Introduction

The brain is made up of a complex network of billions of nerve cells called neurons, as well as other kinds of cells, all protected by the bones of the skull. As with all other organs, the tumor is made up of cells in the brain. Normally, cells grow, grow and aging or die, and new cells are formed instead of these cells. However, in abnormal cases, when this formation-destructive activity begins to function differently than normal, unnecessary cells begin to form, or when the cells formed are not destroyed in time, the excess cells begin to group so that a structure called the tumor appears at the organ level. Because not all tumors can be called cancer, tumors formed in the brain are called brain tumors. Primary brain tumors may be benign (meningioma, scwanoma, epidermoid dermoid cysts) or malignant (glial tumors, anaplastic multiforme and glioblastoma).
Fig1 indicates the magnetic resonance imaging (MRI) of brain. The MRI gives a perfect visualization of brain anatomic structure like deep structures, brain tissues by generating the 3D image. But for segmentation and detection of brain tumor more number of MRI scans are need to be taken for each patient. Thus to overcome the problem of manual segmentation the computer based train tumor segmentation and detection is required.