© Springer International Publishing Switzerland 2015 S.C. Satapathy et al. (eds.), Proc. of the 3rd Int. Conf. on Front. of Intell. Comput. (FICTA) 2014 501 – Vol. 2, Advances in Intelligent Systems and Computing 328, DOI: 10.1007/978-3-319-12012-6_55 Modeling of Thorax for Volumetric Computation Using Rotachora Shapes Shabana Urooj 1 , Vikrant Bhateja 2 , Pratiksha Saxena 3 , Aime lay Ekuakille 4 , and Patrizia Vergalo 4 1 School of Engineering, Gautam Buddha University, Gr. Noida (U.P.), India 2 Department of Electronics and Communication Engineering, SRMGPC, Lucknow (U. P.), India 3 School of Vocational Studies & Applied Sciences, Gautam Buddha University, Gr. Noida (U.P.), India 4 Department of Innovation Engineering, University of Salento, Lecce, Italy {shabanaurooj,bhateja.vikrant}@ieee.org Abstract. This paper presents the scope of mathematical modeling by using uncommon geometric shapes for the computation of thoracic volume. The modeling has been done for Rotachora shapes for estimation and computation of fluid volume present in the thoracic area. Proposed extended model based approach demonstrates the scopes of its sensitivity in terms of volumetric variations with the act of breathe. The act of breathe involved inspiration and expiration states. New models have been constructed to compute the thoracic volumes and their variations are shown with respect to the thoracic impedances. Four dimensional Rotachora shapes are taken into consideration. Human thorax is considered as cubinder in the first stage and as duo cylinder in the second phase under Rotachora shape category. It is observed that the volumes are rhythmically varying with the act of breath for the considered thoracic area along with the varying thoracic impedances. The obtained results validates that the chosen models are closely following the act of breath significantly and hence the obtained result could be utilized for clinical purposes. Keywords: thoracic impedance, thoracic volume computation, rotachora, cubinder, duo cylinder, pulmonary. 1 Introduction There has been increasing interest using model based approach to understand and monitor the pulmonary disease viz. pulmonary edema. Modeling refers to the measurement or estimation of the amount of fluid present in the lungs related to the physiology and the work of breathe with respect to lungs. S. Urooj et al. developed a cylindrical model of thorax for estimating fluid volume by using anthropometric dimensions [1]. Several numerical simulation based methods for estimation of