基于CCTA数据扩展重建对房颤合并冠心病患者肺静脉成像的可行性研究  

The Feasibility Study of CT Pulmonary Veins Imaging Based On Coronary CT Angiography In Otrial Fibrillation Patients With Coronary Heart Disease

作　　者：丁墩 何拓 郭西园 米惠枝 邓蕾 杨全新[1] 李晓会[1] DING Dun;HE Tuo;GUO Xi-yuan;MI Hui-zhi;DENG Lei;YANG Quan-xin;LI Xiao-hui(Department of Medical Imaging,Second Affiliated Hospital of Xi’an Jiaotong University,Xi’an 710004,ShaanXi Province,China)

机构地区：[1]西安交通大学第二附属医院影像科,陕西西安710004

出　　处：《中国CT和MRI杂志》2023年第4期36-38,共3页Chinese Journal of CT and MRI

基　　金：陕西省自然科学基金青年项目(2022JQ-900);西安交通大学第二附属医院院基金(2018YJQN-01)。

摘　　要：目的 探讨基于应用扩展显示视野重建(Display Field of View,DFOV)的CCTA数据对房颤合并冠心病患者肺静脉一体化成像的可行性研究。方法 前瞻性收集100例拟行CCTA及肺静脉成像的房颤合并冠心病患者并随机分为观察组和对照组,每组50例,观察组进行轴向冠状动脉CT血管(CCTA)以评估冠状动脉,然后应用DFOV生成三维图像以显示肺静脉解剖及开口;对照组采集CCTA数据,然后进行肺静脉成像扫描。以5级评分评价两组主观图像质量,比较两组的辐射剂量、造影剂用量、图像主观评分以及左心房及肺静脉开口处的CT值、信噪比(SNR)及对比信噪比(CNR)。结果 两组被试性别、年龄、体重指数(BMI)、肺静脉图像主观评分均无统计学差异;试验组组的辐射剂量及造影剂用量均低于对照组(P<0.001),差异有统计学意义;试验组左心房及四个肺静脉开口处SNR、CNR均高于对照组(P<0.001)。结论 对于房颤合并冠心病患者应用扩展显示视野重建(DFOV)的CCTA数据可一站式进行冠状动脉及肺静脉成像,而且能够有效降低患者的造影剂用量及辐射剂量。Objective To explore the feasibility of integrated pulmonary vein imaging in atrial fibrillation patients with coronary heart disease based on the application of CCTA data using extended display field of view reconstruction(Display Field of View,DFOV).Methods A prospective collection of 100 patients with AF and coronary heart disease who underwent CCTA and pulmonary vein imaging were randomly divided into two groups.with 50 cases in each group.Group A underwent axial coronary CT angiography(CCTA)to assess the coronary arteries,And then used DFOV to generate three-dimensional images to show the anatomy and opening of the pulmonary vein;group B collected CCTA data,and then performed pulmonary vein imaging scans.The subjective image quality of the two groups was evaluated with a 5-level score,and the radiation dose,the amount of contrast agent,the subjective image score,and the CT value,and signal-to-noise at the left atrium and pulmonary vein opening were compared between the two groups.Ratio(SNR)and contrast signal-to-noise ratio(CNR).Results There were no statistical difference in gender,age,body mass index(BMI),and subjective score of pulmonary vein images between the two groups;the radiation dose and contrast agent dosage of group A were less than those of group B(P<0.001).The SNR and CNR at the left atrium and four pulmonary vein openings in group A were higher than those in group B(P<0.001).Conclusion For patients with atrial fibrillation and coronary heart disease,the application of expanded display field reconstruction(DFOV)CCTA data can be used for one-stop imaging of coronary arteries and pulmonary veins,and can effectively reduce the patient's contrast agent dosage and radiation dose.

关 键 词：房颤 冠心病 肺静脉成像 图像质量 

分 类 号：R814.42[医药卫生—影像医学与核医学]