A survey on multi - modality medical image fusion

Medical imaging modalities such as magnetic resonance imaging (MRI), computed tomography (CT), positron emission tomography (PET) etc have been developed and widely used for clinical diagnosis. In brain medical imaging, MRI image shows structural information of the brain without any functional data, where as PET image describes functional information of the brain but with low spatial resolution and so on. These multi-modality images contain important information for the accurate and effective diagnosis of brain diseases. Thus, fusing various modalities of images in medical field into a distinct image with more detailed anatomical information and high spectral information is highly desired in clinical diagnosis. This work presents a detailed literature review done on image fusion and also the concepts and materials that helps for clear understanding of various fusion techniques.