双源CT与MRI在主动脉瓣病变患者置换术前心功能诊断中应用观察

目的 以核磁共振成像(MRI)为对照标准,探讨双源CT用于主动脉瓣病变患者置换术前心功能诊断评估的价值,以指导临床应用.方法 分层整群抽样,回顾分析2018年2月至2019年1月在我院诊断为主动脉瓣病变并择期接受主动脉瓣置换术治疗的54例患者的临床资料,全部患者术前均接受MRI及双源CT成像检查.经MRI与双源CT专业...

Application of Dual-source CT and MRI in the Diagnosis of Cardiac Function in Patients with Aortic Valve Disease before Replacement

Objective Magnetic resonance imaging(MRI) is used as the contrast standard to investigate the value of dual-source CT in diagnosing and evaluating cardiac function in patients with aortic valve disease before replacement as to guide the clinic.Methods The stratified cluster sampling was adopted.The clinical data of 54 patients diagnosed with aortic valve disease with selective aortic valve replacement from February 2018 to January 2019 were retrospectively analyzed.All patients underwent MRI and dual-source CT examination before surgery.The left ventricular end-systolic volume(ESV),left ventricular end-diastolic volume(EDV),left ventricular ejection fraction(LVEF),stroke volume(SV)were measured and calculated by MRI and dual-source CT professional cardiac function analysis softwa re,each indicator was measu red three times and took the average.The levels of indexes were detected by different methods,and the correlation between indexes was analyzed by the different detection methods.The consistency of dual-source CT and MRI was verified by interclass correlation coefficient(ICC).Results The levels of EDV,SV,and LVEF measured by dual-source CT were slightly higher than those measured by MRI,and the ESV level was slightly lower than MRI,but the difference was not statistically significant(P>0.05);There was a positive correlation in ESV,EDV,LVEF and SV levels between MRI and dual-source CT(r>0,P<0.05);The ICC value of dual-source CT and MRI in the detection of cardiac function indexes was 0.942 to 0.998,which was almost identical(P<0.05).Conclusion Dual-source CT for quantitative cardiac function assessment before the aortic valvular disease is accurate,reliable,and reproducible.One-time dual-source CT coronary angiography can evaluate left ventricular function and coronary stenosis without increasing radiation dose,which can provide more critical reference information for cardiac function assessment before aortic valvular replacement and the development of su rgical schemes.