螺旋CT肺脏多期扫描对孤立性肺结节定性诊断的初步评价

Spiral CT lung issue scanning for isolatedness lung tubercle determine the preliminary appraisement of diagnosis

目的比较研究孤立性肺结节螺旋CT多期增强扫描表现,探讨诸结节灶强化特征与其组织病理学改变之间的相关性。方法23例经手术病理、纤维支气管镜活检或痰检等方法证实的孤立性肺结节患者行螺旋CT平扫及多期增强扫描,扫描延迟时间分别为20s、120s和240s,对比剂用量100ml,注射速率2ml/s。观察病灶在多期的增强情况,并对其强化模式进行定量分析。结果恶性结节平扫CT值及增强值均大于炎性结节,在延迟240s时扫描增强值差异更加显著。结论螺旋CT肺脏多期增强扫描能反映病灶的血供信息,为孤立性肺结节性质的鉴别诊断提供证据。

Objective To observe and compare the enhancement of solitary pulmonary nodule （SPN） during that isolatedness lung tubercle spiral CT much issue strengthens scanning expression,discuss Zhu the correlati on between the tubercle reinforced feature and its organization pathologic change of kitchen range. Methods 23 is regular to handle skill pathology, fiber bronchus mirror work J ian or phlegm Jian isolatedness lung tubercle patient trip spiral CT that etc. method confirms level to sweep and much issue strengthen scanning, scanning postpone time difference is 20 s, 120 s and 240 s, for using quantity than dose, 100 ml injects speed 2 ml/s. Observe focus in much issue strengthen condition,and for its reinforcement,pattern carries out quantitative analysis. Results Malignant tubercle is flat to sweep CT value and strengthens value,is larger than scorchingness tubercle,when postponing 240 s, it is notable that scanning strengthen value discrepancy. Conclusion It can reflect the blood of focus to let information if spiral CT lung much issue strengthens scanning,for isolatedness lung tubercle nature distinguish diagnosis offer evidence.