Fundamentals of MRI—fields and basic pulse sequences

Abstract

In this first chapter, the basic mechanisms exploited in MRI are described with the use of fundamental equations of electromagnetics, moving quickly to a classical picture of a single hydrogen (1H) nucleus (a single proton) as a spinning charged particle. From this starting point we will describe how applied magnetic fields interact with ensembles of nuclei, and what fields in what sequences can be applied to image the body.