超声背向散射技术对评价慢性心肌梗死血管重建术后的临床价值  

Clinical Value Of Integrated Backscatter In Evaluating Chronic Infracted Myocardium After Revascularization

作　　者：尹凤英[1] 张国阳[1] 朱俊华[1] 

机构地区：[1]宁波市第一医院超声科,浙江省宁波市315010

出　　处：《中国超声诊断杂志》2005年第12期904-906,共3页Chinese Journal of Ultrasound Diagnosis

摘　　要：目的应用心肌背向散射积分技术在梗死心肌血管重建术前评价功能异常心肌的存活性,从而预测术后心功能的恢复。方法对乳头肌水平左室短轴切面记录56例慢性心肌梗死患者的超声背向散射图像,比较经皮冠状动脉球囊成形术(PTCA)治疗前后心肌背向散射积分周期变异(CVIB)和标化CVIB(CVIB%)的变化。结果按不同阶段分组比较,经二维超声心动图判断为存活心肌的CVIB及CVIB%术后较术前有显著性的提高。若以CVIB%增加(△CVIB%)>10为判断存活心肌的标准,则敏感性、特异性、准确性分别为81.3%、87.5%、83.3%。结论对于慢性心肌梗死患者CVIB和CVIB%可作为评价存活心肌的定量、客观指标,对预测血管重建术后心脏功能的恢复和确定治疗方案具有较高的临床应用价值。Objective By applying myocardial Integrated Backscatter to evaluate myocardial vialility in patients with the segments of chronic left ventricular ischem icdysfunction before revascularition .we use myocardial Integrated Backscatter. and furthermore, to predict cardiac functional restoration after operation. Methods Fifty six patients with OMI were studied by uhrasonie integrate backseatter before and 6 weeks after percutaneous transluminal coronary angioplasty （PTCA） .CVIB, and CVIB of 1 segment, in parasternal papillary short axis view were analyzed. Results CVIB and CVIB% increased significantly 6 weeks after PTCA. With CVIB% increasing more than 10 as the standard for diagnosing myocardium, the sensitivity, specificity, and accuracy were 81.35, 87.5%, and 83.3% respectively. Conclusions CVIB or CVIB% were valuable to diagnosing myocardium quantitavely and objectively. There＇s a relatively high clinic value in predicting cardiac functional restoration after operation, and to confirm the treatment.

关 键 词：背向散射 心肌梗死 存活心肌 

分 类 号：R972[医药卫生—药品] R445.1[医药卫生—药学]