Pal C R, Tasker A D, Ostlere S J, Watson M S
Nuffield Orthopaedic Centre NHS Trust, Headington, Oxford, UK.
Skeletal Radiol. 1999 May;28(5):274-8. doi: 10.1007/s002560050515.
To describe the magnetic resonance (MR) appearances of the bone marrow of children's feet and to determine their frequency and significance.
A review of MR studies obtained in a retrospective series of 35 children with foot pain and in a prospective series of 19 asymptomatic children was performed. The MR appearances on T1-weighted, T2-weighted and STIR sequences were assessed and the frequency of patchy areas of low signal intensity on T1-weighted and high signal intensity on T2-weighted or STIR sequences was determined and correlated with clinical features.
Low signal intensity on T1-weighted and high signal intensity on T2-weighted and STIR sequences were seen in 63% of symptomatic and 57% of asymptomatic children. In all cases where both feet were imaged, the changes were seen bilaterally. The marrow pattern varied from multiple discrete foci to more extensive confluent areas of high signal on the STIR sequence. These appearances are frequent and represent normal variation in the growing skeleton, and should not necessarily be interpreted as a sign of pathology.
描述儿童足部骨髓的磁共振成像（MR）表现，并确定其出现频率及意义。
回顾性分析了35例足部疼痛儿童的MR研究结果，并前瞻性分析了19例无症状儿童的情况。评估了T1加权、T2加权和短TI反转恢复（STIR）序列上的MR表现，确定了T1加权上低信号强度斑片状区域以及T2加权或STIR序列上高信号强度区域的出现频率，并将其与临床特征进行关联分析。
63%的有症状儿童和57%的无症状儿童在T1加权上表现为低信号强度，在T2加权和STIR序列上表现为高信号强度。在所有双侧足部成像的病例中，双侧均可见这些变化。骨髓表现从多个离散病灶到STIR序列上更广泛的融合性高信号区域不等。这些表现很常见，代表生长中骨骼的正常变异，不一定应被解释为病理征象。
