Geert Janssens

Associate Professor - medical

Strategic program(s):

Contact

gjansse3@umcutrecht.nl

Pure profile

Research groups

Pediatric radiation oncology

Research aim

To optimize radiotherapy in pediatric renal tumors (Wilms), neuroblastomas, and high-grade gliomas To better understand side effects from radiotherapy To reduce inequalities in radiotherapeutic care across SIOP Europe affliliated countries.

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Recent publications

All publications

Impact of deep learning on CT-based organ-at-risk delineation for flank irradiation in paediatric renal tumours Mianyong Ding, Matteo Maspero, Semi Harrabi, Emmanuel Jouglar, Sabina Vennarini, Timothy Spencer, Britta Weber, Henriette Magelssen, Karen Van Beek, Remus Stoica, Simonetta Saldi, Tom Boterberg, Patrick Melchior, Marry M. van den Heuvel-Eibrink, Geert O. Janssens
Clinical and translational radiation oncology, 2026, vol. 56

Late toxicity after upper abdominal radiotherapy in pediatric Wilms tumor and neuroblastoma survivors. A systematic review on behalf of SIOPEN and SIOP-RTSG Francis S P L Wens, Federica Zonca, Harm van Tinteren, Beate Timmermann, Anne Laprie, Tom Boterberg, Mark Gaze, Pei Lim, Danny Jazmati, Karin Dieckmann, Sabina Vennarini, Patrick Melchior, Britta Weber, Monica Ramos Albiac, Agata Szulc, Vasiliy Grigorenko, Henriette Magelssen, Karen van Beek, Norbert Graf, Vassilios Papadakis, Sebastian J C M M Neggers, Marry M van den Heuvel-Eibrink, Geert O Janssens, Roel Polak
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2025, vol. 209

Gene Expression Analysis of (Paired) Primary and Relapsed Wilms Tumor Samples to Unravel the Underlying Factors Driving Tumor Recurrence Alissa Groenendijk, Jarno Drost, Annelies M C Mavinkurve-Groothuis, Martine van Grotel, Geert O Janssens, Annemieke S Littooij, Alida F W van der Steeg, Marry M van den Heuvel-Eibrink, Lennart Kester, Ronald R de Krijger
Cancer Medicine, 2025, vol. 14

European practice on neurovascular late effects after pediatric radiotherapy Laura Toussaint, Louise Tram Henriksen, Karen Van Beek, Stephanie Bolle, Charlotte Demoor-Goldschmidt, Jenny Gains, Morten Høyer, Geert O Janssens, Rolf-Dieter Kortmann, Catia Martins Pedro, Beate Timmermann, Katrin Scheinemann, Yasmin Lassen-Ramshad
Acta Oncologica, 2025, vol. 64, p.703-707

Remaining Challenges in the Treatment of Relapsed Wilms Tumor Kathryn S Sutton, Amy L Walz, Alissa Groenendijk, Andrew J Murphy, Luke Pater, Geert O Janssens, Jack Brzezinski, Elizabeth A Mullen, Filippo Spreafico, Jan Godzinski, Justine van der Beek, Marc HWA Wijnen, Marry M van den Heuvel-Eibrink, Max Pachl, Norbert Graf, Peter F Ehrlich, Rhoikos Furtwangler, Jesper Brok, James Geller
Pediatric Blood & Cancer, 2025, vol. 72

Deep learning-based auto-contouring of organs/structures-at-risk for pediatric upper abdominal radiotherapy Mianyong Ding, Matteo Maspero, Annemieke S Littooij, Martine van Grotel, Raquel Davila Fajardo, Max M van Noesel, Marry M van den Heuvel-Eibrink, Geert O Janssens
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2025, vol. 208