前纵隔的正常位置和形态

目的　探求正常成人前纵隔的位置和形态。方法　在CT上测量 10 0例健康志愿者隆突层面前纵隔的前后径、前横径、后横径及位置 (偏离人体中线的距离 )。结果　 10 0例健康志愿者CT测量得出的正常范围 ( 95 %正常界限 ) :位置右偏 5mm～左偏15mm ;前横径 <3 0mm ;后横径女性 <40mm ,男性 <5 0mm ;前后径女性 <3 0mm ,男性 <3 5mm。结论　本文建立了前纵隔位置和形态的正常值范围 ,将有助于我们判断轻微的纵隔移位及其他可能引起前纵隔形态和位置异常的疾病的诊断

The Position and Configuration of the Anterior Mediastinum in Normal Volunteers

Objective To investigate the normal position and configuration of anterior mediastinum.Methods Chest CT scanning was performed in 100 healthy volunteers. Various parameters of the anterior mediastinum were measured, including position (shift distance from medial line of the body),frontal and retral width, and anterioposterior dimension.Results The normal range (with the limit of 95%) of the anterior mediastinum included: the position was shifted 5 mm to right and 15 mm to left, the frontal width was under 30 mm in both man and woman, the posterior width was under 40 mm in woman, and under 50 mm in man, the anterioposterior diameter was under 30 mm in woman and under 35 mm in man.Conclusion The normal region about position and configuration of the anterior mediastinum is established in this study. These data will helpful in detecting the subtle mediastinal shift or other abnormal situation affected the mediastinum.