S2730
RTT - Patient preparation, immobilisation, and verification protocols
ESTRO 2026
by assessing their relevance within the SGRT pathway. Descriptive statistical methods were applied. Results: There were 52,202 RTE reported nationally for this period. After selection, 505 reports met the study criteria and were included within the analysis. Reports were categorised based on the described role SGRT played in an RTE. SGRT was found to be cited as:A method of detection and mitigation of RTE (63 reports)A safety/corrective tool employed to prevent RTE recurrence (46 reports)Associated/attributed with the generation of an RTE (396 reports)Figure 1 illustrates where SGRT either detected an RTE or was used as safety/corrective tool. SGRT detected events most frequently during patient treatment set up relating to incorrect recording of patient specific information (54.0%, n=34/63). SGRT was most often employed to prevent RTE recurrence as an aid for patient positioning and monitoring (47.8%, n=22/46).
Conclusion: By adding a structure defining the minimum
acceptable bladder volume, RTTs make more efficient on-line image assessments and require less on-line support from physicians, without increasing off-line review by physicians. Keywords: anatomy verification, scripting Proffered Paper 2875 Keeping an eye on SGRT – evidencing SGRTs role in patient safety John Rodgers, Helen Best, Cristiona Logan Medical Exposures Group, UKHSA, London, United Kingdom Purpose/Objective: The emergence of surface guidance radiation therapy (SGRT) as a valuable contributor to patient safety is well recognised1. Despite this, only limited information has been published regarding the nature of adverse events SGRT may prevent2.This study interrogated radiotherapy events (RTE) reported to a national event learning system (ELS) over five years3, with the aim to characterise and provide thematic insights into the role SGRT plays in detecting and preventing RTE, and potential areas of risk its introduction may cause. Material/Methods: A retrospective analysis of data voluntarily reported between January 2020 and December 2024 within a national ELS was completed. RTE were filtered using comprehensive SGRT search parameters and selected
Figure 2 demonstrates radiotherapy pathway points where SGRT was associated with the generation of an RTE. The most frequent involves plan export and data preparation (n=149).
A high proportion of reports associated SGRT with RTE generation (78.4%, n=396/505). This may reflect the decreased likelihood of staff reporting events where SGRT performed as expected in detecting/mitigating RTE versus occasions where SGRT is identified as a contributing factor. RTEs generated by SGRT were generally of low severity and often associated with the
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