【摘要】 目的 探讨CT增强扫描在良恶性肺结节鉴别诊断中的作用。 方法 93例肺结节中，恶性65例(均为肺癌)，良性28例。先对病灶进行平扫，然后于注射80～100ml造影剂后35s、2min及5min对病灶进行薄层增强扫描。观察病灶的强化程度及强化特点，并与CT平扫、临床病理进行对照研究。 结果 肺癌的强化程度显著高于良性肺结节(P<0.02)。在强化特征方面28例肺癌出现高密度点条状强化;52例肺癌和5例良性结节强化不均匀;3例肺癌和4例良性结节强化均匀;5例结核球和1例炎性假瘤呈环状强化;12例结核球不强化。 结论 CT增强扫描对良、恶肺结节的鉴别诊断有重要的作用。

    关键词 肺结节 断层摄影术 X线计算机 影像增强 诊断

    Differential diagnosis of pulmonary nodules by using enhanced CT with iodinated contrast material

    Huang Xiangming，Su Jinquan

    Department of Radiology，Baoan People's Hospital，Shenzhen518101.

    【Abstract】 Objective To evaluate pulmonary nodules by using enhanced CT.Methods 93patients with pulmonary nodules included65pulmonary carcinomas and28benign pulmonary nodules.Thin-slice CT was per-formed before35s，2min and5min after injection of100ml of contrast material at2ml/s.The maximum level of en-hancement and the enhanced patterns were recorded.Results Lung carcinomas enhanced significantly more than be-nign nodules.28lung carcinomas showed the sign of enhanced spots and twigs;52lung carcinomas and4benign nod-ules showed in homogeneous enhancement;3lung carcinomas and4benign nodules had homogeneous enhancement;5tuberculomas and1inflammatory pseudotuma appeared ring enhancement;12tuberculomas showed nonenhancement.Conclusion Enhanced CT is a valuable method to differentiate pulmonary carcinomas from benign pulmonary nod-ules. ......