ESTRO 2023 - Abstract Book

S2049

Digital Posters

ESTRO 2023

ISF measurement for the 7 women was 4.8cm (range 2.5:9cm). The thicker S4A bra eliminated the ISF for 7/7 women. The thinner Chabner XRT bra eliminated the ISF for 4/7 women; for the other 3, the mean ISF with the Chabner XRT bra was 4.1cm (range 2:6cm). Visibility of the underlying breast was greater for the Chabner XRT bra.

Conclusion Using Eve, upright set-ups for breast RT are likely to prove comfortable, particularly if arms-down positions are realized. RT bras are effective in reducing/eliminating ISF for upright body positions. Further research must focus on (1) reducing upright set-up errors by further stabilizing the upper body & (2) investigating upright internal anatomy for various arm positions, and the impact of this anatomy on proton/photon treatment plans.

PO-2279 Preliminary analysis of subcutaneous tissue fibrosis and dose-volume relationships for limb sarcoma

R. Simoes 1 , S. Gulliford 2 , B. Seddon 3 , M. Robinson 4 , S. Forsyth 5 , L. White 5 , H. Dehbi 6 , P. Gaunt 7 , A. Hughes 7 , E. Miles 8 , P. Hoskin 9 , K. Harrington 10 , A. Miah 11 1 The Institute of Cancer Research; The Royal Marsden Hospital; University College London Hospitals; RTTQA group., Radiotherapy, London, United Kingdom; 2 University College London Hospital NHS Foundation Trust, Radiotherapy physics, London, United Kingdom; 3 University College London Hospital NHS Foundation Trust, Sarcoma Unit, London, United