Publications

Recent Publications

Fast ungated five-dimensional cardiac MRI on a 1.5 T MR-linac for MRI-guided radiotherapy

M.L. Terpstra, T.E. Olausson, M.M.N. Aubert, C. Beijst, A. Sbrizzi, C.A.T. van den Berg, M.F. Fast
arXiv preprint arXiv:2607.16033 · 2026

Correcting fast irregular motion in PET: maximum-likelihood motion and activity (MLMA) reconstruction

Rodrigo José Santo, Ethan Waterink, Cornelis A.T. van den Berg, Hugo W.A.M. de Jong, Thomas Olausson, Alessandro Sbrizzi, Casper Beijst
EJNMMI Physics · 2026

Motion mitigation in positron-emission tomography guided radiotherapy delivered on a magnetic resonance imaging-linear accelerator

Albert J. Everard, Rodrigo José Santo, Pim T.S. Borman, Prescilla Uijtewaal, Martin F. Fast, Hugo W.A.M. de Jong, Cornelis A.T. van den Berg, Bas W. Raaymakers, Casper Beijst
Physics and Imaging in Radiation Oncology, 100970 · 2026

Continuous Ventricular Volumetric Quantification in Patients with Arrhythmias using Real-Time 3D CMR-MOTUS

Thomas E. Olausson, Maarten L. Terpstra, Rizwan Ahmad, Edwin Versteeg, Casper Beijst, Yuchi Han, Marco Guglielmo, Birgitta K. Velthuis, Cornelis van den Berg, Alessandro Sbrizzi
arXiv, arXiv:2603.04233 · 2026

Clinical practice, barriers to implementation, and priorities for equitable access of Stereotactic Body Radiation Therapy: An analysis of the global status by the ESTRO SBRT Focus Group

Ciro Franzese, Stephanie Tanadini-Lang, Dirk Verellen, Lisa Wiersema, Juliane Hörner-Rieber, Alejandra Méndez Romero, David Pasquier, Anna Bruynzeel, Judit Boda-Heggemann, Tom Depuydt, Patrik Sibolt, Najma Douir, Łukasz Kuncman, Casper Beijst, Harley Stephens, Carolina de la Pinta, Francesco Cuccia, Maaike Milder, Luca Nicosia, Hiroshi Onishi, Alexander V. Louie, Arjun Sahgal, Simon S. Lo, Ben J. Slotman, Matthias Guckenberger, Marta Scorsetti
Clinical and Translational Radiation Oncology 57 · 2025

Motion correction in CBCT imaging using gate‑less model‑based reconstruction of non‑rigid motion and images

Ethan Waterink, Rodrigo José Santo, Cornelis A.T. van den Berg, Alessandro Sbrizzi, Casper Beijst
Medical Physics 52 (10), e70070 · 2025

Free-running time-resolved first-pass myocardial perfusion using a multi-scale dynamics decomposition: CMR-MOTUS

Thomas E. Olausson, Maarten L. Terpstra, Niek R.F. Huttinga, Casper Beijst, Niels Blanken, Teresa Correia, Dominika Suchá, Birgitta K. Velthuis, Cornelis A.T. van den Berg, Alessandro Sbrizzi
Magnetic Resonance Materials in Physics, Biology and Medicine · 2025

openSSS: an open-source implementation of scatter estimation for 3D TOF-PET

Rodrigo José Santo, André Salomon, Hugo W.A.M. de Jong, Simon Stute, Thibaut Merlin, Casper Beijst
EJNMMI Physics 12 (1), 17 · 2025

Comparison of 18F-FET-PET- and MRI-based target definition for re-irradiation treatment of recurrent diffuse glioma

Albert Everard, Daniel Versnel, Veerle Ruijters, Nelleke Tolboom, Marielle Philippens, Tom Snijders, Joost Verhoeff, Szabolcs David, Casper Beijst
Clinical and Translational Radiation Oncology 52, 100931 · 2025

Repeatability of rectal cancer apparent diffusion coefficient measurements on a 1.5 T MR-linac

Hidde Eijkelenkamp, Guus Grimbergen, Brigid McDonald, Reijer Rutgers, Tim Schakel, Casper Beijst, Marielle Philippens, Gert Meijer, Martijn Intven
Physics and Imaging in Radiation Oncology 33, 100720 · 2025

CBCT-MOTUS: Model-Based Non-Rigid Motion Estimation and Correction for CBCT Imaging

Ethan Waterink, Rodrigo José Santo, Cornelis A.T. van den Berg, Hugo de Jong, Alessandro Sbrizzi, Casper Beijst
2024 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) · 2024

Time-resolved cardiac imaging and motion analysis using a multi-scale dynamics decomposition

Thomas E. Olausson, Casper Beijst, Alessandro Sbrizzi, Cornelis A.T. van den Berg, Niek R.F. Huttinga
Proc. International Society for Magnetic Resonance in Medicine (ISMRM) · 2023

Evaluation of the radiofrequency performance of a wide-bore 1.5 T positron emission tomography/magnetic resonance imaging body coil for radiotherapy planning

Woutjan Branderhorst, Bart R. Steensma, Casper Beijst, Erik R. Huijing, Cezar Alborahal, Edwin Versteeg, Bjoern Weissler, David Schug, Pierre Gebhardt, Nicolas Gross-Weege, Florian Mueller, Karl Krueger, Thomas Dey, Harald Radermacher, Oliver Lips, Jan Lagendijk, Volkmar Schulz, Hugo W.A.M. de Jong, Dennis W.J. Klomp
Physics and Imaging in Radiation Oncology 17, 13-19 · 2021