Jackson, GD; Kuzniecky, RI; Pell, GS
"Principles of magnetic resonance imaging"
IN: Magnetic resonance in epilepsy : neuroimaging techniques / Kuzniecky, Ruben I; Jackson, Graeme D (Eds)
Burlington MA : Elsevier Academic, 2005
- This chapter focuses on the principles of magnetic resonance imaging (MRI) from the perspective of nonphysicists and clinical users. Magnetic resonance (MR) is a collection of techniques that enables many aspects of the structure, biochemistry, and function of the brain to be identified completely and noninvasively. The general principle of generation of an MR image is that if a lesion is not seen on a particular MR study, it does not mean that it cannot be seen through other MR techniques. The chapter discusses some basic principles of MR physics. The noninvasive nature and high spatial resolution of MR techniques hold great promise for the investigation of many aspects of brain functions, both in normal states and in pathological conditions. The technique of MRI is based on the intrinsic properties of atomic nuclei of charge, spin, and magnetism. Moreover, the extremely low energy of the radiofrequency electromagnetic radiation employed in MR studies is far less likely to cause significant biological damages.
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