MRI has been an active research area during the past decade. The feasibility of detecting neuronal currents by utilizing magnetic resonance imaging (MRI) is a topic that is still under debate. The direct detection of dendrite activation with MRI would allow the active mapping of the human brain. Neuronal mapping with MRI would provide a noninvasive procedure for mapping the active neural pathways in the human brain. This book provides insight into the expected MRI signal feedback projections that can be created by dendrite chain activation. Along with the fundamental theory of MRI, multiple models of sampling techniques covering the total signal strengths are presented. Thus this book can be implemented as a starting point for future research.