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(A) through (C) are of a patient treated with fludarabine and (D) through (F) are of a patient treated with methotrexate. (A) and (D) are the fluid-attenuated inversion recovery (FLAIR) sequence, (B) and (E) are diffusion weighted imaging (DWI) sequences, and (C) and (F) are apparent diffusion coefficient (ADC) sequences.
