摘要
目的探讨儿童三角肌挛缩症3.0 T MRI影像表现。材料与方法搜索经手术病理证实的三角肌挛缩症患儿18例,术前均行X线及3.0 T MRI检查(MR T1WI、T2WI,抑脂T2WI、轴位快速梯度回波(GRE)T2WI序列),其中9例同时行CT检查。结果 T1WI及T2WI显示18例受累三角肌不同程度变薄、萎缩,内侧肌间隙增宽。GRE-T2WI显示16例患侧从肱骨头外上方沿三角肌走行至外下的挛缩纤维索条影,呈条带状低信号,邻近皮下脂肪局灶性增厚、向内填充。病理结果显示GRE-T2WI中挛缩纤维索条影为致密纤维结缔组织,透明变性,横纹肌萎缩或消失,肌组织间由脂肪组织填充,所见与病理结果符合率为88.9%。结论3.0 T MRI尤其GRE-T2WI序列能够直接准确显示挛缩三角肌及增生的纤维索条结构,有利于确定诊断。
Objective： To study the 3.0 T MRI characteristic features of deltoid contracture in children. Materials and Methods： The study comprised 18 children with deltoid contracture. All children were performed with X-ray and 3.0 T MRI. MR routine scanning sequences were T1 WI, T2 WI, T2 WI with fat suppression sequence, and axial fast gradient echo（GRE） T2 WI sequence. CT scan was conducted in 9 children. Results： MR T1 WI and T2 WI showed that involved deltoid became thin and atrophic in different degree, and the inner muscular clearance became broad in 18 cases. GRE-T2 WI showed that out above humerus head there had low signal fi ber band along to the outside of the deltoid contracture in 16 cases, and adjacent subcutaneous fat focal thickening to fi ll in the surface of band. Pathological results showed, in MR GRE-T2 WI, contracture fi brous bands were dense fi brous connective tissue, hyaline degeneration, the striated muscle to atrophy or disappear, and showed adipose tissue to fill between muscle tissue; Coincidence rate of MR GRE-T2 WI manifestation and pathology results was 88.9%. Conclusion： 3.0 T MRI can directly show exactly contracture deltoid and hyperplasia fi brous bands structure, and then determine a clear diagnosis.
出处
《磁共振成像》
CAS
CSCD
2015年第6期437-440,共4页
Chinese Journal of Magnetic Resonance Imaging
关键词
儿童
三角肌
肌挛缩
磁共振成像
Child
Deltoid
Contracture
Magnetic resonance imaging
