Summary
The signal intensity pattern of normal clivus bone marrow related to age was studied on Tl-weighted sagittal plain magnetic resonance images. Bone marrow in the clivus had a uniformly low signal intensity (grade 1) in 100% of the patients at 0–5 years and 96% of patients in the first decade (0–9 years). In the second decade there was a sharp decrease in the number of patients (43%) showing grade 1 clivus. Patients having mixed clivus signal intensity (grade 2) were mostly seen in the second decade (28.5%). Uniform high signal intensity (grade 3) was not observed under the age of 10. Grade 3 clivus pattern increased with age from the second decade, while grades 1 and 2 clivus bone marrow showed a marked decrease.
Résumé
Les aspects normaux de l’intensité de signal de la moelle osseuse du clivus en fonction de l’âge furent étudiés en imagerie par résonance magnétique en coupes sagittales pondées Tl. La moelle osseuse du clivus possédait un hyposignal homogène (grade 1) chez 100% des sujets âgés de 0 à 5 ans et chez 96% des sujets dans la première décade (0–9 ans). En seconde décade il y avait une forte diminution du nombre de patients (43%) présentant un clivus de grade 1. Les patients présentant un clivus d’intensité de signal mixte (grade 2) furent principalement rencontrés dans la seconde décade (28,5%). Un hypersignal homogène (grade 3) n’était pas observé avant l’âge de 10 ans. Les aspects de clivus de grade 3 augmentaient avec l’âge après la seconde décade, tandis que les aspects de grade 1 et 2 présentaient une forte diminution.
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Oyar, O., Gövsa, F., Sener, R.N. et al. Assessment of normal clivus related to age with magnetic resonance imaging. Surg Radiol Anat 18, 47–49 (1996). https://doi.org/10.1007/BF03207762
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DOI: https://doi.org/10.1007/BF03207762