CT三维重建技术对肺内孤立性结节的诊断价值

肺内孤立性结节的诊断及鉴别诊断一直是胸部影像学的重点和难点,充分显示其特征是诊断的关键。影像检查中常见的病变,因其缺乏典型的影像特征,以及影像检查设备的局限性和检查者体位与扫描方法的影响使其容易漏诊,尤以≤3 cm结节为甚。近年来随着CT三维重建技术的改革和发展,让很多学者对肺内孤立性结节的诊断和鉴别诊断有了进一步飞跃认识。通过多层螺旋CT(MSCT)三维后处理技术(VR、MPR、CPR、MIP、SSD等方法)对肺内孤立性结节进行三维回顾性的重建,能够清晰地显示病灶的分叶征、空气支气管征、毛刺征、空泡征、血管集束征、棘突征、胸膜凹陷征等征象,为肺内孤立结节的定位、定性提供了更可靠的依据。

The value that three dimensional reconstruction technology of CT in diagnosing solitary pulmonary ;nodules

The diagnosis and differential diagnosis in solitary pulmonary nodules have always been the emphasis and difficulty of chest imaging, the key of diagnosis lies in showing its characteristics fully. The common disease in the image examination, which due to lack of typical imaging features and limitation of imaging equipment and the position of patients and influence of scanning methods, made it easy to be misdiagnosed, especially for those diameter≥3 cm, recently with revolution and development of three dimensional reconstruction technology of CT, which made many scholars have a further understanding in diagnosing and differential diagnosing solitary pulmonary nodules. Solitary pulmonary nodules were taken three dimensional reconstruction retrospectively by three-dimensional post-processing technology of MSCT （VR, MPR, CPR, MIP, SSD and so on）. It can clearly show the symptom of the nodules such as lobular sign, air bronchogram sign, spicule sign, vocuole sign, vascular convergence sign, spinous sign, pleural indentation. It offered a more reliable basis for detecting and positioning the lesions early.