Stack-of-spirals and cones trajectories have been proposed to permit breath-hold ultrashort-echo-time (UTE) acquisitions of the human lung, although further acceleration would be valuable to permit improvements such as shorter breath-holds for respiratory comprised patients or higher spatial resolution. In this work, an accelerated UTE 3D stack-of-spirals pulse sequence was implemented using undersampled, dual-density spiral waveforms for acquisition and a SPIRiT-based algorithm for image reconstruction. Preliminary testing in healthy volunteers using 2-fold acceleration provided image quality comparable to that achieved with the original, unaccelerated pulse sequence.
This abstract and the presentation materials are available to members only; a login is required.