A constrained slice-dependent background suppression scheme for simultaneous multislice pseudo-continuous arterial spin labeling.

ABSTRACT:

Purpose

To present a constrained slice-dependent (CSD) background-suppression (BS) scheme in 2D arterial spin labeling (ASL) using simultaneous multislice acquisition with blipped-CAIPIRINHA (controlled aliasing in parallel imaging results in higher acceleration).

Methods

Background suppression for 2D acquisition is challenging because of the multiple nulling points required for sequential slice readout. Constrained slice-dependent BS exploits the simultaneous multislice technique to reduce the readout duration, and uses slice-dependent premodulation pulses to achieve BS across slice groups. The proposed scheme was evaluated by in vivo brain experiments at 3 Tesla with multiband acceleration factors up to four. The utility of CSD BS was demonstrated through comparison agains

SUBMITTER: Shao X 

PROVIDER: S-EPMC5557712 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature