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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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