2D-STI评价冠状动脉左前降支供血区心肌纵向应变

doi:10.3969/j.issn.1000-8535.2016.04.021

广州医药 ›› 2016, Vol. 47 ›› Issue (4): 65-67.DOI: 10.3969/j.issn.1000-8535.2016.04.021

2D-STI评价冠状动脉左前降支供血区心肌纵向应变

杨毓雯¹, 柳建华¹, 李沿江², 魏宜霖¹, 宁兰兰¹

1 广州市第一人民医院超声医学科(广州 510180)
2 南昌大学第二附属医院超声诊断科(南昌 330006)

收稿日期:2016-04-22 出版日期:2016-07-20 发布日期:2021-12-02
通讯作者: 柳建华,liujianhua666666@163.com
基金资助:
广州市医药卫生科技项目(20141A010006);广东省省级科技计划项目-公益研究与能力建设专项资金项目(2014A020212374);广东省自然科学基金面上项目(S2013010016277)

Evaluation of myocardial longitudinal strain in the area supplied by the left anterior descending coronary arteries via two dimensional speckle tracking image

Yu-wen Yang¹, Jian-hua Liu¹, Yan-jiang Li², Yi-lin Wei¹, Lan-lan Ning¹

1 Department of Medical Ultrasound, Guangzhou First Municipal People's Hospital Affiliated to Guangzhou Medical University, Guangzhou 510180, China
2 Department of Medical Ultrasound, the Second Affiliated Hospital of Nanchang University, Nanchang 330006, China

Received:2016-04-22 Online:2016-07-20 Published:2021-12-02

摘要/Abstract

摘要： 目的采用二维斑点追踪技术(2D-STI)检测冠状动脉左前降支供血区心肌纵向应变,探讨其评估缺血心肌局部收缩功能的价值。方法使用2D-STI检测不同狭窄程度(＜50%、50%~75%、＞75%)及未见明确狭窄的左前降支供血区心肌纵向应变参数:心内膜下、心外膜下及区域心肌收缩期纵向应变峰值-LS-endo、LS-epi、LS-Territorial,计算收缩期心肌跨壁纵向应变(LS-mural)。观察PCI术后供血区心肌纵向应变的变化。结果各组内LS-endo均高于对应的LS-epi(均P<0.01)。随着左前降支狭窄程度增加,LS-endo、LS-epi、LS-Territorial、LS-mural逐渐减低(均P<0.01)。术后LS-endo、LS-epi、LS-Territorial逐渐增高,LS-mural先增高后缓慢减低再增高。结论 2D-STI可定量检测不同层次的心肌纵向应变,反映心肌局部收缩功能,为早期识别缺血心肌、评价PCI术后疗效提供参考依据。

关键词: 二维斑点追踪技术, 缺血心肌, 纵向应变

Abstract: Objective To detect myocardial longitudinal strain in the area supplied by left anterior descending coronary artery (LAD) via two dimensional speckle tracking image (2D-STI), and to investigate its estimated value of myocardial systolic function of ischemic myocardium. Methods Detection of myocardial longitudinal strain parameters in the area supplied by the LAD with different stenosis degree(＜50%、50%~75%、＞75%) and no definite stenosis via 2D-STI:subendocardial longitudianl strain (LS-endo), subepicardial longitudianl strain (LS-epi) and territorial longitudianl strain (LS-Territorial). Calculate transmural longitudinal strain (LS-mural) in the systole.Then observe the changes of myocardial longitudinal strain in the blood supply area after percutaneous coronary interventional therapy (PCI). Results LS-endo, LS-epi, LS-Territorial and LS-mural gradually decrease with the increase of LAD stenosis (all P<0.01). After operation, LS-endo, LS-epi and LS-Territorial increase progressively (all P<0.01). LS-mural increases first and then decreases and finally increases slowly. Conclusion Layer-specific quantification of myocardial longitudinal strain by 2D-STI may reveal the regional myocardial systolic function. It is useful to identify the ischemic myocardium in the early stage and evaluate the treatment effect of PCI.

Key words: Two Dimensional Speckle Tracking Image, Ischemia myocardium, Longitudinal strain

杨毓雯, 柳建华, 李沿江, 魏宜霖, 宁兰兰. 2D-STI评价冠状动脉左前降支供血区心肌纵向应变[J]. 广州医药, 2016, 47(4): 65-67.

Yu-wen Yang¹, Jian-hua Liu¹, Yan-jiang Li², Yi-lin Wei¹, Lan-lan Ning¹. Evaluation of myocardial longitudinal strain in the area supplied by the left anterior descending coronary arteries via two dimensional speckle tracking image[J]. Guangzhou Medical Journal, 2016, 47(4): 65-67.

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2D-STI评价冠状动脉左前降支供血区心肌纵向应变

Evaluation of myocardial longitudinal strain in the area supplied by the left anterior descending coronary arteries via two dimensional speckle tracking image

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