Short‐TR, Coherent, Gradient Echo Imaging

Abstract When a spin system is repeatedly disturbed by a fast repetition of RF pulses, the transverse magnetization after each new RF pulse approaches a steady‐state value which is smaller than the thermal equilibrium value. The spin system takes a finite number of pulses before this steady‐state is reached in a time that depends on both the T1 of the tissue and the flip angle of the RF pulse. The focus of this unit is on understanding the …