ESTRO 38 Abstract book

S627 ESTRO 38

Conclusion Regardless of grouping approach, number of patient workflows could be aggregated into a tenth of initial number of individual workflows for the least conservative correlation coefficient. Even fewer groups could be identified when treatment intent was disregarded, but only for a reduced criteria of group similarity. It seems feasible to create an SD-model over the RT-process with a manageable number of aggregated workflows of high similarity without having to compromise on treatment intent. Having such reduced number of workflows at hand may also be of assistance when scheduling RT. PO-1130 Development of an e-learning program to enhance and maintain the knowledge of experienced RTT’s J. Gornitzka 1 , L. Akselbo 1 , M. Torp 2 , V. Matthäi 2 , T. Bjørn 3 , K.L. Gottlieb 3 1 Odense University Hospital, Department of Oncology, Odense, Denmark ; 2 Unit for E-learning, Region of Southern Denmark, Vejle, Denmark ; 3 Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark Purpose or Objective Radiotherapy Planning (dosimetry) is a highly specialized area of radiotherapy and clinical oncology ensuring accurate radiation treatment to cancer patients. In the radiotherapy clinic it is difficult to find time and space to enhance and maintain knowledge about dosimetry among the experienced radiation therapist (RTT) working only with treatment delivery. The lack of daily experience with dosimetry can potentially impact their confidence and clinical skills. The aim of this project was to develop an e- learning program for experienced RTT’s and evaluate the impact on the program on their clinical work. Material and Methods An e-learning program was developed in collaboration between department physicists, RTT’s and the regional unit for e-Learning. The e-learning program consists of four main topics: Patient simulation, image modalities (CT, MR, PET), dose planning and plan control (see example in Figure 1). The four topics explain the pre- treatment-workflow. The self-perceived didactic value of the program was evaluated using a face validated (5 persons) questionnaire with a 4-point Likert scale, which was sent immediately after completion of the e-learning. The questionnaire referred to the applicability of the course within the four topics, as well as their degree of understanding the workflow among the different professions in the pre- treatment. The evaluation questionnaire was repeated three months after to measure whether the RTT’s used their knowledge from the course in their clinical work.

Results The response rate among the 47 RTT’s in the first questionnaire was 87 %, and 83 % at follow up questionnaire 3 month after. 88 % of the responders strongly agreed or agreed in having enhanced new knowledge about pre-treatment (Figure 2 A). In the group of RTT’s with 0-10 years of experience (n=10) 50 % strongly agreed that the e-learning had given them new knowledge, while 22 % of the group with more than 10 years of experience (n=31) strongly agreed in this question. The RTT’s responded that the two chapters about image modalities and dosimetry had the highest applicability to their clinical work. 98 % strongly agreed or agreed to this. All responders (100 %) strongly agreed or agreed that the e-learning gave them an understanding of the pre- treatment workflow. After three months 79 % had used this knowledge about workflow in their clinical work. After three month 72 % of the responders used their overall enhanced knowledge about pre-treatment in their clinical work (Figure 2 B). In the group with 0-10 years of experience 70 % had used this knowledge, compared to 78 % in the group of the more experienced RTT’s .

Conclusion The use of an e-learning program for experienced RTT’s in the treatment site is an effective method to enhance and maintain knowledge about dosimetry and the pre- treatment workflow.

Poster: RTT track: Risk management/quality management

PO-1131 Quality assurance of the pretreatment plan review in radiotherapy S.F. Huang 1 , H.W. Cheng 1 , C.Y. Kuo 1 , C.C. Chang 1 , L.J. Chen 1 , J.T. Tsai 1 1 Shuang Ho Hospital- Taipei Medical University, Radiation Oncology, New Taipei City, Taiwan