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B1 optimization and CEST properties of BA-liposomes (BAL, n=3). (A), (B), and (C) are Z-spectra and corresponding CEST contrasts of BAL (with 75 mg/mL lipids) under various B1 powers; (D), (E) and (F) are Z-spectra, corresponding CEST contrast, and maps at 5 ppm and -3.4 ppm of various BAL formulations.
