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Vienna, Austria

ESTRO 2025

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Programme

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100 Sessions
Friday
May 02
08:30 - 17:00
Interdisciplinary: Radiotherapy as “New Kid on the Block”: Uncommon indications
Pre-Meeting Course
Friday
May 02
08:30 - 17:00
Radiobiology: Predictive molecular signatures in radiation oncology
Pre-Meeting Course
Friday
May 02
08:30 - 17:00
Clinical: Multidisciplinary management of bladder cancer: how to implement contemporary radiotherapy in your department
Pre-Meeting Course
Urology
Friday
May 02
08:30 - 17:00
RTT: Design to dissemination - Research bootcamp 2025
Pre-Meeting Course
Friday
May 02
08:30 - 17:00
Physics: Impact of current (radio)biological knowledge on treatment choices in radiotherapy
Pre-Meeting Course
Friday
May 02
08:30 - 17:00
Brachytherapy: Innovations in evidence based brachytherapy (Interventional RT) of the H&N region
Pre-Meeting Course
Head & Neck / Skin
Friday
May 02
08:30 - 17:00
Multidisciplinary: Practical guide to combine novel systemic therapies and radiation therapy
Pre-Meeting Course
Soft Tissue
Friday
May 02
17:00 - 18:00
Plenary Hall
Opening Ceremony
Ceremony
Saturday
May 03
08:00 - 08:40
Mahler
Chemoradiotherapy still plays a role in the multidisciplinary care of oesophageal and gastric cancer
Karin Haustermans, Belgium;
Maria Hawkins, United Kingdom
Meet-the-Experts
Interdisciplinary
GI
Saturday
May 03
08:00 - 08:40
Brahms
Moving from single cell genomics to spatial transcriptomics
Marie-Catherine Vozenin, Switzerland
In this session Pr R Beijersbergen will demonstrate how functional genomic screening technologies can be applied to radiation oncology research. More specifically, he will highlight the numerous advantages of spatial transcriptomics over single-cell transcriptomics, emphasizing its ability to integrate gene expression analysis with spatial information, enabling gene expression mapping in the context of individual cell and histology. Lastly, he will address current limitations, including analytical complexity, resolution and cost.
Teaching Lecture
Radiobiology
Saturday
May 03
08:00 - 08:40
Plenary Hall
Another year has gone by: What’s new in axillary irradiation including RNI?
Charlotte Coles, United Kingdom
Teaching Lecture
Clinical
Breast
Saturday
May 03
08:00 - 08:40
Strauss 1-2
Implementation of the ESTRO "reirradiation of glioblastoma" guideline
Christina Tsien, Canada;
Marta Scorsetti, Italy
This guideline session provides critical insights into the implementation of the "ESTRO/EANO recommendation on reirradiation of glioblastoma" guideline. The session offers a comprehensive analysis of the guideline's core components, centered on the nine key questions that formed the basis for 18 recommendations and nine expert statements. You will gain knowledge of patient selection criteria, imaging techniques for recurrence assessment, target volume delineation, treatment planning and combined treatment modalities. To enhance the guideline’s practical relevance, we will present two illustrative case reports. These real-world cases will demonstrate the application of the guideline's recommendations, highlighting both their potential uses and limitations in clinical practice.
Meet-the-Experts
Clinical
CNS / Reirradiation
Saturday
May 03
08:00 - 08:40
Schubert
Foundation models in radiotherapy
Jasper Nijkamp, Denmark
In this teaching lecture Harini Veeraraghavan will explore why foundation models are essential for radiation treatment applications, addressing key challenges such as the limited availability of labelled data and the diversity of imaging modalities in radiotherapy. She will discuss whether new models must always be developed or if existing ones can be leveraged, presenting relevant use cases for both approaches. By examining segmentation, dose prediction, outcome prediction, and longitudinal tracking, the session will provide insights into the role of foundation models in radiotherapy and strategic considerations for their adoption in clinical workflows.
Teaching Lecture
Physics
AI in RT / SBRT
Saturday
May 03
08:00 - 08:40
Lehar 1-3
Reference dosimetry for ultra-high dose rate radiotherapy
Hugo Palmans, Austria
Teaching Lecture
Physics
Dosimetry & QA / FLASH
Saturday
May 03
08:00 - 08:40
Haydn
Lung cancer radiotherapy: Pioneering trends and innovations for future practice
Anna Dinkla, The Netherlands
In this teaching session Sarah Barrett, Assistant Professor in Radiation Therapy of the Trinity college and University of Dublin, will give an overview of the current status and role of radiotherapy in the treatment of lung cancer. Recent technical advances on imaging improvements, integration of AI models into the workflow, and a growing interest in robust optimization are discussed. Additionally, the expanding role of adaptive radiotherapy, and the changing profile of lung cancer patients treated with radiotherapy due to personalised medicine, will be highlighted. Finally, it is explained how all these developments will influence the role of the RTT in the future, and which skills and knowledge they need to acquire to be able to continue to deliver excellent patient care.
