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Adiabatic water suppression using frequency selective excitation

✍ Scribed by Robin A. de Graaf; Klaas Nicolay

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
804 KB
Volume
40
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

A new method for B~1~‐insensitive water suppression using adiabatic RF pulses is described. The transition zone of the inversion profile of adiabatic full passage (AFP) pulses is used for frequency‐selective excitation followed by dephasing of the excited water with magnetic field gradients. Several im provements of AFP pulses, which also have implications for other applications, are described. The technique was evalu ated by simulations based on the Bloch equations (including relaxation), in vitro experiments and an in vivo verification on neonatal and adult rat brain.

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