CT. He is also known for his committment to the development of the reconstruction toolkit (RTK), an open source toolkit based on the insight toolkit (ITK) for tomographic reconstruction.