CAJ | 학술논문

目的：探讨二维斑点追踪成像（STI）技术测量等容舒张期加速度指标在左室功能评价方面的作用。方法对14只健康杂种犬制作急性心肌梗死再灌注模型，分别于基础状态，结扎即刻、结扎30min、120min、180min状态及再灌注即刻、再灌注60min、120min行超声心动图检查，应用二维斑点追踪技术计算测量左室心肌径向、圆周运动等容舒张期加速度，进行比较。结果缺血节段圆周和径向的等容舒张期加速度自梗死30分钟开始降低，并随梗死时间延长而减低（ P ＜0．05），再灌注后，梗死节段STI指标明显改善（ P ＜0．05）。结论二维STI技术定量评价心肌节段性室壁运动异常为评价左室舒张功能提供有价值信息。
목적：탐토이유반점추종성상（STI）기술측량등용서장기가속도지표재좌실공능평개방면적작용。방법대14지건강잡충견제작급성심기경사재관주모형，분별우기출상태，결찰즉각、결찰30min、120min、180min상태급재관주즉각、재관주60min、120min행초성심동도검사，응용이유반점추종기술계산측량좌실심기경향、원주운동등용서장기가속도，진행비교。결과결혈절단원주화경향적등용서장기가속도자경사30분종개시강저，병수경사시간연장이감저（ P ＜0．05），재관주후，경사절단STI지표명현개선（ P ＜0．05）。결론이유STI기술정량평개심기절단성실벽운동이상위평개좌실서장공능제공유개치신식。
Objective To assess the value of speckle tracking imaging (STI) in detecting left ventricular function in ca‐nine’s acute myocardial infarction and reperfusion .Methods Fourteen dogs were used to set up the acute myocardial in‐farction and re‐perfusion model and then ,echocardiography was performed at the points of baseline status ,immediate liga‐tion ,ligation for 30 min ,120 min ,180 min ,and re‐perfusion status ,immediate re‐perfusion ,re‐perfusion for 60 min ,120 min .The myocardial radial direction of left ventricle and circular motion were measured with with two‐dimension speckle tracking imaging and compared .Results Isovolumic contraction acceleration descended in LV anterior basal segment , middle segment ,apical segment ,the left ventricular anterior septum basal segment ,middle segment ,apical segment and other segments after myocardial infarction in circumference and significantly descended compared with those before the procedure ( P <0 .05) .Aafter re -perfusion ,segmental infarction of the STI were significantly improved ( P <0 .05) . Conclusion Two‐dimensional STI technology could quantitatively evaluate the abnormalities of segmental wall motion .