Abstract #3542
High-resolution zero echo time lung imaging
Fabio Gibiino 1,2 , Laura Sacolick 3 , Anne Menini 4 , Luigi Landini 1 , and Florian Wiesinger 4
1
University of Pisa, Pisa, PI, Italy,
2
GE
Global Research, Munich, Bavaria, Germany,
3
GE
Heathcare, Munich, Germany,
4
GE
Global Research, Munich, Germany
A 3D radial zero-TE sequence similar to the
Rotating-Ultra-Fast-Sequence was implemented and
optimized for high-resolution structural imaging of the
lungs. The pulse-and-acquire sequence scheme achieves a
nominal echo time equal to zero with repetition time of
about one millisecond. The minimal gradient ramping kept
the sequence free from eddy current artifacts. A
prospective triggering on the respiration signal was
used to avoid motion artifacts. The receive bandwidth
was chosen to obtain the best compromise between
resolution and signal-to-noise ratio. 3D datasets of the
lung structures at ~0.9mm isotropic resolution were
acquired on volunteers in ~9min scan time.
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