Teaching Lecture
RTT
Lung
Saturday
May 03
08:00 - 08:55
Strauss 3
Shaping the future of brachytherapy: A roadmap for enhanced clinical application
Peter Niehoff, Germany
A panel discussion with five experts will explore the future of brachytherapy, based on survey results from participants of the GEC-ESTRO workshop. Panelists include experienced brachytherapists, representatives from ESTRO, young ESTRO members, and a patient advocate. They will discuss key findings from the survey, addressing challenges, innovations, and strategies for advancing brachytherapy. Topics include technological developments, education for future specialists, patient perspectives, and improving accessibility. This discussion aims to bridge clinical practice with emerging trends, fostering collaboration among professionals and patients. By integrating diverse viewpoints and data-driven insights, the panel seeks to define a sustainable and progressive path for brachytherapy.
Panel Discussion
Brachytherapy
Gynecology and Urology
Saturday
May 03
08:45 - 10:00
Mahler
Joint ESTRO-JASTRO: Transforming radiotherapy through modulation of tumour immune systems
Hitoshi Ishikawa, Japan;
Vincenzo Valentini, Italy
Symposium
Interdisciplinary
Saturday
May 03
08:45 - 10:00
Brahms
Advances in DNA damage response: Bridging mechanisms and clinical applications in radiation therapy
Apostolos Menegakis, The Netherlands;
Bartłomiej Tomasik, Poland
The DNA damage response (DDR) plays a crucial role in determining the efficacy and toxicity of radiotherapy. This session will provide an overview of recent advances in our understanding of DDR mechanisms and how these can be exploited to improve clinical outcomes. Topics will include new insights into the accuracy and regulation of homologous recombination, the emerging role of epigenetic modifications in double-strand break repair, and key findings from recent clinical trials combining radiotherapy with DDR inhibitors. The session will conclude with a panel discussion focusing on the translational relevance of these findings and future directions for integrating DDR-targeted approaches in clinical practice.
Symposium
Radiobiology
Saturday
May 03
08:45 - 10:00
Plenary Hall
Optimisation of treatment for early breast cancer: A leap out of the box
Birgitte Offersen, Denmark;
Sukhdeep Kaur Nagpal, United Kingdom
This session will explore strategies to optimise treatment for early breast cancer, pushing the boundaries of current practices. It will highlight how advanced radiotherapy techniques are reducing cardiac risk, improving patient care, and minimising side effects. The use of biomarkers will be discussed, focusing on their potential to personalise treatment and enhance patient outcomes. The session will also review the role of tumour-bed boost, exploring how to identify patients who will benefit most and when it can be safely omitted. Finally, this session will explore the emerging role of artificial intelligence in treatment planning and delivery for early breast cancer.
Symposium
Clinical
Breast
Saturday
May 03
08:45 - 10:00
Strauss 1-2
Joint ESTRO-EANO: Advances in the treatment of adult-diffuse gliomas
Giuseppe Minniti, Italy;
Matthias Preusser, Austria
Symposium
Clinical
CNS / Reirradiation
Saturday
May 03
08:45 - 10:00
Schubert
The impact of not knowing what you don't know
Daniela Thorwarth, Germany;
Pierre Montay-Gruel, Belgium
Pitch Session
Physics
Saturday
May 03
08:45 - 10:00
Lehar 1-3
In-vivo treatment verification in particle therapy: Quo vadis?
Edmond Sterpin, Belgium;
Vlad Badiu, The Netherlands
In particle therapy, accurately determining where particles stop in the patient is crucial to ensure safer and more precise treatments. Over the past decade, various technological solutions have been proposed, but no industrial system for large-scale in vivo treatment verification is currently available. Prof. Katia Parodi will present an overview of these solutions, while Prof. Christian Richter will discuss existing clinical data, emphasizing the real-world impact and importance of integrating verification into clinical workflows. Prof. Thomas Bortfeld will highlight how verification could enable innovative treatment techniques. Dr. Julien Smeets will conclude by addressing the technical and industrial challenges of integrating these systems into complex and evolving particle therapy platforms, including considerations for proton arc therapy and FLASH.
