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Theoretical simulation results for perfusion-weighted image (PWI) signals and signal efficiencies for (a, b) low- and (c, d) high-resolution whole brain perfusion imaging using pCASL. Simulations were performed with assumed uniform CBF across all slices. SB and MB6 represent SB and MB with MB factor 6, respectively. The simulation results of MB6 including g-factor penalty reflect perfusion SNRs and SNR efficiencies by MB relative to those of SB.
