Programme

Overview: The definition of safety margins around the CTV an essential step in radiotherapy. Depending on the treatment methods, the definition of these margins is based on good practice rules or formulas ensuring a given dosimetric coverage of the CTV for a certain number of patients. These margins have historically been defined for external radiotherapy with high-energy X-rays. During this symposium, we will re-explore the relevance of these safety margins for treatment methods that differ more or less strongly from the conditions for which the margins were defined/calculated at the start. What about the relevance of margins for online adaptive radiotherapy with MRI? Can we greatly reduce them, thanks to the information gleaned from imagery? For proton therapy, the weakness of margining models is well documented. How to compensate it? Finally, brachytherapy also requires a specific approach to secure target coverage, since the possibilities to steer dose gradients are substantially different from in EBRT

Overview: In this debate, the importance of robotic linacs for stereotactic body radiotherapy (SBRT) using of non-coplanar beam angles and tumor tracking in efficient workflows will be discussed to support the motion. In a rebuttal, the need for multiple photon and electron energies as well as large field size in routine use, will speak in favor the C-arm linac. Besides, non-coplanarity is also possible on C-arm linacs and other specific technologies (e.g. double stacked MLC, imaging, AI-guidance) could be used on them. O-ring gantry systems will be discussed as next as another form of specialized system which, combined with high-quality imaging and automated AI-guided workflows enables seamless online adaptive radiotherapy. The second rebuttal will give an overview of the long-lasting evidence from the majority of patients treated on C-arm linacs with similar geometric and dosimetric accuracies compared to specialized systems.

Overview: The modern oncology is characterized by a personalized approach and the physicians, in the daily practice, should propose to the patients the best treatments considering not only the classical oncological outcome such as local control, disease free survival and overall survival but also the quality of life after treatment, especially in terms of late side effects. In this symposium toxicity assessment and supportive care before, during and after brachytherapy procedures (Interventional Radiotherapy) will be discussed. The lectures will be focused on different tumors: gynecological, breast, head & neck and skin cancers and different strategies to reduce toxicity and improve patient compliance will be discussed in multidisciplinary approach involving not only interventional radiation oncologists but also psychologist. In addition, the role of new technologies to improve patients’ psychological profile will be highlight

Overview: In this session the speakers will demonstrate how RTTs can be involved in performing scientific research. This can be a very practical role, like being involved in implementing scientific developments into the clinic so that treatments are optimized and patients can profited from optimal radiotherapy. Or this can be a role in uplifting patient accrual in scientific studies or even performing and/or leading scientific research. At the end of this session you might be inspired to play a role in translating science into practice at your own clinic.

Overview: 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 not be recorded.

Overview: 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 not be recorded.

Overview: 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 not be recorded.

Overview: 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 not be recorded.