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为探讨99Tcm-MIBI门控心肌灌注显像(G-MPI)在左束支传导阻滞(LBBB)病人中诊断冠心病的价值。21例LBBB患者均完成二日法门控负荷/静息MPI、心电图平板运动试验(ETT)、超声心动图检查。比较非门控心肌灌注显像(NG-MPI)和G-MPI在LBBB病人中诊断冠心病的准确性,并对各种无创性诊断技术的诊断价值进行比较。G-MPI诊断的特异性(P=0.041)和准确性(χ2=4.725,P=0.030)方面要明显高于NG-MPI,G-MPI与NG-MPI相比能明显提高对LAD病变诊断的特异性和准确性(P均=0.020)。G-MPI诊断的敏感性要高于ETT,P=0.030。在诊断的准确性方面,G-MPI与ETT相比有极显著性差异(χ2=7.467,P=0.006)。门控心肌灌注显像在LBBB病人中诊断冠心病具有较高的准确性,与非门控心肌显像和其它无创性诊断技术相比具有一定的优势。
To investigate the value of 99Tcm-MIBI gated myocardial perfusion imaging (G-MPI) in the diagnosis of coronary heart disease in left bundle branch block (LBBB) patients. Twenty-one patients with LBBB completed the two-day gating / resting MPI, electrocardiogram treadmill exercise test (ETT) and echocardiography. The diagnostic accuracy of non-invasive myocardial perfusion imaging (NG-MPI) and G-MPI in patients with LBBB was compared with that of non-invasive diagnostic techniques. The specificity and specificity of G-MPI (χ2 = 4.725, P = 0.030) were significantly higher than NG-MPI in diagnosis of LAD lesions Specificity and accuracy (P = 0.020). G-MPI diagnostic sensitivity than ETT, P = 0.030. In terms of diagnostic accuracy, there was a significant difference between G-MPI and ETT (χ2 = 7.467, P = 0.006). Gated myocardial perfusion imaging in the diagnosis of coronary heart disease in patients with LBBB with high accuracy, and non-gated myocardial imaging and other non-invasive diagnostic techniques compared to have some advantages.