目的：探讨肠壁积气X线平片以及CT的影像学表现及临床意义。方法：回顾性分析2009年至2012年本院腹部X线平片及腹部C T发现的10例肠壁积气患者的临床以及影像学资料，探讨肠壁积气的腹部X线平片以及C T的影像学特点及其临床意义。结果：9例腹部X线发现肠壁积气共同特点为沿肠管壁的线状、环状、囊状、泡状透亮影。CT扫描软组织窗及肺窗肠壁积气特征性表现为沿肠壁的线状、环状、泡状气体密度影。10例肠壁积气患者中9例临床确诊为新生儿坏死性小肠结肠炎，另1例为巨结肠患儿。结论：CT对肠壁积气的诊断敏感性及特异性较X线平片高，X线平片应用比较广泛，适合于床边检查，可用于肠壁积气的临床筛查。“,”Objective To investigate the computed tomography (CT) and plain X-ray appearances of pneumatosis intestinalis (PI) and its clinical significance. Methods In a retrospective study of ten patients with PI between 2009 to 2012. Plain X-ray and CT appearances, clinical features were discussed. Results Nine patients with PI were diagnosed by plain X-ray, the other one by computed tomography (CT). On plain X-ray radiographs , PI appeared as linear or round or bubble or cystic radiolucencies. Computed tomography (CT) scan in soft-tissue window or in lung window PI appeared as linear or circumferential or bubbly density of the gas shadows. PI was present in nine cases of necrotizing enterocolitis, another one of hirschsprung disease. Conclusion CT had high sensitivity and specificity for diagnosed of PI, X-ray had wide application, suitable for bedside check, clinical can be used for screening.