Abstract
The raw MR signal, before computer processing, is called free induction decay (FID) and is generated by the transverse component of magnetization, Mxy (see Chap. 5). Since Mxy rotates in the xy plane, it is an oscillating magnetic field, and as such it induces the flow of electric current in a coil. Thus, through a coil or antenna the MR signal is transformed into an electric signal that describes a sinusoidal time course with rapid damping (Fig. 19).
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© 2009 Springer-Verlag Berlin Heidelberg
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(2009). Free Induction Decay. In: Clinical MR Imaging and Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-78023-6_12
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DOI: https://doi.org/10.1007/978-3-540-78023-6_12
Publisher Name: Springer, Berlin, Heidelberg
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