多发性肌炎的CT应用价值

目的研究多发性肌炎(PM)的肌肉CT表现特点及应用价值。方法经肌肉活检证实的多发性肌炎20例。所有病例均完成腰背肌、臀肌、大腿肌以及小腿肌的CT轴位扫描,其中大腿肌和小腿肌分肌群组观察。观察内容包括:肌肉的密度;肌肉的体积;肌筋膜的改变;肌肉组织的清晰度;皮下脂肪层厚度。结果CT发现肌肉体积缩小15个部位;肌肉密度减低,脂肪样变53个部位;筋膜增厚18个部位;皮下脂肪层增厚23个部位;肌肉组织模糊3个部位。结论CT能够清楚显示PM肌肉病损程度、判断肌肉萎缩和病变分布情况,为肌肉活检明确定位。

Clinical Applied Value of CT in Polymyositis

Objective To investigate CT findings of polymyositis(PM) in musculus and the applied value of CT.Methods 20 cases of PM confirmed by pathology and undergone CT scan,including waist,back,gluteus thighs and calfs.Above of these gluteus,thighs and calfs were observed groupingly.The observed contents included :muscle density;muscle volume;changes of delecting myofascitis lesions;clear degree of musculature and thickness of subcutaneous fattiness.Results CT findings included amyotrophy in 15 groups;muscle density lower and muscle fat in 53 groups;thickened fascia in 18 groups;subcutaneous fat thickened in 23 groups and musculus indistinet in 3 groups.Conclusion CT can help display the degree and distribution of lesions,and the accurate localization for biopsies in myofascitis.