The book covers all aspects of one of the most advanced magnetic resonance imaging techniques, namely Diffusion Tensor Imaging (DTI) and Fractional Anisotropy (FA) values in early Parkinson s disease (PD) patients. It provides step-by-step descriptions of DTI and its use in the early diagnosis of Parkinson s disease by using FA values at several grey and white matter regions of the brain with helpful MRI DTI images. It includes clear flow charts with MRI DTI imaging protocol for Parkinson s disease to aid in early diagnosis and treatment. The book covers essential information on anatomy and pathology in Parkinson s disease and includes dedicated chapters on diffusion tensor imaging and FA in Parkinson s disease. Additionally, it covers the role of magnetic resonance imaging in Parkinson s disease with routine findings for Parkinson s disease in MRI, followed by advanced imaging biomarkers and predictors in Parkinson s disease.