ESTRO 2025 - Abstract Book

S2225

Interdisciplinary – Global health

ESTRO 2025

If all non-European delegates joined an Amsterdam based congress online, and European delegates travelled as currently, the carbon footprint would drop by 81%.

Conclusion: The ESTRO conference has a significant carbon footprint. Hotel and venue accounted for <5% of the total footprint. The footprint can be significantly reduced through European train travel. Furthermore the choice of host city for a congress has considerable impact with central locations having up to 28% lower footprint as compared to peripheral locations. As the majority of the travel footprint stems from long-haul flights, digital attendance by non-European attendees could significantly reduce the travel carbon footprint.

Keywords: sustainability, carbon footprint, conferences

References: [1] Roberts I & Godlee F. Reducing the carbon footprint of medical conferences. BMJ. 2007; 334: 324 [2] Lichter K et al, Reducing the Environmental Impact of Health Care Conferences: A Study of Emissions and

Practical Solutions. JCO Glob. Oncol. 2024; 10 [3] climatiq, 2024, https://www.climatiq.io/.

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Digital Poster Carbon footprint contribution of ESTRO conference-related travels Laura Bogers 1 , Jaap van Emond 1 , Mariet Peeters 2 , Mariska Vos 2 , Ko van Wingerden 1 , Mirjam Mast 2 1 Medical Physics, Haaglanden Medical Center, The Hague, Netherlands. 2 Radiotherapy, Haaglanden Medical Center, The Hague, Netherlands