CT靶扫描及重建技术对孤立性肺结节良恶性的诊断及临床价值

Diagnostic and Clinical Value of CT Target Scanning and Reconstruction Technique in Benign and Malignant Pulmonary Nodules

目的:分析CT靶扫描及重建技术对孤立性肺结节良恶性的临床诊断价值。方法:利用GE宝石能谱CT及飞利浦Brilliance i CT对患者胸部进行扫描筛查,对CT诊断为孤立性肺结节患者进行研究,并利用薄层高分辨(HRCT)靶扫描对结节组织进行扫描,并把扫描后的原始数据和图像传送至工作站进行容积再现(VR)、多平面重组(MPR)、表面投影显示(SSD)、最大密度投影(MIP)、最小密度投影(Min IP)等有关重建处理;并利用不同的窗位、窗宽对结节的形态、分布部位、密度、边缘特征、内部结构、胸膜受累状况、周围血管集聚等相关指标进行统计分析,以分析孤立性肺结节的良恶性状况。结果:经CT诊断,87例周围性肺癌中有4例恶性孤立性肺结节患者误诊,准确率为95.40%;11例患者为良性结节中有1例良性孤立性肺结节患者误诊,准确率为90.91%。结论:在孤立性肺结节的临床诊断中,应用CT靶扫描及重建技术能够可靠地显示出孤立性肺结节的边缘特征、内部结构的CT征象,对于孤立性肺结节良恶性临床诊断具有十分重要的意义。

Objective:To analyze the clinical value of CT target scanning and reconstruction in the diagnosis of benign and malignant pulmonary nodules.Method:The scars of the patients were scanned by GE gemma spectrum CT and Philips Brilliance iCT.The patients with solitary pulmonary nodules werestudied by CT and the nodular tissues were scanned by thin layer high resolution(HRCT),surface projection display(SSD),maximum density projection(MIP),minimum density projection(MinIP),and so on,and the reconstructed data was transmitted to the workstation for volume reproduction(VR),multi-planarrecombination(MPR).And the correlation between the shape of the nodules,the location of the nodules,the density,the edge characteristics,the internalstructure,the pleural involvement and the surrounding blood vessels were analyzed by using different window positions and window widths to analyze therelationship between solitary pulmonary nodules benign and malignant situation.Result:By CT diagnosis,87cases of peripheral lung cancer in4cases ofmalignant solitary pulmonary nodules misdiagnosed,the accuracy rate was95.40%.Conclusion:CT diagnosis and reconstruction of solitary pulmonary nodulescan reliably show the marginal features of solitary pulmonary nodules,CT signs of internal structure,and clinical diagnosis of benign and malignant pulmonarynodules.It has a very important significance.