Romain Nicolas Froidevaux1, Markus Weiger1, David Otto Brunner1, Bertram Jakob Wilm1, Benjamin Emanuel Dietrich1, and Klaas Paul Pruessmann1
Often used for the imaging of compounds with short relaxation times, 3D
center-out sequences performing broadband excitation on a ramped-up strong
gradient provide very short acquisition delays and high bandwidth. In turn,
data located around the k-space center is missed and needs to be recovered. Different approaches, like algebraic
ZTE, WASPI or PETRA are used
today. An important but still open question is how the relation of the deadtime
and the T2s involved affect image quality. We show that critical situations
occur for similar values of deadtime and T2, frequently encountered when
imaging ultra-short-T2s in solid tissues or hardware parts.
