【摘要】 目的:探讨时间空间相关成像技术(STIC)在胎儿左室容积和左室收缩功能测量中的应用价值。方法:对48例孕龄22周~32周正常胎儿心脏同时应用(STIC)、二维超声心动图(2DE)双平面Simpson法对其左室舒张末期容积(LVEDV)、收缩末期容积(LVESV)、每搏输出量(LVSV)及射血分数(LVEF)等容积及功能指标进行测定,分析其测量结果。结果:应用STIC技术测得LVEDV为(1.45±0.65)mL、LVESV为(0.48±0.26)mL、LVSV为(0.98±0.44)mL、LVEF为(67.38±8.46)%。应用2DE双平面Simpson法测得LVEDV为(1.33±0.60)mL、LVESV为(0.43±0.26)mL、LVSV为(0.90±0.40)mL、LVEF为(69.07±10.14)%。STIC法与2DE Simpson法所测LVEDV、LVESV间差异无显著性(P>0.05),并均有显著的相关性(r=0.976、0.915、P<0.001)。STIC法与2DE Simpson法所测LVSV、LVEF值差异无显著性(P>0.05),相关性较好(r=0.709,0.940,P<0.001)。结论:时间空间相关成像技术(STIC),可准确测量胎儿左心室容积,评价胎儿左心收缩功能,有重要的应用价值。更多还原

【Abstract】 Objective: To assess the value of application of the STIC in measurement of fetal left ventricular function. Methods: In48 cases of gestational age 22 to 32 weeks normal fetal heart,the LV end diastolic volume( LVEDV),LV end systolic volume(LVESV),the LV stroke volume( LVSV) and left ventricular ejection fraction( LVEF) were measured by STIC. At the same time,the LVEDV,LVESV,LVSV,LVEF from 2DE using Simpson’s method were measured too,and the results were analgzed. Results: LVEDV was( 1. 45 ± 0. 65) mL,LVESV was( 0. 48 ± 0. 26) mL,LVSV was( 0. 98 ± 0. 44),and LVEF was( 67. 38 ± 8. 46) % from STIC. LVEDV was( 1. 33 ± 0. 60) mL,LVESV was( 0. 43 ± 0. 26) mL,LVSV was( 0. 90 ± 0. 40),and LVEF was( 69. 07 ± 10.14) % from 2DE Simpson’s method. There were no statistically significant differences between STIC and 2DE for LVEDV,LVESV( P> 0. 05) and there was excellent correlation between STIC and 2DE for LVEDV,LVESV( r = 0. 976,0. 915,P < 0. 001). There were no statistically significant differences between STIC and 2DE for LVSV,LVEF( P > 0. 05). There was positive correlation between STIC and 2DE for LVSV,LVEF( r = 0. 709,0. 940,P < 0. 001). Conclusion: STIC can accurately measure and evaluate fetal left ventricular volume and left ventricular systolic function,and has important application value.更多还原