Oliver Bieri1,
Klaus Scheffler1
1Radiological Physics,
Only
recently, a new type of steady-state free precession (SSFP) sequence was
introduced, termed chimera SSFP. The chimera sequence consists of two
alternating SSFP kernels: odd TR-intervals feature a balanced SSFP (bSSFP)
type of protocol, whereas even TR-intervals undergo gradient dephasing
(non-balanced SSFP) and hence the name. In contrast to the recently proposed
sequence, the non-balanced SSFP kernel is played out with minimal TR →
0 and the constraint of identical flip angles for both kernels is discarded.
Frequency response profile modifications achievable with the extended chimera
sequence are discussed.