  Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are
versatile tools with broad applications from physics and chemistry to geology
and medical studies. In this mini-review, we consider the concepts of NMR and
MRI technologies from their fundamental origins to applications in medical
science. We start from a quantum mechanical basis and consider the significant
importance of NMR and MRI in clinical research. Furthermore, we briefly
introduce different types of NMR systems. We also investigate some of the most
important applications of MRI techniques to provide valuable methods for
visualizing the inside of the body and soft tissues.
