【摘要】 目的 评价CT增强扫描对肺内肿块或和结节性病灶的诊断价值。方法 全部病例均作CT平扫和增强扫描。测定部分平扫和增强扫描的CT值。观察全部平扫和增强扫描的表现。将增强扫描的表现进行了分类。对肺内良、恶性病灶的平扫和增强扫描征象、CT值，特别是增强扫描征象进行了对比分析。收集肺内肿块患者45例，全部均经病理学证实，其中恶性病例40例，良性病例5例。结果 肺内恶性病灶呈不均匀性增强，增强前后CT值随病因不同相差25～89HU，其中>40HU者达到86.3%，而良性病灶则呈均匀性增强，增强前后CT值相差<20HU(10～18HU)。结论 CT增强扫描对肺内肿块的定性诊断具有相当的价值，但对定型诊断仍需进一步探索。

    关键词 肺内肿块 CT平扫 CT增强扫描 CT值测量

    Enhanced CT findings of pulmonary mass or/and nodule focus:45cases attached

    Li Daxue，Hu Yong

    Department of Radiology，The Second Hospital of Chongqing，Chongqing400054.

    【Abstract】 Objective To evaluate the diagnostic value of contrast-agent-enhanced CT scan or enhanced CT for the pulmonary mass or/and nodule focus.Methods 45cases whom proved by pathologic ways was obtained，includˉing malignant focus40cases，benign focus5cases.Plain CT scan and enhanced CT scan were carried out.The appearance in both plain CT scan and enhanced CT scan was observed and analysed;the CT number in the port of plain CT scan and enhanced CT scan were measured;the pulmonary focus ......