中华超声影像学杂志
中華超聲影像學雜誌
중화초성영상학잡지
CHINESE JOURNAL OF ULTRASONOGRAPHY
2010年
1期
5-7
,共3页
超声心动描记术%心室功能,右%二尖瓣环位移%斑点追踪显像
超聲心動描記術%心室功能,右%二尖瓣環位移%斑點追蹤顯像
초성심동묘기술%심실공능,우%이첨판배위이%반점추종현상
Echocardiography%Ventricular function,left%Mitral annular displacement
目的 分析超声二维斑点追踪技术测定的二尖瓣环收缩期位移(MAD)与左室射血分数(LVEF)的相关性,探讨MAD评价左室收缩功能的可行性.方法 选择96例观察对象,其中健康对照组30例,患者66例.记录心尖四腔及二腔观二维图像并输入Qlab6.0工作站,自动获取二尖瓣环侧壁(MADlat)、后室间隔(MADsep)、前壁(MADant)、下壁(MADinf)四个位点的MAD以及心尖四腔观二尖瓣环连线中点(mid)处MAD,并计算MADmid与左室舒张末长径百分比(MADmid%).应用实时三维超声心动图方法获取LVEF.分析各MAD参数与LVEF之间的关系.结果 ①MADsep、MADlat、MADant、MADinf和MADmid之间差异无统计学意义.②各位点MAD均与LVEF值显著相关,MADmid和MADmid%与LVEF的相关系数分别为0.87和0.89(P<0.01).③MADmid评价LVEF>50%的截断点值为8.9 mm,敏感性为95%,特异性为80%;MADmid%评价LVEF>50%的截断点值为10.9%,敏感性为95%,特异性为85%.结论 应用超声二维斑点追踪技术测定的二尖瓣环MAD与LVEF存在良好的相关性,有望成为评价左室收缩功能的新方法.
目的 分析超聲二維斑點追蹤技術測定的二尖瓣環收縮期位移(MAD)與左室射血分數(LVEF)的相關性,探討MAD評價左室收縮功能的可行性.方法 選擇96例觀察對象,其中健康對照組30例,患者66例.記錄心尖四腔及二腔觀二維圖像併輸入Qlab6.0工作站,自動穫取二尖瓣環側壁(MADlat)、後室間隔(MADsep)、前壁(MADant)、下壁(MADinf)四箇位點的MAD以及心尖四腔觀二尖瓣環連線中點(mid)處MAD,併計算MADmid與左室舒張末長徑百分比(MADmid%).應用實時三維超聲心動圖方法穫取LVEF.分析各MAD參數與LVEF之間的關繫.結果 ①MADsep、MADlat、MADant、MADinf和MADmid之間差異無統計學意義.②各位點MAD均與LVEF值顯著相關,MADmid和MADmid%與LVEF的相關繫數分彆為0.87和0.89(P<0.01).③MADmid評價LVEF>50%的截斷點值為8.9 mm,敏感性為95%,特異性為80%;MADmid%評價LVEF>50%的截斷點值為10.9%,敏感性為95%,特異性為85%.結論 應用超聲二維斑點追蹤技術測定的二尖瓣環MAD與LVEF存在良好的相關性,有望成為評價左室收縮功能的新方法.
목적 분석초성이유반점추종기술측정적이첨판배수축기위이(MAD)여좌실사혈분수(LVEF)적상관성,탐토MAD평개좌실수축공능적가행성.방법 선택96례관찰대상,기중건강대조조30례,환자66례.기록심첨사강급이강관이유도상병수입Qlab6.0공작참,자동획취이첨판배측벽(MADlat)、후실간격(MADsep)、전벽(MADant)、하벽(MADinf)사개위점적MAD이급심첨사강관이첨판배련선중점(mid)처MAD,병계산MADmid여좌실서장말장경백분비(MADmid%).응용실시삼유초성심동도방법획취LVEF.분석각MAD삼수여LVEF지간적관계.결과 ①MADsep、MADlat、MADant、MADinf화MADmid지간차이무통계학의의.②각위점MAD균여LVEF치현저상관,MADmid화MADmid%여LVEF적상관계수분별위0.87화0.89(P<0.01).③MADmid평개LVEF>50%적절단점치위8.9 mm,민감성위95%,특이성위80%;MADmid%평개LVEF>50%적절단점치위10.9%,민감성위95%,특이성위85%.결론 응용초성이유반점추종기술측정적이첨판배MAD여LVEF존재량호적상관성,유망성위평개좌실수축공능적신방법.
Objective To explore the value of peak systolic displacement of mitral annulus in evaluating left ventricular systolic function by speckle tracking imaging(STI).Methods The study population consisted of 96 subjects. The apical four-chamber view and two-chamber view were obtained and the systolic displacements of mitral annulus were measured at lateral, spetum, anterior and inferior mitral annulus (MADlat, MADsep, MADant, MADinf).The systolic displacements of mitral annulus midpoint (MADmid) and its ratio to the length of left ventricle at end-diastole(MADmid%) were calculated.Left ventricular ejection fraction(LVEF) was measured by three-dimensional echocardiography.The correlation of these displacements parameter with LVEF was analyzed.Results ① There was no significant difference among MADsep, MADlat, MADant, MADinf and MADmid(P>0.05).②There was significant correlation between LVEF and these parameters (P <0.01) ,and MADmid and MADmid% showed an excellent correlation with LVEF (r = 0.87 and 0.89 respectively, P<0.01).③The cut-off value of MADmid for LVEF>50% was 8.9 mm with a sensitivity of 95% and a specificity of 80% while the cut off value of MADmid% for LVEF>50% was 10.9% with a sensitivity of 95% and a specificity of 85%.Conclusions Displacement of mitral annulus by STI showed an excellent correlation with LVEF, and it may be a new promising method for routine evaluation of left ventricular systolic function with its high feasibility, simplicity and accuracy.
