ESTRO 37 Abstract book

S903

ESTRO 37

patients, 21.5% of treatments involve the use of an MLC, 87% of centres use local clinical treatment guidelines, and 67% have QA/QC protocols, 42.7% of treatments use open fields. The mean number of fractions is 31 for curative, 14 for palliative and 23 for all treatments. The ratio of non-planned downtime vs. planned maintenance for linacs is 5:1, and 28.7% of centres use R&V systems. Split-course radiotherapy is practiced routinelly in all countries except Azerbaijan for H&N, cervical, prostate and lung cancers. The naming, task profile and education programmes of radiotherapy professionals are different than in the west. Conclusion Most countries need modernization of their RT infrastructure coupled with adequate staffing numbers and education programmes. Some radiotherapy practices and techniques differ significantly from those practiced in western countries. Radiation oncology training programmes need expansion and update. The profession of medical physics is officially recognized in the Russian Federation only, while the profession of RTT is not recognized and there are no formal education programmes. EP-1679 Prospective survey regarding a mobile application-based concept for supportive care in radiotherapy R.A. El Shafie 1,2 , N. Bougatf 1,2,3 , J. Debus 1,2,3,4 , T. Machmer 5 , N.H. Nicolay 1,2,4 1 Heidelberg University Hospital, Radiation Oncology, Heidelberg, Germany 2 Heidelberg Institute of Radiation Oncology HIRO, Radiation Oncology, Heidelberg, Germany 3 Heidelberg Ion Therapy Center HIT, Radiation Oncology, Heidelberg, Germany 4 Deutsches Krebsforschungszentrum dkfz, Radiation Oncology, Heidelberg, Germany 5 OPASCA GmbH, CTO, Mannheim, Germany Purpose or Objective Consumer electronics and web-enabled mobile devices play an increasing role in patient care and their use in the oncologic sector opens up promising possibilities in the fields of supportive cancer care and systematic follow-up. The present survey aims to assess acceptance and possible benefits of a mobile application-based concept for supportive care of patients undergoing radiotherapy. Material and Methods The survey was conducted among patients presenting for radiotherapy (RT) of either breast or prostate cancer. 975 patients were screened and 200 of those were smartphone users, completed the survey before starting radiotherapy and were requested to complete it once more after completion of RT. Areas covered by the questionnaire were habits of smartphone usage, technical knowledge and abilities, readiness to use a mobile application (MA) within the context of RT, possible features of the MA, timeframe of reachability via smartphone notification and general attitude towards different aspects of RT. Results Median patient age was 51 years (range 35-75). 84,7% of the participants could use their smartphones with little to no help. 76,9% had not used their smartphones in a medical context before, however the majority showed high interest in using a MA for supportive care during RT (69,3%) or after its completion as part of follow-up (76,9%). Favored features of such a MA would include

appointment-making (92,3%), collection of patient- reported outcome regarding their illness, therapy and general well-being (46,2%) and regular inquiries for the early detection of therapy-related toxicity (77,0%). The preferred usage frequency of support via MA was indicated as weekly (53,8%) or at the beginning of RT and its completion (23,1%) and was thus higher than the preferred frequency of consultations with a physician during RT (30,8% weekly, 46,2% beginning and completion of RT, 46,2% only as required). Conclusion Mobile applications for supportive care and follow-up of oncologic patients represent a promising field in the development of new patient-centered therapy concepts. The use of a MA in oncology is not quite widespread yet, however interest and acceptance among patients, especially in the field of radiation oncology is high. Compliance and consequently the success of this approach are highly dependent on the ease of use and safety of the respective application. The present survey serves as basis for further clinical trials in this field. EP-1680 Australian private practice rates of hypofractionated radiation therapy for early breast cancer P. O'Brien 1 , K. Neville 2 , M. Dreosti 3 , D. Blakey 4 , M. Latham 5 , S. Young 4 , M. McFadden 6 1 Genesis Cancer Care, Radiation Oncology, Gateshead, Australia 2 Genesis Cance Care, Radiation Oncology, Gateshead, Australia 3 Genesis Cancer Care, Radiation Oncology, Adelaide, Australia 4 Genesis Cancer Care, Radiation Oncology, Melbourne, Australia 5 Genesis Cancer Care, Radiation Oncology, Perth, Australia 6 Genesis Cancer Care, Radiation Oncology, Sydney, Australia Purpose or Objective Based on clinical trials involving more than 7,000 women, Cancer Australia guidelines recommend that hypofractionation should be considered for women over the age of 50 years with early stage breast cancer. Adoption of these recommendations has been variable. To date the only large scale analysis of fractionation practices from public hospitals in New South Wales (NSW) demonstrated 45% of patients received a hypofractionated schedule. Genesis Cancer Care is the largest private provider of radiation therapy services in Australia accounting for approximately 40% of all patients treated. This study aimed to investigate variation in hypofractionation across 4 states – Victoria, Western Australia, South Australia and NSW. Material and Methods The electronic medical record (MOSAIQ™) was interrogated to identify patients with T1 and T2, N0 breast cancer and receiving radiation therapy as adjuvant therapy between 2014 and 2016. The variables extracted included fractionation, laterality, patient age, treatment centre, radiation oncologist, distance from treatment centre, T stage, tumour grade, histopathological subtype (morphology) margin status, LVI, receptor status (ER, PR, Her2) and the use of chemotherapy. Summary statistics, univariate and multivariate modelling were then applied to the dataset.