Editorial
Copyright ©2011 Baishideng Publishing Group Co.
World J Gastroenterol. Dec 21, 2011; 17(47): 5133-5149
Published online Dec 21, 2011. doi: 10.3748/wjg.v17.i47.5133
Figure 5
Figure 5 The direction of the main magnetic field B0, is commonly placed along the z-axis and the magnetization along this axis is Mz, which at equilibrium, equals M0. Left: Multiple individual spins precessing with the Larmor frequency around the axis of B0. The spin vectors have a random, incoherent phase with respect to each other. Right: Magnetization vector Mz, which at equilibrium, equals M0 (right).