Lung Tumour movemente simulator.

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first_page settings Open AccessArticle Open Source 3D Printed Lung Tumor Movement Simulator for Radiotherapy Quality Assurance by Darío R. Quiñones 1 [OrcID] , 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 (Organization for Economic Co-operation and Development) countries, cancer is one of the main causes of death, lung cancer being one of the most aggressive. There are several techniques for the treatment of lung cancer, among which radiotherapy is one of the most effective and least invasive for the patient. However, it has associated difficulties due to the moving target tumor. It is possible to reduce the side effects of radiotherapy by effectively tracking a tumor and reducing target irradiation margins. This paper presents a custom electromechanical system that follows the movement of a lung tumor. For this purpose, a hysteresis loop of human lung movement during breathing was studied to obtain its characteristic movement equation. The system is controlled by an Arduino, steppers motors and a customized 3D printed mechanism to follow the characteristic human breathing, obtaining an accurate trajectory. The developed device helps the verification of individualized radiation treatment plans and permits the improvement of radiotherapy quality assurance procedures.