Exact Simulating of Human Arteries using Lumped Model and Probing Constriction in Femoral and Carotid Arteries

Abstract

Problem statement: Modeling Human cardiovascular system was always an important issue from long past because by doing such modeling, investigation in cardiovascular system and its abnormities would be simpler. One of the most effective ways to do such modeling is using lumped method (Electrical analogy). Approach: Lumped method was used for simulating a complete model in this approach. A 36-vessel model was chosen to make equivalent circuit of lumped method from it. This complicated circuit includes equivalent segment for arteries, pulmonary, atrium, left and right ventricles. Furthermore, in this complex circuit some additional points were considered to improve this method. Some of the most important considerations to advance this modeling method was exact simulation of right and left ventricles pressures, division of ascending aorta, femoral carotid in respect into 27, 10, 31 segments and adding peristaltic motions of vessels in descending arteries (thoracic to femoral) as a further pressure supplier respect to ventricles. Results: As a result of these considerations the pressure graphs from our complex circuit in descending arteries were so close to real graphs from biological texts which were earned by advanced instruments. Conclusion: citation of current modeling would be verified strongly. Consequently obstruction in femoral and right common carotid was probed with this complicated circuit and its results were shown in this study.