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Starter sequence for steady‐state free precession imaging

The dynamic equilibrium exploited by balanced steady‐state free precession imaging develops slowly because its formation is dependent on both spin–spin and spin–lattice relaxation times. Attempting to image before steady state is established results in artifacts due to transient signal oscillations. Using a starter sequence to precondition the spin system can significantly reduce the delay before imaging. An improved design for a steady‐state starter sequence is presented. The new sequence has the advantage of uniformly exciting the steady‐state response for all resonance offsets and can be phase cycled to suppress banding artifacts. Magn Reson Med 53:919–929, 2005. © 2005 Wiley‐Liss, Inc.