Development of blood flow and blood wall interaction simulation system using voxel data from medical images

The ability to accurately simulate human tissues will be a valuable tool to help in medical diagnosis and treatment. Generally, complex unstructured grids are used because of human tissue simulations must deal with kinetic interactions between fluids and structures. Additionally, a lot of advanced knowledge and much time are necessary to make computational grids because human tissues shapes are complex and widely varied. As tool capable of reducing the time and the trouble required for making a grid, we have developed blood flow and blood vessel interaction simulation system, which directly uses images from medical diagnosis instruments for constructing a computational grid. We developed a technique to compute wall shear stress, which is important in blood vessel diseases, and we confirmed that our system reliably computes the wall shear stress. In this paper, we present an outline of the system, some ideas, and give some examples of computing the wall shear stress and the behavior of blood flow and blood vessel interaction