探讨基于冠脉CTA双能成像去钙化扫描对斑块血管狭窄评估的影响  

To Investigate the Impact of Dual-Energy CT Coronary Angiography Decalcification Scan on the Assessment of Plaque Vascular Stenosis.

作　　者：舒意 陈新月[1] 程巍[1] 彭礼清[1] Shu Yi;Chen Xinyue;Cheng Wei(Department of Radiology,West China Hospital,Sichuan University,Chengdu,Sichuan 610041,China.)

机构地区：[1]四川大学华西医院放射科,四川成都610041

出　　处：《四川医学》2021年第12期1244-1248,共5页Sichuan Medical Journal

摘　　要：目的探讨基于冠脉CTA双能成像去钙化扫描对于斑块血管狭窄评估的影响。方法前瞻性纳入2020年1月至7月在我院行双能冠脉DECTA扫描的患者25例,收集斑块共35个。记录斑块去钙化前和去钙化后在影像学上的特征。包括:位置、狭窄率、斑块成分和双能去钙化伪影后血管狭窄程度变化及图像的诊断质量。结果钙化去除后图像对于斑块的诊断无影响,伪影的发生率没有差异;钙化去除前后血管的狭窄率差异有统计学意义(P<0.01);去除后血管的狭窄率变化与其位置及斑块成分无相关性。结论双能去钙化的应用可以减少钙化斑块在CT成像下伪影对于狭窄程度评估的影响,提高冠脉斑块患者其狭窄程度危险分层的准确性,具有重要的临床意义。Objective To investigate the impact of dual-energy CT coronary angiography decalcification scan on the assessment of plaque vascular stenosis.Method From January 2020 to July 2020,we prospectively enrolled 25 patients who underwent coronary CT angiography by dual-energy scan.A total of 35 plaques were collected.The imaging features of the plaques were recorded before and after decalcification,including:position,stenosis rate,plaque composition,changes in the degree of vascular stenosis after dual-energy decalcification artifacts,and image diagnostic quality.Results After calcification was removed,the image had no effect on the diagnosis of plaque and the incidence of artifacts.There was a statistically significant difference in the stenosis rate before and after calcification removal(P<0.01),with no correlation between the stenosis rate and its location or the plaque composition.Conclusion The application of dual-energy decalcification can reduce the influence of calcified plaque artifacts on the evaluation of stenosis under CT imaging.It has a significant clinical value for the improvement of accuracy of risk stratification of stenosis degree for patients with coronary artery disease.

关 键 词：冠状动脉CT血管成像 双能CT成像 去钙化伪影 

分 类 号：R445.3[医药卫生—影像医学与核医学]