Symposium
Physics
Dosimetry & QA
Saturday
May 03
08:45 - 10:00
Haydn
Optimising online adaptive radiotherapy delivery
Brayden Geary, Australia;
Sarah Barrett, Ireland
Adaptive radiotherapy (ART) has become more prevalent as planning and treatment systems advance, allowing for more efficient delivery of care across a wide variety of tumour sites. In order to further improve the quality and efficiency of ART, this symposium aims to provide insight from leading RTT and Physics experts working across different adaptive systems. Topics covered will range from process improvement initiatives, training and credentialing frameworks, the integration of AI and how proton therapy is using adaptive workflows. This symposium will be of great interest to current and future users of adaptive systems.
Symposium
RTT
GI / Positioning & Immobilisation
Saturday
May 03
09:00 - 10:00
Strauss 3
Strategies for dose accumulation in brachytherapy
Asa Carlsson Tedgren, Sweden;
Sofia Spampinato, The Netherlands
This symposium will focus on dose accumulation challenges and methodologies in brachytherapy. The discussion will cover dose summation approaches in combined brachytherapy and external beam radiotherapy, highlighting both clinical and research scenarios. Key aspects of image registration will be described, including different registration methods, their impact on dose summation accuracy, and considerations on quality assurance in brachytherapy. Finally, the session will address cumulative dose assessment in skin cancer applications, exploring the challenges of dose accumulation and the role of deformable image registration in improving accuracy in dose assessments.
Symposium
Brachytherapy
Gynaecology / Skin
Saturday
May 03
09:00 - 10:00
Stolz 1
Advanced treatment planning 1
Gerd Heilemann, Austria;
Marta Bogowicz, The Netherlands
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Physics
AI in RT
Saturday
May 03
09:00 - 10:00
Business 1-2
Sarcoma / Skin cancer / Malignant melanoma
Bruno Fionda, Italy;
Clare David, United Kingdom
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Clinical
FLASH / Skin / Soft Tissue
Saturday
May 03
09:00 - 10:00
Stolz 2
Genito-urinary 3
Cem Onal, Turkey;
Charlien Berghen, Belgium
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Clinical
Urology
Saturday
May 03
09:00 - 10:00
Business 3-4
Toxicity and outcome prediction
Gilles Defraene, Belgium;
Nanna Sijtsema, The Netherlands
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Physics
Lung
Saturday
May 03
10:30 - 11:30
Mahler
Upper GI 1
Francesco Cellini, Italy;
Gian Marco Petrianni , Italy
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Clinical
GI
Saturday
May 03
10:30 - 11:30
Brahms
Biomarkers and strategies to predict radiation response
Francesco Pasqualetti, Italy;
Franziska Eckert, Austria
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Radiobiology
Breast / Urology
Saturday
May 03
10:30 - 11:30
Plenary Hall
Late-Breaking Papers 1
Barbara Alicja Jereczek-Fossa, Italy;
Matthias Guckenberger, Switzerland
Late-Breaking Papers are presented in one of the sessions scheduled in the main session halls. Each presentation will be followed by a discussant. Sessions will be recorded and available on-demand.
Proffered Papers
Clinical
Saturday
May 03
10:30 - 11:30
Strauss 1-2
CNS & Heart
Judit Boda-Heggemann, Germany;
Mario Levis, Italy
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Clinical
CNS
Saturday
May 03
10:30 - 11:30
Schubert
CBCT-based online adaptive radiotherapy
Marta Senkowska, Poland;
Sonja Wegener, Germany
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Physics
Dosimetry & QA / Positioning & Immobilisation
Saturday
May 03
10:30 - 11:30
Lehar 1-3
Particle therapy: Unlocking the full potential
Oliver Jäkel, Germany;
Stefan Both, The Netherlands
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Physics
Lung
Saturday
May 03
10:30 - 11:30
Haydn
Precision redefined: Advances in adaptive radiotherapy
Dawid Bodusz, Poland;
Rianne de Jong, The Netherlands
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
RTT
Positioning & Immobilisation
Saturday
May 03
10:30 - 11:30
Strauss 3
Brachytherapy for gynaecological cancers
ferah yildiz, Turkey;
Maximilian Schmid, Austria
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Brachytherapy
Gynaecology
Saturday
May 03
10:30 - 11:30
Stolz 1
Head & neck 2
Daan Nevens, Belgium;
Vassilis Kouloulias, Greece
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Clinical
Head & Neck
Saturday
May 03
10:30 - 11:30
Business 1-2
Transforming quality assurance through innovation
Enrico Clementel, Belgium;
Loïc Grevillot, Austria
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Physics
Saturday
May 03
10:30 - 11:30
