ESTRO 2022 - Abstract Book

S1650

Abstract book

ESTRO 2022

This single centre study although small is original and provides an insight into both Diagnostic and Therapeutic Radiographers knowledge and skills in SGRT. To date reported training programmes for Radiographers have lacked a pre-training baseline assessment, and thus it can be difficult to assess the real impact and success of these programmes once complete. Our centre faces the additional challenge of being a new purpose built PBD with minimal test cases available for training. Therefore, the results from the survey will be invaluable to inform our training programme and the rollout of SGRT. The training will be tailored utilising approaches requested by the Radiographers and will build upon their SGRT knowledge and skills reported in the survey. The failure/success of the SGRT training and implementation will be surveyed again once all 21 staff complete the programme.

PO-1860 Implementation of RTT-led workflow for CBCT-guided online adaptive radiotherapy in head and neck

P. Darby 1 , J. Fox 1 , A. Bromiley 1 , C. Burnett 2 , N. Munn 2 , N. Redgwell 2 , J. McLellan 1 , R. Moleron 3

1 Aberdeen Royal Infirmary, Radiotherapy Physics, Department of Bio-Medical Physics, Aberdeen, United Kingdom; 2 Aberdeen Royal Infirmary, Department of Radiotherapy, Aberdeen, United Kingdom; 3 Aberdeen Royal Infirmary, Department of Oncology, Aberdeen, United Kingdom Purpose or Objective A new CBCT-guided online adaptive radiotherapy (ART) capable linear accelerator (LINAC) will be delivered to Aberdeen Royal Infirmary in February 2022, with head and neck cancer (H&N) as the first ART tumour site. Upon acceptance focus will inevitably be on the new technology training and refining the ART workflow and as a result centres often experience a delay before moving to a fully RTT-led service. Therefore, an in-house training programme has been designed to enable the workforce to acquire the skills required to independently deliver ART in advance of the system being clinically available. Materials and Methods An in-house training programme has been developed to train RTTs to safely and effectively deliver ART. The training package consists of in-house video presentations on contouring, plan evaluation, and CBCT evaluation in the H&N delivered by a clinical oncologist and presentations on inverse planning and plan evaluation in the H&N from a treatment planning perspective. Practical experience and assessment has been achieved using the CBCTs and treatment plans of 12 previously treated H&N patients. Competency in contour evaluation is achieved by RTTs assessing and editing planning contours deformed onto CBCTs. These sessions are documented and evaluated by a clinical oncologist. Radiotherapy treatment plan comparison exercises have completed and documented with evaluation by a planning physicist. This training will be supplemented by vendor delivered application training after machine delivery. Practical training in the ART workflow will be delivered using deformable phantoms prior to the machine being available for clinical use. Results A Multidisciplinary Group including RTTs, radiotherapy physicists and clinicians have been set to assess and monitor the training needs of RTTs in order to implement RTT-led ART. A training package consisting of video lectures, practical training exercises and documented assessment has been developed. Training started 8 months before the delivery of the equipment. Clinical hands-on training will be started after commissioning of the LINAC. A transition phase with physicist and clinician presence at the treatment unit is planned for the first 3 months post implementation. Conclusion Extensive training needs to take place before the clinical implementation of RTT-led CBCT-guided adaptive radiotherapy for the treatment of head and neck cancer. RTTs require training in new skills that can be undertaken before the delivery of the hardware to facilitate capacitation. A Multidisciplinary Team approach is necessary to address training needs and grant a safe and successful implementation. 1 Réseau Hospitalier Neuchâtelois, Radiation Oncology, Neuchatel, Switzerland; 2 Réseau Hospitalier Neuchâtelois, Radiation Oncology, Neuchâtel, Switzerland Purpose or Objective Stereotaxic radiation is a therapeutic alternative for lung cancer for patients with early-stage lung cancer or oligometastatic cancer. The purpose of our study was to analyse our clinical outcomes 5 years after the implementation of the SBRT in our Dpt. Materials and Methods We present a retrospective analysis of all the patients treated with SBRT for lung lesions in our department from February 2016 to March 2021. Results We treated 53 patients, for a total of 70 lesions. Median age at diagnosis was 70 years (range: 34.9-93.2), the WHO performance status was 1 in 27/53 pts (51%), 2 in 25/53 pts (47%) and in 1/53 pts (2%). Twenty out of the 70 lesions were primary pulmonary tumors (28.6%), 32/70 were stage IV oligometastatic tumors and 18 were lesions treated without biopsy (25.7%).43/53 pts were treated on one lesion, 6/53 on 2 lesions,3/53 on 3 lesions, 1/53 on 6 lesions. The median diameter PO-1861 Pulmonary SBRT for primary or metastatic lesions: a monocentric Swiss study. S. Slimani 1 , O. Santa Cruz 2 , D. Dragusanu 1 , G. Guibert 1 , B. De Bari 1