Fatty marrow is easy to recognize on Τ1-weighted MR images. Red marrow, however, has to be distinguished from abnormal marrow, and this is one of the main challenges for bone marrow MR imaging. It is imperative to know where to expect red marrow in each age group or where red marrow may reappear under certain conditions. A low-signal-intensity femoral diaphysis on T1-weighted images is likely normal at age 5, but it is definitely abnormal at age 17. Likewise, in a 60-year-old individual, a low-signal-intensity spine on T1-weighted images is an abnormal finding, whereas in a 25-year-old subject, it could be related to the presence of normal red marrow.
Femoral Diaphysis Ossification Center Distal Metaphysis Fatty Marrow Yellow Marrow
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
This is a preview of subscription content, log in to check access.
Foster K, Chapman S, Johnson K (2004) MRI of the marrow in the paediatric skeleton. Clin Radiol 58:651–673CrossRefGoogle Scholar
Ricci C, Cova M, Kang YS et al (1990) Normal age-related patterns of cellular and fatty bone marrow distribution in the axial skeleton: MR imaging study. Radiology 177:83–88CrossRefPubMedGoogle Scholar
Dawson KL, Moore SG, Rowland JM (1992) Age-related changes in the pelvis: MR and anatomic findings. Radiology 183:47–51CrossRefPubMedGoogle Scholar
Duda SH, Laniado M, Schick F et al (1995) Normal bone marrow in the sacrum of young adults: differences between sexes seen on chemical-shift MR imaging. Am J Roentgenol 164:935–940CrossRefGoogle Scholar