Stolz 2
Advanced image acquisition and processing for online adaptive radiotherapy
Guillaume Landry, Germany;
Linda Chen, The Netherlands
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Physics
Saturday
May 03
10:30 - 11:30
Business 3-4
Paediatric & Mixed sites / Palliation
Juliane Hörner-Rieber, Germany;
Raffaella De Pietro, Belgium
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Clinical
Soft Tissue
Saturday
May 03
11:40 - 12:40
Plenary Hall
Presidential Symposium: Transformative innovation through partnership
Matthias Guckenberger, Switzerland
Symposium
Interdisciplinary
Breast / CNS / Dosimetry & QA / FLASH / SBRT / Urology
Saturday
May 03
11:40 - 12:40
Haydn
Treatment of spinal tumours: A football match
Beate Timmermann, Germany
Multidisciplinary Tumour Board
Clinical
CNS / Soft Tissue
Saturday
May 03
13:00 - 14:00
Strauss 3
GEC-ESTRO Assembly
Assembly
Brachytherapy
Saturday
May 03
12:55 - 13:25
Stolz 1
Head & Neck
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
Head & Neck
Saturday
May 03
12:55 - 13:25
Business 1-2
AI in RT
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
AI in RT
Saturday
May 03
12:55 - 13:25
Stolz 2
CNS
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
CNS
Saturday
May 03
12:55 - 13:25
Business 3-4
Dosimetry & QA
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
Dosimetry & QA
Saturday
May 03
13:30 - 14:00
Stolz 1
Breast
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
Breast
Saturday
May 03
13:30 - 14:00
Business 1-2
FLASH
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
FLASH
Saturday
May 03
13:30 - 14:00
Stolz 2
Lower & Upper GI
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
Lower & Upper GI
Saturday
May 03
13:30 - 14:00
Business 3-4
Positioning & Immobilisation
Meet & Greet sessions provide journey participants with the opportunity to network and to meet ESTRO focus group representatives who developed these journeys. Registration for Meet & Greet sessions is required via the Journeys tab on the ESTRO 2025 website.
Meet & Greet
Positioning & Immobilisation
Saturday
May 03
14:15 - 14:40
Plenary Hall
Emmanuel van der Schueren Award
Award Lecture
Interdisciplinary
Dosimetry & QA / SBRT / Urology
Saturday
May 03
14:40 - 15:05
Plenary Hall
Jens Overgaard Legacy Award
Award Lecture
Interdisciplinary
Dosimetry & QA / SBRT / Urology
Saturday
May 03
15:15 - 16:30
Mahler
Joint ESTRO-CARO: Transforming radiotherapy by rethinking interdisciplinary collaboration
Esther Troost, Germany;
George Rodrigues, Canada
Radiation oncology practice continues to evolve with the rapid integration of technological and therapeutic changes in order to provide optimal care and outcomes to our patients. Effective interdisciplinary coordination and communication is central to coordinate these efforts and will be the primary focus of this interactive session. Specifically, presentations related to patient centric care, as well as collaborations within and outside radiation oncology will highlight both challenges and opportunities that exist to "transform radiotherapy by rethinking interdisciplinary collaboration".
Symposium
Interdisciplinary
Saturday
May 03
15:15 - 16:30
Brahms
This house believes that the capacity for mathematical oncology and AI to revolutionise personalised medicine is an overhyped promise
Antje Dietrich, Germany;
Laure Marignol, Ireland
Debate
Radiobiology
AI in RT
Saturday
May 03
15:15 - 16:30
Plenary Hall
Management of stage III NSCLC in the IO era: Knife or beam?
Gitte Fredberg Persson, Denmark;
Luca Boldrini, Italy
Debate
Clinical
Lung
Saturday
May 03
15:15 - 16:30
Strauss 1-2
Joint ESTRO-ESMO: Integration of novel systemic therapies into radiotherapy: Why, when and how?
Giuseppe Curigliano, Italy;
Icro Meattini, Italy
Symposium
Clinical
Breast / CNS / SBRT
Saturday
May 03
15:15 - 16:30
Schubert
This house believes that NTCP models should be leading our clinical decision-making
Andrew Hope, Canada;
Laura Cella, Italy
In radiation oncology, treatment decisions require balancing therapeutic efficacy with the risk of toxicity. Normal Tissue Complication Probability (NTCP) models offer a quantitative framework for estimating treatment-related side effects, potentially enabling safer, more personalized care. However, whether they should take the lead in clinical decision-making remains a matter of debate. Arguing for the motion, Markus Alber and Hans Langendijk will advocate for NTCP models as essential tools for guiding patient management. Opposing them, Tiziana Rancati and Ivan Vogelius will highlight model limitations and question their reliability. The stage is set for a compelling debate—but who has the stronger arguments? That’s for you, the audience, to decide!
