正常胸腺的CT表现  

Computed Tomography of the Normal Thymus

作　　者：童林军[1] 王恭宪[1] 沈天真[1] 张福琛[1] 程永德[1] 

机构地区：[1]中国人民解放军85医院放射科,上海医科大学附属华山医院放射科

出　　处：《中国医学影像学杂志》1996年第4期193-195,共3页Chinese Journal of Medical Imaging

摘　　要：将１０３例经临床证实的正常胸腺胸部ＣＴ表现分为５个年龄组，详细描述了胸腺位置，各年龄组胸腺形态及密度变化。测量了各年龄组胸腺左右叶宽度、厚度平均值。结果显示，胸腺位于前上纵隔，ＣＴ扫描可清楚显示胸腺。随着年龄增大，胸腺实质的大小逐渐减小，密度减低。各年龄组胸腺厚度的平均值加上１．５个标准差可做为正常胸腺实质大小的上限来判断胸腺实质增大的情况。残留的胸腺实质呈线状及小结节状，小结节直径小于７ｍｍ。patients with norma1 thymus on chest CT examination were devided into five age groups The location and variation in shape and density of thymus in different age groups were described in detail.The thickness and width of thymus in each group were measured and the data in all dimensions underwent significant test examination respectively.The results indicated that the thymus is located in the supra anterior mediastinum and could be demonstrated clearly on CT scan. The size and density of thymus parenchyma decreased gradually with increasing age The upper limit of normal thymus parenchyma is determined to be l.5SDabove the mean value of the thickness of thymus in each group when evaluating the enlargement of thymus.The residual thymus parenchyma appeared to be nodular(with its dimension less than 7mm)or linear in shape.

关 键 词：胸腺 CT 

分 类 号：R816.4[医药卫生—放射医学]