ESTRO 2021 Abstract Book

S1250

ESTRO 2021

FALCON (Fellowship in Anatomic Delineation and Contouring) has been offering teaching courses with the use of the online platform EDUCASER in the field of delineation for a decade. Considering that many onsite courses have had to go online during the pandemic, sometimes in record timing, with various formats, Falcon had the advantage of years of experience in fully online teaching. In this abstract we present how an increase in the demand for participation in online courses was observed during the pandemic. Materials and Methods online courses taken in the years 2018-2020 were considered for analysis. For each year, the number of participants, origin, and level of satisfaction with the teaching by the participants were recorded. Quality assessment was performed by each participant at the end of the course, filling in a questionnaire with a 5-point Likert scale (1= Poor; 2= Sufficient; 3= Average; 4= Good; 5= Excellent) Results 10 online courses were run in the years 2018-2019 and 9 in the year 2020. On average, the number of participants was 26.3, 21.9, and 38.7 for the years 2018,2019 and 2020, respectively; with a statistically significant increase of participants in the pandemic-year (p=0.0021) (Fig.1a). Countries of origin based on continent of registration are described in Figure 1b, with a greater representation of European countries followed by Australia and Asia. Among the quality assessment questions, the overall rating of the quality of the education offered at these workshops resulted always above the score of good (weighted average=4.3). So was the overall rating for the time given for questions and discussion (weighted average=4.4) and the help support offered by the tutors had a weighted average of 4.4 as well.

Conclusion FALCON's online teaching approach has been well established over time. It reacted quickly and appropriately in a period of rapid change, adapting to new training needs. This demonstrates that virtual teaching approaches are possible by breaking down the distances that on-site courses can often generate, being sometimes difficult to travel out of the departments. Moreover, the quality of teaching is not influenced by the numbers of participants, who gave positive feedback on the interactions achieved during the sessions and in between them, thanks also to the presence of FALCON’s tutors. PO-1526 Targeted RT study: preliminary results on acute toxicity of targeted therapies and radiotherapy D. Konnerth 1 , S. Schönecker 1 , D. Reitz 1 , A. Schäfer 1 , M. Niyazi 1 , C. Belka 1 , S. Corradini 1 1 LMU Munich, Department of Radiation Oncology, Munich, Germany Purpose or Objective To date, there are very limited prospective data on the tolerability of combining targeted therapies (TT) and radiotherapy (RT). The aim of the present analysis was to evaluate the feasibility and toxicity of combining radiotherapy with concurrent targeted therapy in cancer patients in a prospective manner. Materials and Methods This prospective analysis included all patients with histologically proven cancer disease undergoing radiotherapy and a targeted therapy at our institution between 03/2020 and 01/2021 (ongoing study). Toxicity profiles of various targeted therapies were systematically recorded in order to improve the level of evidence for the concurrent administration of targeted substances together with radiotherapy. Toxicity was assessed in accordance to the National Cancer Institute Common Terminology Criteria for Adverse Events Version v5.0. Results In this preliminary analysis, a total of 115 radiation therapy series (RTs) have been concluded in 102 patients. Overall, 22 different TT substances were administered concurrently to RT (see table 1) and a wide variation of different anatomic sites were treated. 2 RTs (1.74 %) were administered to the head and neck region, 18 RTs (15.65 %) to the central nervous system, 45 RTs (39.13 %) to the chest, 23 RTs (20.0 %) to the breast, 22 RTs