螺旋CT后处理重建技术在诊断肺动静脉畸形的临床价值

Clinical Value of Spiral CT Post-processing Reconstruction Technique in the Diagnosis of Pulmonary Arteriovenous Malformations

目的探索螺旋CT后处理重建技术在诊断肺动静脉畸形(PAVM)的临床价值。方法以2013年1月至2018年1月在本院收治的17例的PAVM患者为研究对象,所有纳入患者均经德国西门子64层螺旋CT机平扫和增强扫描。扫描后采用原始图像后处理技术容积重建(Volumetric Reconstruction,VR)、最大密度投影(Maximum Intensity Projection,MIP)和多平面重建(Multiplanar Reconstruction,MPR)技术重现肺血管图像。结果CT肺血管重建共发现22个病灶,形态基本为圆形、卵圆形,供血动脉管径0.3~2cm,引流静脉管径为0.5~3.5cm,病灶直径为5.0~7.5cm,全部位于胸膜下,左、右肺分别为14个和8个病灶,采用MPR从多方位共观察到17(77.27%)病灶;采用MIR重建共观察到19(86.36%)个病灶;采用VR重建共观察到20(90.91%)个病灶,其检测一致性分别为0.77、0.86、0.91;采用MPR、MIR和VR共同诊断,共检出病灶22(100%)个,检测一致性为1.00。结论螺旋CT后处理重建技术对PAVM具有较高的临床诊断价值。

Objective To explore the clinical value of spiral CT post-processing reconstruction technique in the diagnosis of pulmonary arteriovenous malformations(PAVM).Methods 17 patients with PAVM admitted to our hospital from January 2013 to January 2018 were selected for the study.All patients were given German Siemens 64-slice spiral CT machine for plain scan and enhanced scan.After scanning,the original image post-processing techniques of Volume Reconstruction(VR),Maximum Intensity Projection(MIP)and Multiplanar Reconstruction(MPR)were used to reproduce pulmonary vascular images.Results A total of 22 lesions were found in CT pulmonary vascular remodeling,and their morphology was round and oval,and the diameter of blood supply artery was 0.3-2 cm,and diameter of drainage vein was 0.5-3.5 cm and the diameter of lesion was 5.0-7.5 cm,and all lesions were located under the pleura,and there were 14 lesions in left lung and 8 lesions in right lung.A total of 17(77.27%)lesions were observed by MPR from multi-direction.A total of 19(86.36%)lesions were observed by MIR reconstruction.20(90.91%)lesions were observed by VR reconstruction,and the detection consistencies were 0.77,0.86 and 0.91 respectively.A total of 22(100%)lesions were detected by combined diagnosis of MPR,MIR and VR,and the detection consistency was 1.00.Conclusion Spiral CT post-processing reconstruction technique has a high clinical diagnostic value for PAVM.