Kris Thielemans
Invited speaker “PET is Wonderful”  2025

Prof. Kris Thielemans is Professor in Medical Imaging Physics at the Institute of Nuclear Medicine (INM), University College London, UK. Prof. Thielemans worked in industry from 2001 to 2011. He led the international team in GE Research that developed Q.Freeze(tm), the first commercial solution for respiratory motion correction in PET/CT. Since joining UCL in 2013, his research covers PET-CT, PET-MR and SPECT, including motion detection and correction, quantitative image reconstruction and synergistic (joint) reconstruction of multi-modality data, with an aim towards translation to practice, as exemplified in various projects with industry. Dr. Thielemans is the lead designer and maintainer of the open source project Software for Tomographic Image Reconstruction (stir.sourceforge.net), which allows quantitative image reconstruction for PET and SPECT data, and the Synergistic Image Reconstruction Framework (SIRF) for PET, SPECT and MR data (www.ccpsynerbi.ac.uk).