MRI of bone marrow disorders.
Four factors can be used in MR of bone marrow: fat-water distribution, artifacts induced by bone trabeculae, diffusion, and uptake of contrast media. Fat-water is imaged using T1-weighted spin-echo, short tau inversion recovery (STIR), and fast STIR, in- and out-of-phase gradient echo, and fat pre-saturation sequences; bone trabeculae by gradient echo with long TE; diffusion by single-shot spin-echo. The injection of contrast media is a more easy and efficient way to improve the specificity. The value and limitations of those sequences are discussed in marrow replacements (metastases, lymphoma, leukemia) and in myeloid hyperplasia or depletion.
Vanel
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D
Department of Radiology, Institut Gustave-Roussy, 39 rue Camille Desmoulins, F-94805 Villejuif Cedex France.
Dromain
C
C
Tardivon
A
A
D001853:Bone Marrow / Q000473:pathology; D001855:Bone Marrow Diseases / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male