Abstract

Abstract— Till date we have seen that many imaging techniques have been used inhealth care techniques for determining the brain related diseases such as CTscan or MRI Scan etc. Since the use of unwanted devices such as mobile phonesetc. have increased rapidly in last decade, so the increase in the victims ofbrain tumor has been observed tremendously. Depending upon the abnormalitiesdepicted by the brain tumor it can be either considered as primary orsecondary. The theoretical study to be done on the MRI image is a very lengthyprocess and can be prone to errors and inefficiency. The major concern indetermining the brain tumor is proper technique of analysis of MRI image wherehuman intervention is deeply required. This type of difficulty can be recoveredby the Computer-aided diagnosis (CAD) scheme have capability of improve thediagnosis and less time required for accurate result The main objective of thisreview paper is to define the various previously proposed detection techniquesfor the brain MRI images..