Lung Tumour movemente simulator.

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First Page Settings Open Access Article Open Source 3D Printed Lung Tumor Movement Simulator for Radiotherapy Quality Assurance by Darío R. Quiñones 1, David Soler-Egea 1, Víctor González-Pérez 2, Johanna Reibke 1, Elena Simarro-Mondejar 1, Ricardo Pérez-Feito 3, Juan A. García-Manrique 4, Vicente Crispín 2 and David Moratal 1,* [OrcID] 1 Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain 2 Department of Radiophysics, Fundación Instituto Valenciano de Oncología, 46009 Valencia, Spain 3 Thermodynamics Department, Universitat Politècnica de València, 46022 Valencia, Spain 4 Institute of Design for Manufacturing and Automated Production, Universitat Politècnica de València, 46022 Valencia, Spain * Author to whom correspondence should be addressed. Materials 2018, 11(8), 1317; https://doi.org/10.3390/ma11081317 Received: 29 June 2018 / Revised: 19 July 2018 / Accepted: 26 July 2018 / Published: 30 July 2018 (This article belongs to the Special Issue Special Issue of the Manufacturing Engineering Society (MES)) Download PDF Browse Figures Cite This Paper Abstract In OECD countries, cancer is a leading cause of death, with lung cancer being one of the most aggressive. There are several treatments for lung cancer, with radiotherapy being an effective and minimally invasive option for patients. However, it has associated challenges due to the moving target tumor. By effectively tracking a tumor and reducing target irradiation margins, the side effects of radiotherapy can be reduced. This paper presents a custom electromechanical system that tracks lung tumor movement. To achieve this, a hysteresis loop of human lung movement during breathing was studied to obtain its characteristic movement equation. The system is controlled by an Arduino, stepper motors, and a customized 3D printed mechanism to follow the characteristic human breathing pattern, resulting in an accurate trajectory. The developed device helps verify individualized radiation treatment plans and improves radiotherapy quality assurance procedures.