| 孙丹丹,任卫东,陈昕,唐力,马春燕,李楠,张立敏.实时三维超声心动图评价继发孔型房间隔缺损面积在心动周期各时相的动态变化特征[J].中国医学影像技术,2009,25(2):233~236 |
| 实时三维超声心动图评价继发孔型房间隔缺损面积在心动周期各时相的动态变化特征 |
| Evaluation of the dynamic characteristics of secundum atrial septal defect area during cardiac phases using real-time three-dimensional echocardiography |
| 投稿时间：2008-08-27 修订日期：2008-10-08 |
| DOI： |
| 中文关键词: 心脏间隔缺损,心房 超声心动描记术,三维 |
| 英文关键词:Heart septal defects, atrial Echocardiography, three-dimensional |
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| 中文摘要: |
| 目的 应用实时三维超声心动图(RT-3DE)技术观察继发孔型房间隔缺损(S-ASD)面积的大小及其在心动周期各时相的动态变化特征,并评价房间隔缺损的面积变化率及其影响因素。方法 应用RT-3DE技术对30例S-ASD患者进行实时三维成像,测量心动周期中各帧S-ASD的面积,并由此计算出各帧面积所占最大面积的百分比及S-ASD面积变化率,并分析S-ASD面积变化率与年龄、心率、分流量(Qp/Qs)、平均面积之间有无相关性。结果 在心动周期各时相中,S- ASD面积收缩末期最大(6.37±1.17)cm2, 舒张末期最小(3.17±0.68)cm2;等容舒张期、等容收缩期、舒张晚期,S-ASD面积的变化较小;舒张中期及收缩中、晚期,S-ASD面积的变化较大。S-ASD面积的变化率与年龄呈低度负相关(r=－0.577, P＜0.05),与Qp/Qs、心率、平均面积无显著相关性。结论 S-ASD的面积在心动周期各时相中有典型的动态变化特征,RT-3DE可直观地显示并动态地探测这种变化特征。 |
| 英文摘要: |
| Objective To observe the dynamic characteristics of secundum atrial septal defect (S-ASD) area during cardiac phases and to investigate factors which influence S-ASD dynamics by real-time three-dimensional echocardiography (RT-3DE). Methods Thirty patients with S-ASD were examined using RT-3DE. Each defect area during cardiac phases was measured, and the ratio between defect area and maximum area was calculated. The area change percentage of S-ASD was analyzed, as well as its correlation with age, heart rate, pulmonary to systemic flow (Qp/Qs) and the mean area of S-ASD. Results The defect area was the largest in end systole (6.37±1.17)cm2, while the smallest in end diastole (3.17±0.68)cm2. The defect area changed slightly during isovolumetric diastole, isovolumetric systole and end diastole, but changed obviously during mid-systole, mid-diastole and end systole. There was slight inverse correlation between the area change percentage and the age of patients (r=－0.577, P＜0.05), but the mean area of S-ASD, the Qp/Qs and the heart rate showed no significant influence on the area change percentage. Conclusion RT-3DE can show the dynamic characteristics of S-ASD during cardiac phases directly and dynamically. |
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