Respiratory self-gating using 3D half-echo stack-of-stars TrueFISP (TrueSTAR)

In this work we present a retrospective respiratory self-gating technique for 3D radial hybrid stack-of-stars half-echo balanced steady-state free precession (bSSFP) sequence. The adapted radial bSSFP sequence is based on golden angle projection reordering scheme and half-echo readout. Application of very short TR was beneficial in elimination of banding artifacts known from standard bSSFP techniques, as well as for improved visualization of pulmonary vessels and tissue. We present in vivo application of the self-gated reconstruction of lung images resulting in decreased blurring and improved delineation of pulmonary structures.

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