ESTRO 2024 - Abstract Book

S5464

RTT - Patient care, preparation, immobilisation and IGRT verification protocols

ESTRO 2024

We collected data from 457 fractions for the initial laser/tattoo questionnaire and answers from 2692 and 2561 fractions were collected for the first and second question, respectively, from the main questionnaire.

Figure 1 shows the user-satisfaction for the SG pre-positioning over time, in monthly intervals. The figure shows two tendencies, the first we call a training period. It is reflected in the initial high number of “Worse” answers (blue) that drop to a constant lower level at the second collection after implementation. Similarly, the answers for “Better” (green) see an initial rise between the first and second data collection, with an all-time peak at the second collection point. We theorise this is a learning period where the treatment staff adjust and become comfortable with the new SG system. The second tendency we call an adaptation period, demonstrated in Figure 1 by the green (“Better”) and orange (“The same”) line decreasing and increasing, respectively, at the same rate. This is theorised to be the treatment staff adapting to the SG system and therefore the novelty wears off and the responses drift from “Better” to “The same”. Combined, Figure 1 shows that, even with the subjectivity of the answers, the user satisfaction with the SG pre-positioning is either “The same” or “Better” as compared to a laser/tattoo setup.

Figure 2 shows the percentage of treatments where manual shifts were performed by the treatment staff before and after the SG implementation. We see a reduction from approximately 60% to 15% of patients needing a manual adjustment when using the SG system. This represents an improvement in terms of reduced physical labour for the treatment staff.