【摘要】 目的 提高螺旋CT对肺孤立性小结节(SPN)的定性诊断准确性。方法 应用薄层高分辨扫描 (HRCT)、动态增强扫描(DECT)、后处理技术 (MPR、3D～SSD、MIP)及视窗调节技术诊断SPN116例。结果 经临床证实的116例SPIN主要几类典型CT表现 :(1)肺癌 :分叶征、短毛刺征、胸膜凹陷性、结节或空泡/细支气管空泡征 ;(2)结核瘤 :界清、边缘光、无/浅分叶、常钙化空洞、干酪坏死灶、周围卫星灶、强化直<15Hu ;(3)炎性假瘤 :病灶双侧缘垂直于胸腔、刀削征、锯齿征、长毛刺、尖角、卫星灶、胸膜反应明显 ,抗炎明显吸收缩小。结论 各种扫描技术应用 ,各类病变常见征象的掌握可明显提高对SPN的定性诊断准确率更多还原

【Abstract】 Objective To improve the diagnosis accuracy of spiral CT on single pulmonary node(SPN). Methods 116 cases of SPN were diagnosed with high resolution computerized tomography(HRCT), developing reinforcement CT(DRCT), after-finishing technique (MPR,3D-SSD,MIP) and opto-window adjustment technique. Results The typic CT manifestations of 116 cases SPN confirmed in clinic were mentioned below: (1) lung cancer: part leave sign, short hair spine sign, pleura notch sign, node or vacuole or bronchiole vacuole sign. (2) tuberculoma: clear and smooth border, no superfical part leave sign, more calcification and cavum, cheese liking nicrosis, surround satellite node, reinforcement value <15Hu. (3) inflammatory pseudotumor: bilateral margin of node was upright to thoracic cavity, knife cut sign, crenate sign, long hair spine sign, tip angle, satellite node, apparently pleura reaction and apparent absorption shrinkage after anti-inflammation therapy. Conclusion Application of various CT scanning technique and grasp of various lesion common signswould apparently improve the diagnostic accuracy of SPN.更多还原