摘要
目的 对比观察谐波成像 (HI)与基波成像 (FI)对胎儿超声心动图图像质量的影响与差别。方法 对孕龄为 1 6～ 41周的 58名胎儿进行了 59次胎儿超声心动图检查 ,在FI及HI状态下对心脏瓣膜 ,左、右房室 ,主动脉 ,肺动脉 ,左室流出道及右室流出道的显示清晰度及图像质量进行评分 (1～ 3分 ) ,对照分析FI与HI成像状态下图像质量的差异。结果 2 8次胎儿超声心动图声窗良好 ,31次声窗条件不佳。所有 58例胎儿应用HI后所观察的图像质量评分均高于FI(2 .73± 0 .43vs 2 .1 6± 0 .69,P <0 .0 0 1 )。不同声窗条件下FI与HI状态之间图像质量评分差异有显著性意义 (P <0 .0 0 1 )。两个观察者之间评分相关系数为 0 .74(P <0 .0 0 1 )。结论 HI技术明显改善了胎儿超声心动图对胎儿的心血管结构的显示分辨力和图像质量 。
Objective To directly compare the quality of harmonic imaging (HI) and fundamental imaging (FI) in fetal echocardiography and to determine any differences in image quality between the two modalities. Methods Fetal echocardiograms were performed by using FI and HI in 58 fetuses, image quality and visualization of left and right atria, left and right ventricles, mitral and tricuspid valves, aortic and pulmonary valves, left and right ventricular outlets were evaluated and compared between FI and HI.Results Mean HI scores were higher than mean FI scores for all the cardiovascular structures ( 2.73 ± 0.43 vs 2.16 ± 0.69 , P< 0.001 ). Compared with FI, HI improved the image quality and visualization of fetal cardiac structures in subjects with good ( 2.73 ± 0.43 vs 2.88 ± 0.32 ,P< 0.001 ) and suboptimal ( 1.65 ± 0.41 vs 2.58 ± 0.47 ,P< 0.001 ) echocardiographic windows. The interobserver correlation coefficient for the grading scores was 0.74 (P<0.001 ). Conclusions Harmonic imaging enhances and improves the image quality of fetal echocardiography, it has important potential role in cardiac imaging in the fetus.
出处
《中华超声影像学杂志》
CSCD
2002年第11期673-675,共3页
Chinese Journal of Ultrasonography
