S2931
RTT- RTT operational practice and workflow innovations
ESTRO 2026
Digital Poster Highlight 3090
Feasibility and patient experience of a same-day plan-and-treat SABR workflow on MRI-Linac: pre- and post-treatment surveys. Nienke Weitkamp, Sonja Verheijen, Daphne Damhoff, Omar Bohoudi, Miguel A Palacios, Claire van Vliet, Anna M.E. Bruynzeel Radiotherapy, AmsterdamUMC, Amsterdam, Netherlands Purpose/Objective: Same-day MRI-guided stereotactic ablative body radiotherapy (MRIgSABR) is technically feasible, for instance for lung tumors (1). However, patient perspectives and workflow optimization across other tumor sites have not yet been evaluated. This study investigated the feasibility and patient experience of a highly complex same-day plan-and-treat, ‘One Stop Shop’ (OSS) workflow on the MR-Linac MRIdian (ViewRay Systems), supported by pre-and post- A preliminary survey among the general MRIdian patient population assessed waiting times between simulation and first treatment, travel burden, and the desirability of an OSS option for treatment. Based on these results, a streamlined same-day plan-and-treat workflow was developed, aiming to complete consultation, simulation, planning, and adaptive treatment within five hours. This workflow is shown in figure 1. Dedicated planning templates for renal and pancreatic tumor sites were implemented to minimize total procedure time. Patients were eligible for OSS when treated with a single fraction, or OSS was applied for the first fraction of longer schedules. After treatment, patients completed a satisfaction survey evaluating their experience and perceived efficiency. treatment surveys. Material/Methods:
Notably, patients required less prompting at CT than at treatment suggesting that due to the time gap between sessions, further training on day 1 of treatment may be required. Conclusion: Previously, patients that have been unable to achieve breath hold using auditory cues have been excluded from vDIBH and have been scanned and treated in free breathing. The light system allows optimal treatment to all patients who require breath hold radiotherapy. More training or the addition of further equipment who improve the success and accuracy of treatment for those who require further support. Keywords: Inclusivity, DIBH
Figure 1: OSS workflow Results: In the initial survey (n=19), 58% of patients reported
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