ESTRO 2024 - Abstract Book

S4243

Physics - Intra-fraction motion management and real-time adaptive radiotherapy

ESTRO 2024

Conclusion:

The real-time surface image coverage and DIBH-signal accuracy were minimally affected by camera occlusion and couch translation in practical clinical settings. The DIBH treatment technique showed a significant reduction of absorbed dose to the heart and LAD compared to FB using TomoDirect TM radiotherapy. These results demonstrate the feasibility and dosimetric advantage of combining SGRT and DIBH with TomoDirect TM on the Radixact® ring gantry system for breast cancer treatments.

Keywords: Tomotherapy, Ring gantry bore, DIBH breast cancer

References:

1. Shah, C. et al. Cardiac dose sparing and avoidance techniques in breast cancer radiotherapy. Radiotherapy and Oncology (2014) doi:10.1016/j.radonc.2014.04.009.

2. Darby, S. C. et al. Risk of ischemic heart disease in women after radiotherapy for breast cancer. N Engl J Med 368, 987–98 (2013).

3. Al ‐ Hallaq, H. A. et al. AAPM task group report 302: Surface ‐ guided radiotherapy. Med Phys 49, (2022).

4. Franco, P. et al. TomoDirect: An efficient means to deliver radiation at static angles with tomotherapy. Tumori Journal 97, 498–502 (2011).

1238

Digital Poster

Dosimetric impact of motion management techniques for radiotherapy of ventricular tachycardia

Annika Mannerberg 1 , Martin P Nilsson 2,3 , Anneli Edvardsson 1,4 , Kristin Karlsson 5,6 , Jesper van der Pals 7 , Sofie Ceberg 1

1 Medical Radiation Physics, Department of Clinical Sciences Lund, Lund University, Lund, Sweden. 2 Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden. 3 Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden. 4 Radiation Physics, Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden. 5 Karolinska University Hospital, Section of Radiotherapy Physics and Engineering, Department of Medical Radiation Physics and Nuclear Medicine, Stockholm, Sweden. 6 Karolinska Institutet, Department of Oncology-Pathology, Stockholm, Sweden. 7 Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden

Purpose/Objective: