Mimics is a tool for the visualization and segmentation of CT/MR images and 3D rendering of segmented objects. It also provides an interface to create FEM meshes. In this tutorial, we will first focus on reading and writing images. We will then segment the images using the various techniques, improve the quality of segmentation using mask tools, and obtain a 3D object. The 3D object will be stored in various 3D formats and then will be FEM meshed, and the FEM mesh will be refined globally and locally.