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. 2002 Feb;23(2):248–254.

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Fig 1. — Off-midline non-contrast-enhanced sagittal T1-weighted MR image (500/11/1 [TR/TE/excitations]) in a 25-year-old healthy man shows the normal appearance of the diploic marrow in the calvarium. Usually by the time an individual is aged 21 years, conversion from hematopoietic marrow to fatty marrow is completed. The fat content is responsible for the high signal intensity of the diploic marrow on T1-weighted MR images (arrows). The area of hypointensity along the region of the frontal bone represents the neighboring suture.