Debate
Physics
GI
Saturday
May 03
15:15 - 16:30
Lehar 1-3
Verification and QA for online adaptive radiotherapy
Catharine Clark, United Kingdom;
Sara Hackett, The Netherlands
Online adaptive radiotherapy (OART) presents an opportunity to account for changes in the patient's anatomy and physiology over the course of treatment, potentially allowing us to target disease more accurately. However, OART also requires a re-evaluation of many aspects of the treatment process, in particular for verification and quality assurance of the online adaptive workflow. In this session, three expert physicists present an overview of the online adaptive workflow and the challenges for QA arising from the transition to OART, the potential solutions to these challenges, and the new risks and the necessary changes associated with plan-specific QA.
Symposium
Physics
Dosimetry & QA / Positioning & Immobilisation
Saturday
May 03
15:15 - 16:30
Haydn
Personalisation of patient information needs
Karen Molan , Ireland;
Naman Julka-Anderson, United Kingdom
The first talk “Assessing health literacy (HL) in RT patients” will cover; Background of communication skills and HL for RT’s, HL assessments within RT, HL tools & recommendation, Benefits and barriers to HL and future Recommendations. The second talk “Information barriers for older patients with intellectual disability (ID) in accessing cancer treatment” will discuss the background ID and cancer, Barrier types, EuCan qualitative preliminary results and future recommendations. The third talk “Improving RT information for LGBTIQ+ patients” discussion will include background of healthcare inequities for LGBTIQ+ patients, considerations for LGBTIQ+ patients undergoing RT, inclusive communication and cultural sensitivity in patient communication, psychosocial needs, community support and health care professional education and development.
Symposium
RTT
Saturday
May 03
15:15 - 16:30
Strauss 3
Interventional immuno-radiotherapy: The role of interventional radiotherapy (brachytherapy) in the immunotherapy era
Ewa Burchardt, Poland;
Luca Tagliaferri, Italy
In this symposium, the latest advancements in Interventional Radio-Immunotherapy will be discussed, emphasizing the synergy between radiotherapy and immunotherapy to improve cancer treatment outcomes, with a special focus on brachytherapy (Interventional radiotherapy). The lectures will cover radiobiological aspects, including the effects of different radiation types and dose rates, and address challenges in dose distribution. Additionally, the symposium will focus on specific tumors such as gynecological, head, neck, skin, and urological cancers. Ongoing clinical trials and future directions will be explored, with an emphasis on personalized approaches based on tumor immune profiling to optimize treatment efficacy.
Symposium
Brachytherapy
Head & Neck / Gynaecology / Skin / Urology
Saturday
May 03
15:15 - 16:15
Stolz 1
Lower GI 2
Calogero Casà, Italy;
Kyubo Kim, Korea Republic of
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Clinical
GI
Saturday
May 03
15:15 - 16:15
Business 1-2
Innovations in radiotherapy care and support
Claire Poole, Ireland;
Pieternel Thysebaert, Belgium
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
RTT
Saturday
May 03
15:15 - 16:15
Stolz 2
Genito-urinary 4
Filippo Alongi, Italy;
Jennifer Le Guevelou, France
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Clinical
Urology
Saturday
May 03
15:15 - 16:15
Business 3-4
Advanced treatment planning 2
Linda Rossi, The Netherlands;
Wens Kong, The Netherlands
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Physics
Saturday
May 03
17:00 - 18:00
Mahler
Economically sustainable radiotherapy
M. Carmen Rubio Rodríguez, Spain;
Timothy Hanna, Canada
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Interdisciplinary
Saturday
May 03
17:00 - 18:00
Brahms
Innovation in normal tissue protection
Claudia Rübe, Germany;
François Paris, France
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Radiobiology
FLASH / Skin / Urology
Saturday
May 03
17:00 - 18:00
Strauss 1-2
Breast 1
Philip Poortmans, Belgium;
Yasemin Bolukbasi, Turkey
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Clinical
Breast
Saturday
May 03
17:00 - 18:00
Schubert
Highlights predicting toxicities
Giuseppe Magro, Italy;
Tiziana Rancati, Italy
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Physics
