摘要
目的:应用MRI研究骨盆红、黄骨髓随年龄变化的规律,为正确认识骨盆骨髓信号异常提供基础。方法:回顾性分析128例患者(0~22岁)骨盆SE-T1WI-MRI影像,所有患者无血液和骨髓疾病。对骨盆的6个部位:髂前上嵴、髂后上嵴、髋臼、坐骨、耻骨和骶骨的骨髓信号强度和均匀程度进行分析,确定骨盆各部位骨髓信号随年龄变化的规律。结果:随年龄增长骨髓信号的强度及信号不均匀程度呈增加的趋势。2岁后,髋臼和髂前上嵴的信号总是高于其他部位。所有年龄段髋臼信号强度最高,不均匀程度最明显;耻骨很少表现为信号不均匀。骨盆的各部位信号强度几乎均低于脂肪,各部位之间的信号强度差别不大,至多差2级,不均匀程度相差也不明显,至多差1级。根据骨髓信号强度和均匀程度分为5个年龄段:婴儿期、幼儿期、儿童期、青春期早期、青春期晚期。结论:骨盆各部位骨髓信号强度和均匀程度与年龄有密切关系,骨髓信号强度和信号不均匀程度随年龄增加呈增加趋势。注意其变化对骨髓疾病的诊断和鉴别诊断有重要意义。
Abstract
Objective: To explore age-specific patterns in distribution of red and yellow marrow in the pelvis. Methods: T1WI of the pelvis in 128 subjects aged 0~22 years old, with no history of hematologic bone marrow diseases were analyzed retrospectively. Red and yellow marrow distribution of the pelvis was reviewed on MRI. The signal intensity and degree of homogeneity of marrow in six anatomic regions of the pelvis, including anterior ilium, posterior ilium, acetabulum, ischium, pubis and sacrum. Results: Marrow siginal intensity and heterogeneity increased in the pelvis with age increasing. After 2 years of age, siginal intensities of anterior ilium and acetabulum were always higher than those of other regions. Marrow siginal intensity and heterogeneity was most prominent in the acetabulum at all ages. Siginal intensity of pubis was rarely inhomogeneous. Marrow siginal intensity of all the regions was almost always lower than that of the fat. Marrow siginal intensity and heterogeneity had no prominent difference between all the regions. Patterns of bone marrow siginal intensity and heterogeneity were recognized in five age groups: infant, toddler, child, earlier adolescent, late adolescent. Conclusion: Marrow siginal intensity and heterogeneity of the pelvis are correlated with age, marrow siginal intensity and heterogeneity increased from birth to 22 years old. Knowledge of normal patters of marrow characteristic is very useful in the diagnosis and differential diagnosis of bone marrow diseases.
关键词
骨盆 /
骨髓 /
磁共振成像
Key words
pelvis /
bone marrow /
magnetic resonance imaging
董 越;吴振华.
骨盆骨髓MRI信号年龄变化规律[J]. 中国临床医学影像杂志. 2006, 17(4): 205-207
DONG Yue;WU Zhen-hua.
Age-related marrow changes in pelvis: MRI and anatomic findings[J]. Journal of China Clinic Medical Imaging. 2006, 17(4): 205-207
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