速度向量成像评价左室型单心室短轴收缩功能  

Evaluation of short axis systolic function of single left ventricles using velocity vector imaging

作　　者：赵艳君 张玉奇[1] 张志芳[1] 钟舒文 陈丽君[1] 殷璐曼 王珊珊 

机构地区：[1]上海交通大学医学院附属上海儿童医学中心心内科,200127

出　　处：《中华超声影像学杂志》2012年第2期99-103,共5页Chinese Journal of Ultrasonography

基　　金：上海市科委医学引导类项目（10411965300）;上海市卫生局科研项目（2008023）;上海交通大学医学院科技基金项目（YZ1045）;2010年上海交通大学医学院附属上海儿童医学中心院基金

摘　　要：目的 观察左室型单心室短轴运动情况,评价速度向量成像（velocity vector imaging,VVI）技术估测左室型单心室患儿心室短轴收缩功能的价值.方法 左室型单心室患儿14例（单心室组）及正常儿童14例（对照组）为研究对象,应用VVI技术对主心腔短轴乳头肌水平室壁周向和径向应变及应变率进行分析.结果 单心室组前间隔、前壁、侧壁、下壁、后间隔节段的周向应变较对照组相应节段明显减低（均P ＜0.05）.单心室组前间隔、前壁、侧壁、后壁、后间隔节段的周向应变率较对照组相应节段明显减低（均P ＜0.05）.对照组的室间隔应变及应变率显著高于其余节段,差异有统计学意义（P＜0.05）.单心室组各节段的径向应变及应变率较对照组相应节段明显减低,两组间差异具有统计学意义（P ＜0.05）.对照组乳头肌水平各节段径向收缩期峰值应变及应变率差异无统计学意义（P＞0.05）.结论 左室型单心室患儿存在周向和径向收缩功能不全,VVI技术能定量评价左室型单心室短轴节段室壁的收缩功能.Objective To investigate the short axis systolic function of children with single-left ventricle（LV）,and to appraise the clinical value of velocity vector imaging（VVI） on assessing it.Methods The study group consisted of 14 patients with single-LV.The control group consisited of 14 age-matched normal children.VVI was used to analyse the circumferential and radial strain and strain rate of regional single-LV at the level of papillary muscle.Results Compared with values in control group,single-LV circumferential strain values were significantly lower in anterior septum,posterior septum,anterior wall,lateral wall and inferior wall（all P 〈0.05）.Single-LV circumferential strain rate values were significantly lower in anterior septum,posterior septum,anterior wall,lateral wall and posterior wall compared with controls（all P 〈0.05）. In control group,circumferential strain and strain rate were higher in inferior septum and anterior septum compared with other segments（ P 〈0.05）.Single-LV radial strain values were significantly lower in all segments compared with values in control （P 〈 0.05）.In control group,radial strain and strain rate of papillary muscle level showed no significantly difference（ P 〉0.05）.Conclusions Circumferential and radial systolic ventricular function are impaired in children with single-LV.VVI can be used as a quantitative tool in evaluating the short axis systolic function of single-LV.

关 键 词：超声心动描记术 单心室 心室功能 左 速度向量成像 

分 类 号：R445.1[医药卫生—影像医学与核医学]