ESTRO 2025 - Abstract Book

S1471

Clinical – Mixed sites & palliation

ESTRO 2025

Results: The target accrual was reached in September 2024. Table 1 shows the patients’ characteristics (median age: 68.6 years, four males, the primary tumor was lung cancer in three patients and renal cell carcinoma in two). Treatment planning was successful for all five patients with six treatment sites, and all plans were deliverable. The radiotherapy completion rate (primary endpoint) was 100%. The secondary endpoint, TIC, was 44.6 (range: 34 – 54) minutes on average.

Conclusion: Palliative irradiation using dCT was feasible. Radiotherapy treatment planning using dCT in advance decreased the patients’ time spent in the department and number of visits as well as enabled radiotherapy within 1 day of the initial consultation.

Keywords: simulation-free RT, palliative radiotherapy

References: [1] Wong S, et al. Diagnostic Computed Tomography Enabled Planning for Palliative Radiation Therapy: Removing the Need for a Planning Computed Tomography Scan. Pract Radiat Oncol. 2021 Mar-Apr;11(2): e146-e153. [2] Schuler T, et al. Introducing Computed Tomography Simulation-Free and Electronic Patient-Reported Outcomes Monitored Palliative Radiation Therapy into Routine Care: Clinical Outcomes and Implementation Experience. Adv Radiat Oncol. 2020 Dec 3;6(2):100632. [3] Melissa O’Neil, et al. Diagnostic CT-Enabled Planning (DART): Results of a Randomized Trial in Palliative Radiation Therapy. Int J Radiat Oncol Biol Phys. 2024 Sep 1;120(1):69-76.

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Digital Poster Stereotactic Body Radiotherapy (SBRT) in the Treatment of Spine Metastases: An Observational Retrospective Study in a Tertiary Cancer Centre Miguel Catalo, André Pires, Olga Sousa, Artur Aguiar, Bárbara Castro, Sofia Conde External Radiation Therapy Department, Instituto Português de Oncologia do Porto, Porto, Portugal Purpose/Objective: Vertebral bone metastases are associated with pain, fracture risk, and neurological deficits [1,2]. Stereotactic Body Radiotherapy (SBRT) has demonstrated efficacy in local control (LC) and pain relief, with favourable toxicity profile