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- Title
ANALIZA POPRAVKOV POLOŽAJA PACIENTA S POMOČJO EXACTRAC SISTEMA PRI GINEKOLOŠKIH KARCINOMIH.
- Authors
Selak, Boštjan; Razboršek, Anej
- Abstract
Introduction: Gynaecological cancers are among the most common cancers in women. In 2008, together with breast cancer, they accounted for 32% of all cancers in women. In addition to the surgical system and the use of chemotherapeutic agents, radiation can also be used for the treatment of gynaecological cancers. The latter requires correct positioning of the patient during irradiation and the corresponding verification of the irradiation field. To determine the correct patient position, the electronic portal imaging (EPI) or ExacTrac system with a robotic couch is often used, which, in addition to any translational movement, enables the implementation of rotational movements, in order to adjust the position of the patient throughout the entire course of radiotherapy (from the preparation to the last day of irradiation). Purpose: The purpose of this article is to present the advantages of using the ExacTrac system in the implementation of the image-guided radiotherapy (IGRT) and to analyse daily rotational movements in the verification of the patient position of female patients. Methods: We used the descriptive method, collection and analysis of foreign and domestic literature and retrospective method, i.e. drawing the data from the ExacTrac system database, in conjunction with the linear accelerator Clinac 2100, at the Institute of Oncology in Ljubljana. We processed the numerical data of 30 randomly selected female patients with gynaecological tumours treated with IMRT and 3D conformation technique at the linear accelerator Clinac 2100. The analysis included 3750 pieces of data on rotating movements during the radiation treatment in the period from 1 February to 30 August 2013. Results and discussion: The corrections of rotational inaccuracies were required in all positions of female patients. The results have shown that the largest proportion of all rotational movements was in the lateral direction, i.e. 63 %. Correction of these inaccuracies reduces deviations from the irradiation target. The use of the ExacTrac system increases the quality of patient positioning. Conclusion: An important factor that affects the efficiency of irradiation is the geometric error. IGRT represents an advanced tool for successful radiotherapy. The use of the ExacTrac system allows us to correct rotational inaccuracies and to minimise deviations between the planned and performed irradiation.
- Subjects
SLOVENIA; RADIOGRAPHY equipment; FEMALE reproductive organ tumors; RESEARCH methodology; PATIENT positioning; STATISTICAL sampling
- Publication
Bulletin: Newsletter of the Society of Radiographers of Slovenia & the Chamber of Radiographers of Slovenia, 2014, Vol 31, p52
- ISSN
0718-5551
- Publication type
Article