| 贺声,赵文锐,朱世华,沈燕华.组织多普勒成像定量评估心梗患者左室收缩功能的可靠性[J].中国医学影像技术,2002,18(5):446~448 |
| 组织多普勒成像定量评估心梗患者左室收缩功能的可靠性 |
| A Trial of Quantitatively Estimating the Left Ventricular Systolic Function in the Patients of Myocardial Infarction with Doppler Tissue Imaging |
| 投稿时间：2002-01-12 |
| DOI： |
| 中文关键词: 多普勒组织成像 发射型计算机断层扫描 心肌梗塞 |
| 英文关键词:Doppler tissue imaging Emission computed tomography Myocardial infarction |
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| 中文摘要: |
| 目的 探讨DTI收缩指标的变化与心肌缺血程度的关系。方法 观察对象共54人,观测项目为患者左室壁节段及二尖瓣环DTI-s波形改变,并与相应的ECT指标进行了比较。 结果 ECT室壁节段放射性测值心梗组非缺血区与对照组差别不显著,分别为0.76±0.2~0.98±0.1与0.77±0.2~0.96±0.1,缺血区则明显减低0.31±0.2~0.88±0.2(P<0.05)。ECT心血池显像心梗组左室射血分数为(46.6±8.9)%,较对照组(64.4±9.7)%低(P<0.05),心梗组反映左室整体功能的二尖瓣环处平均DTI-s波幅为8.4±1.6~10.5±3.8cm/s,也明显低于对照组12.5±2.2~16.6±4.9cm/s,s波速度高低与ECT-EF有良好的线性关系(r=0.67,P<0.05);同时心梗组缺血节段的DTI-s波速度4.8±0.5~6.8±1.5cm/s明显低于对照组6.6±1.5~12.5±3.8cm/s(P<0.05),其DTI-s波幅的高低与放射性的疏密成正相关(r=0.68,P<0.05)。结论 如以ECT结果作为判断标准,DTI-s波用于缺血壁段及左室收缩功能定量评价有较高的可靠性。 |
| 英文摘要: |
| Objective To investigate the relationship between the systolic indexes of DTI and the extents of myocardial ischemia in patients with cardiac infarction. Methods Fifty-four patients were divided into cardiac infarction and control groups. In these patients, DTI systolic waves(DTI-s) of LV segments and of mitral annuli were observed, and compared with the items of ECT. Results ECT showed that the radioactions of the non-ischemic segment and the control group were from 0.76±0.2 to 0.98±0.1 and from 0.77±0.2 to 0.96±0.1 respectively, higher than the ischemic segments with the radioaction being from 0.31±0.2 to 0.88±0.2(P<0.05). The cardiac infarction group not only had a lower EF than that of the control group, with EF being (46.6±8.9)% and (64.4±9.7)% in ECT(P<0.05)respectively, but also had lower amplitudes of DTI-s at mitral annuli, ranging from 8.4±1.6cm/s to 10.5±3.8cm/s,than those of the control group, from 12.5±2.2cm/s to 16.6±4.9cm/s.The correlation between the amplitudes of DTI-s at mitral annuli and the ECT-EF was significant (r=0.67,P<0.05). The amplitudes of DTI-s in the ischemic segments were from 4.8±0.5cm/s to 6.8±1.5cm/s, much lower than from 6.6±1.5cm/s to 12.5±3.8cm/s in the control group, in which the amplitudes of DTI-s in the ischemic segments bore a positive relativity with the local radioaction (r=0.68,P<0.05). Conclusion Compared to the measurements of ECT, DTI-s could be used as a reliable indictor in quantitatively estimating the systolic function of the LV and the ischemic segments of the patients with heart infarction. |
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