Saturday
May 03
17:00 - 18:00
Lehar 1-3
Advancing quality by multicentre collaboration
Sarah Kelly, Belgium;
Stephen Kry, USA
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Physics
Dosimetry & QA
Saturday
May 03
17:00 - 18:00
Haydn
Beyond the beam: Redefining the patient experience
Joanna McNamara, United Kingdom;
Patsey Conway Murray, Qatar
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
RTT
Saturday
May 03
17:00 - 18:00
Strauss 3
GI / Head & neck / Eye brachytherapy
Ashwini Budrukkar, India;
Jose Luis Guinot, Spain
Proffered Papers
Brachytherapy
Head & Neck
Saturday
May 03
17:00 - 18:00
Stolz 1
Intra-fraction motion management
Davide Cusumano, Italy;
Helen Grimes, United Kingdom
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Physics
Positioning & Immobilisation
Saturday
May 03
17:00 - 18:00
Business 1-2
Paediatric tumours
Paola Jablonska, Spain;
Raouia Ben Amor, Tunisia
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Clinical
CNS
Saturday
May 03
17:00 - 18:00
Stolz 2
Lung 3
Andreas Rimner, Germany;
VICTOR DUQUE-SANTANA, Spain
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Clinical
Lung
Saturday
May 03
17:00 - 18:00
Business 3-4
Innovations in particle therapy: More efficient, more adaptive and more control
Eva Van Weerd, The Netherlands
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Physics
Sunday
May 04
08:00 - 08:40
Mahler
Radiation omission trials: The dust has settled - How to revisit and optimise radiation oncology clinical trial design in smarter ways?
David Krug, Germany
Radiotherapy has been the focus of many de-escalation trials in oncology. This session gives a critical overview over de-escalation and radiotherapy omission trials as well as the specifics of trial design in this setting, in particular non-inferiority trials. The optimization for future design of trials in this space in regards of patient-relevant endpoints, non-inferiority margins and multi-disciplinary collaboration will be addressed.
Teaching Lecture
Interdisciplinary
Breast
Sunday
May 04
08:00 - 08:40
Plenary Hall
Implementation of the "postoperative H&N target volume definition" guideline
Silke Tribius, Germany;
Vincent Grégoire, France
Meet-the-Experts
Clinical
Head & Neck
Sunday
May 04
08:00 - 08:40
Strauss 1-2
Rectal cancer is the new anal cancer: Organ preservation in focus
Emmanouil Fokas, Germany
Panel Discussion
Clinical
GI
Sunday
May 04
08:00 - 08:40
Schubert
Multi-parametric MRI for radiotherapy
Faisal Mahmood, Denmark
Multiparametric MRI has a significant unleashed potential for radiation therapy by providing detailed tumor characterization and treatment guidance. Its clinical applications span various aspects of radiotherapy, yet challenges such as standardization and clinical integration persist. Advances in artificial intelligence are enabling new possibilities, including improved image acquisition, image analysis and automation. Future perspectives focus on the continued development of multiparametric MRI to enhance treatment planning and patient outcomes. This session will provide a basic introduction to multiparametric MRI techniques, insights into their current status in radiotherapy, existing barriers, and emerging innovations shaping the future of MRI-guided radiotherapy.
Teaching Lecture
Physics
Sunday
May 04
08:00 - 08:40
Brahms
FLASH radiotherapy: From bench to bedside
Pierre Montay-Gruel, Belgium
Over a decade ago, FLASH radiotherapy emerged in the field of radiation oncology with the promise of widening the therapeutic window. While the number of supporting preclinical studies has grown exponentially, technological and biological challenges have slowed its clinical translation, resulting in only a limited number of early-phase clinical trials currently underway. This panel discussion brings together three multidisciplinary experts with experience in clinical translation. They will explore why this promising technique has not yet been widely adopted in clinical practice and discuss the necessary steps and actions to ensure the safe and successful translation of FLASH radiotherapy into clinical use. The discussion will also highlight the importance of veterinary clinical trials and preclinical biology studies in bridging the gap from bench to bedside, ensuring that FLASH radiotherapy's potential is fully realized in both human and veterinary medicine.
