Feasibility of pseudocontinuous arterial spin labeling at 7 T with whole-brain coverage

Neuro Imaging Researc

Pseudo-continuous arterial spin labeling at 7 T for human brain: Estimation and correction for off-resonance effects using a Prescan

Pseudo-continuous arterial spin labeling (PCASL) can provide best SNR efficiency with a sufficiently long tag at high fields such as 7T, but it is very sensitive to off-resonance fields at the tagging location. Here a robust Prescan procedure is demonstrated to estimate the PCASL RF phase and gradients parameters required to compensate the off-resonance effects at each vessel location. The Prescan is completed in 1–2 minutes and is based on acquisition of label/control pair-wise ASL data as a function of the RF phase increment applied to the PCASL train. It is shown that this approach can be used to acquire high quality whole-brain PCASL perfusion data of the human brain at 7T

A GRAPPA algorithm for arbitrary 2D/3D nonâ Cartesian sampling trajectories with rapid calibration

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/149498/1/mrm27801_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/149498/2/mrm27801-sup-0001-FigS1-S3.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/149498/3/mrm27801.pd