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MRT-Physics

Lamour-Freuqenz (5)

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  • Larmor equation (F) = precessional frequency = K x B0 (K = gyromagnetic ration; B0 = strength of static magnetic field)
  • Larmor frequency of hydrogen at 1 Tesla = 42 MHz
  • Larmor frequency of hydrogen at 1.5 Tesla = 63 MHz
  • T1 = time for Mz (longitudinal magnetisation) to recover to 63%
  • T2 = time for Mxy (transverse magnetisation) to decay to 37%