Panel Discussion
Radiobiology
Dosimetry & QA / FLASH / Skin
Sunday
May 04
08:00 - 08:40
Lehar 1-3
Autoplanning: Supported by clinical evidence and motivated by clinical need
Ane Appelt, United Kingdom
Teaching Lecture
Physics
AI in RT
Sunday
May 04
08:00 - 08:40
Haydn
Motion management strategies when treating thoracic/abdominal oligometastases with SBRT: medical physics expert and RTT perspectives
Michelle Leech, Ireland
This teaching lecture will focus on motion management strategies specifically when treating oligometastatic disease (OMD) in the thoracic and abdominal regions with SBRT. The lecture will be presented from the viewpoints of both the perspectives of the RTT and the medical physics expert (MPE). The MPE will start the lecture by giving a brief overview of the history of OMD. Concepts such as ITV, MidPos, MidVent and continuous target tracking will be discussed in the line of online adaptive delivery. The MPE will also pose a question over the optimal hardware for such treatment delivery- are ‘traditional’ linear accelerators sufficient or are dedicated, high technology units required? The RTT perspective will take the position of motion management when treating multiple volumes in the same plan on the MR-linac and will refer to the sites most commonly treated in this manner-lung, mediastinum, liver, abdominal volumes and abdominal lymph nodes. The presentation will follow the pathway from pre-treatment to on-treatment, leading to on-treatment decision making by the RTT with specific focus on what planes and which volumes to gate. Finally, some trouble shooting points will be given as well as consideration to questions which are still unanswered in this field.
Teaching Lecture
RTT
Positioning & Immobilisation / SBRT / Soft Tissue
Sunday
May 04
08:00 - 08:40
Strauss 3
Organ preservation with penile brachytherapy
Christian Kirisits, Austria
Brachytherapy is a promising treatment option allowing organ preservation for penile carcinoma treatments. This teaching session will give an overview starting with anatomy, pathology and the different treatment options. The entire brachytherapy treatment will be presented in detail including the current state of the art in literature, patient selection criteria and the details on the procedure from implant to treatment planning. Outcome data, experience from a leading center and potential future directions will conclude this session.
Teaching Lecture
Brachytherapy
Urology
Sunday
May 04
08:45 - 10:00
Mahler
Joint ESTRO-EORTC: Novel methodologies for clinical research in radiation oncology: Time to think outside of the box?
Corinne Faivre-Finn, United Kingdom;
Joost Verhoeff, The Netherlands
This session explores innovative approaches to clinical research in radiation oncology, challenging traditional methodologies and highlighting the need for adaptability in a rapidly evolving field. The first talk discusses the limitations of RCTs, including their high costs, long timelines, and challenges in keeping pace with technological advancements. The second talk examines the role of real-world evidence, defining its scope, regulatory perspectives, and impact on clinical decision-making. The third talk explores pragmatic trials as a bridge between efficacy and real-world effectiveness, addressing their design and implementation. Finally, the session covers the Trials Within Cohort (TwiCs) approach, demonstrating how cohort-based randomised trials can offer ethical and practical advantages. Together, these talks offer a roadmap for modernizing clinical research in radiation oncology.
Symposium
Interdisciplinary
Dosimetry & QA / GI / Lung / Soft Tissue
Sunday
May 04
08:45 - 10:00
Brahms
Radiation biology of targeted radionuclide therapy
Emilie Alvarez-Andres, Germany;
Paul Span, The Netherlands
This symposium “Radiation Biology of Targeted Radionuclide Therapy” will compare the (immunological) effects of targeted radionuclide therapy to that of external beam radiation therapy, and discuss the differences between alpha and beta radiation. Key topics in radiopharmaceutical development, radiation biology, and therapeutic advancements will be covered, including the radiopharmaceutical pipeline, theranostic applications, clinical translation, and patent considerations. Auger electrons will also be introduced, highlighting their therapeutic potential and recent research findings. Collectively, this symposium will offer valuable insights into the evolving field of targeted radiation therapies and their clinical impact.
Symposium
Radiobiology
Sunday
May 04
08:45 - 10:00
Plenary Hall
Management of older patients with locally advanced head and neck cancer: Challenges for clinical practice
Jesper Grau Eriksen, Denmark;
Renata Zahu, Romania
A substantial part of the head and neck patients are more than 70 years of age at diagnosis. This calls for special considerations when deciding the treatment in collaboration with the patient and the relatives. Who can be treated according to international guidelines? Who needs a modified curative regime (and what can that be in terms of radiotherapy and/or systemic treatment) and for whom is palliation the best choice? How do we decide and what outcomes can be expected? After the session, the attendee will have a good overview of this challenging topic.
