Modeling of Static, Switched, and RF Fields in the Body for MRI

In MRI, electromagnetic fields with frequencies from DC to hundreds of MHz and with magnitudes from under one microTesla to several Tesla are used to manipulate the magnetic moments of atomic nuclei within the human body. These fields interact with tissues in numerous ways, resulting in both engineering challenges to maintain image integrity, and safety considerations. Field calculations can be used as tools to both design improvements to the quality of MRI in the presence of tissue-induced field distortions and to ensure patient safety. This requires accurate representation of the fields, realistic biological models, and adequate consideration of MRI physics