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Representative quantitative magnetic resonance imaging (MRI) maps and longitudinal trend for (a) apparent diffusion coefficient (ADC), (b) T1, and (c) T2. Measurements were performed weekly over the course of 4 weeks using two National Institute of Standards and Technology (NIST) traceable phantoms. The mean and standard deviation are measured in a circular region‐of‐interest (ROI) of 1‐cm diameter centered on each vial. Nominal values are given in Tables A1 and A2
