摘要
目的探讨超声定量组织多普勒速度成像技术（QTVI）评价正常胎儿心室壁运动的临床价值。方法运用彩色组织多普勒速度成像图对100例孕18-40周正常胎儿心脏进行检测，在心尖四腔图切面，对左右心室壁及室间隔的9个观察点的速度曲线进行分析，测量收缩期运动速度Vs，舒张早期运动速度Ve，舒张晚期运动速度Va，并进行分析和统计学处理。结果正常胎儿心室壁运动速度的变化趋势为基底部〉中部〉心尖部，左心室、间隔收缩期运动速度相近，右心室收缩期运动速度略高于左心室及间隔，在舒张晚期间隔与左心室的速度相近，但低于右心室。室壁运动速度随孕周增加亦增加。结论组织多普勒速度成像技术用于评价胎儿室壁运动是可行的，它安全、准确、可靠。
Objective To assess the feasibility of quantitative tissue velocity imaging （QTVI） in evaluation of myocardial velocities and myocardial velocity gradient of normal fetuses. Methods One hundred normal fetuses between 18 and 40 weeks of gestation were studied. 100 normal fetuses were divided into groups of 50 normal fetuses between 18 an 27 weeks of gestation and 50 normal fetuses between 28 and 40 weeks of gestation. From apical four-chamber view, peak velocities were measured within the basal, mid and apical parts of the interventricular septum, and the left and right free ventricular wall. The peak velocities included peak sustained systolic velocity （Vs）, peak early diastolic （Ve） and peak late diastolic velocity （Va）. Results The highest peak was obtained within the basal parts of all myocardial walls. The peak velocities within mid parts were higher than it within apical parts, and a positive correlation with advancing gestational age. Vs of left ventricle （LV） and interventricular septum （IVS） had no difference, and was lower than that of right ventricle （RV）. Va of RV and IVS had no difference, and was higher than that of LV. Conclusion QTVI evaluation is feasible and reproducible for assessing the fetal cardiac function.
出处
《中国医学影像技术》
CSCD
北大核心
2006年第12期1887-1889,共3页
Chinese Journal of Medical Imaging Technology
关键词
定量组织速度成像
胎儿
室壁运动
Quantitative tissue velocity imaging
Fetus
Ventricular wall motion
