Abstract #4847

3D Pseudo-Continuous Arterial Spin Labeling Acquisition using a High-Performance Gradient System: A Scan Time and Image Quality Assessment

Afis Ajala¹, Seung-Kyun Lee¹, Daehun Kang², Luca Marinelli¹, Desmond Teck Beng Yeo¹, and Thomas Foo¹

¹Magnetic Resonance Imaging, GE Global Research, Niskayuna, NY, United States, ²Mayo Clinic, Rochester, MN, United States

Synopsis

The maximum gradient amplitude (G_max) and slew rate (SR_max) determine the minimum number of interleaves (and total scan time) in a 3D pseudo-continuous arterial spin-labeling (3DpCASL) acquisition with a stack-of-spirals readout module for a given spatial resolution. The higher G_max and SR_maxof a recently developed head-only gradient system (MAGNUS) was utilized to reduce the total scan time of a clinical 3DpCASL acquisition by a factor of 2 compared to a similar acquisition carried out at a lower G_max and SR_max of a conventional whole-body system (CWBS) while maintaining comparable image quality.

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