Symposium
Clinical
Head & Neck
Sunday
May 04
08:45 - 10:00
Strauss 1-2
The best management for T2N1M0 cervix cancer is…”
Alex Stewart, United Kingdom;
Remi Nout, The Netherlands
Debate
Clinical
Gynaecology
Sunday
May 04
08:45 - 10:00
Schubert
Quantitative MRI biomarkers for radiotherapy response assessment: Towards multicentre clinical trials
Lorenzo Placidi, Italy;
Nienke Sijtsema, The Netherlands
This symposium explores the role of quantitative MRI biomarkers in radiation therapy (RT) response assessment, with a focus on their validation for multicenter clinical trials. Experts will discuss the integration of biological image-guided adaptive RT, standardization of MRI sequences, and robust parameter extraction across institutions. The session will also highlight the potential of deep learning in MRI parameter estimation and the role of hypoxia imaging in clinical trials. A panel discussion will address challenges and opportunities in advancing MRI biomarkers for precision RT.
Symposium
Physics
Sunday
May 04
08:45 - 10:00
Lehar 1-3
Technical innovations in breast cancer: Optimising workflow
Joanna Kamińska, Poland;
Marianne Aznar, United Kingdom
Symposium
Physics
Breast
Sunday
May 04
08:45 - 10:00
Haydn
Reirradiation: Roles of radiation therapists in advancing patient care
Paulo Ferreira, Belgium;
Yat Man Tsang, Canada
This session will focus on enhancing the expertise of radiation therapists in reirradiation workflows, addressing challenges in treatment planning, and exploring how evolving practices are reshaping their roles. Topics will include innovative approaches to reirradiation processes, effective strategies for overcoming planning obstacles, and the broader implications of reirradiation on the practice of radiation therapists. This symposium highlights the vital contributions of radiation therapists to improving patient care in radiation oncology.
Symposium
RTT
Reirradiation
Sunday
May 04
08:45 - 10:00
Strauss 3
Brachytherapy as a boost for prostate cancer in the modern era of radiation therapy
Marcin Miszczyk, Poland;
Vratislav Strnad, Germany
The optimal indication and implementation of brachytherapy as a boost after external radiotherapy for locally advanced prostate cancer is often a subject of controversy. The aim of the symposium is to present and discuss the current issues about the indication of brachytherapy as a boost from different perspectives - from the point of view of medical physics, radiation biology and radiation oncologists, in particular the current quality of evidence of brachytherapy as a boost with regard to efficacy and side effects. In addition, the current evidence for patient selection and the possible use of artificial intelligence in prostate brachytherapy will be presented.
Symposium
Brachytherapy
Urology
Sunday
May 04
09:00 - 10:00
Stolz 1
Validation and application of autosegmentation
Charlotte Brouwer, The Netherlands;
Matteo Maspero, The Netherlands
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Physics
AI in RT
Sunday
May 04
09:00 - 10:00
Business 1-2
Haematology & Palliation
Eva Oldenburger, Belgium;
GABRIELE SIMONTACCHI, Italy
Mini-Orals are presented at one of the sessions scheduled in the two mini-oral theatres. Each author will present a 4-slide PowerPoint orally for 4 minutes, followed by 3 minutes for discussion. Sessions will be recorded and made available via the online platform and mobile app.
Mini-Orals
Clinical
Sunday
May 04
09:00 - 10:00
Stolz 2
Quality assurance
Conor McGarry, Ireland;
Volha Hertsyk, Belgium
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
Physics
Sunday
May 04
09:00 - 10:00
Business 3-4
Precision and patient-centric advances in radiotherapy practice
Karla Mooney, Ireland;
Paolo Brossa , Italy
Poster Discussions are presented in one of the sessions scheduled at the two poster discussion theatres. Each author will present a digital poster orally for 2 minutes, followed by 2 minutes for discussion. Sessions will be recorded and made available via the online platfrom and mobile app.
Poster Discussions
RTT
Positioning & Immobilisation / Skin
Sunday
May 04
10:30 - 11:30
Mahler
Transformative combined modality treatment strategies
Anthony Chalmers, United Kingdom;
Dorota Gabrys, Poland
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Interdisciplinary
Lung / Urology
Sunday
May 04
10:30 - 11:30
Plenary Hall
Head & neck 1
Erika Korobeinikova, Lithuania;
Nejla Fourati, Tunisia
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Clinical
Head & Neck
Sunday
May 04
10:30 - 11:30
Strauss 1-2
Gynaecological 1
Carien Creutzberg, The Netherlands;
MIHAI Cojocaru Laboncz, Romania
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Clinical
Gynaecology
Sunday
May 04
10:30 - 11:30
Schubert
Find the connection to transformative impact
Charlotte Robert, France;
Uulke van der Heide, The Netherlands
Proffered Papers are presented in one of the sessions scheduled in the main session halls. Each author will present orally for 7 minutes, followed by 3 minutes for discussion. Sessions will be recorded and available on-demand.
Proffered Papers
Physics
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