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Fig 1. In vivo MR spectroscopy of normal brain. Axial T2-weighted MR image shows a single voxel of interest for MR spectroscopy (white box) placed within the brain parenchyma in a healthy volunteer (A). The corresponding in vivo MR spectrum shows the normal dominant peaks of NAA at 2.0 ppm (arrow), Cr at 3.0 ppm, and Cho at 3.2 ppm (B).
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