放射性肺炎的X线和CT诊断

目的：对比分析放射性肺炎的常规Ｘ线和ＣＴ特点，评价ＣＴ对本病的诊断价值。方法：回顾性分析４６例放射性肺炎的常规Ｘ线和ＣＴ表现。结果：放射性肺炎的典型表现为照射野内散在分布小灶性渗出性病变；形态与照射野一致的大片密度增高影；肺间质增厚和（或）肺纹理增粗；边缘锐利清晰的纤维化影或肺不张，该表现多见于中后期。结论：ＣＴ对放射性肺炎的诊断明显优于Ｘ线，且两者对该病的临床治疗和预后判断具有重要意义。

X-rays and CT diagnosis of radiation pneumonia

Objective:To analyse the general characteristics of X rays and CT and to evaluate CT diagnosis of radiation pneumonia.Methods:The general radiography and CT findings of 46 cases with radiation pneumonia were analysed retrospectively.Results:The typical features of radiation pneumonia included:(1)scatted patchy infiltration in radiation area;(2)a large consolidation shadowing,which was similar to radiation field in shape;(3)pulmonary interstitium thickening or/and bronchovascular boundles thickening;(4)well defined fibrosis shadowing or atelectasis.Conclusions:CT is superior to chest radiography in diagnosis of radiation pneumonia,and both of them play and important role in clinical therapy an prognosis. [