摘要
目的探讨平均心率、心率波动和心率变异性对64层螺旋CT冠脉造影成像质量的影响。方法 200例患者因怀疑存在冠心病进行64层螺旋CT冠状动脉造影检查,以5分法评定系统进行影像质量评价,着重分析平均心率、心率波动和心率变异性与冠状动脉图像质量的相关性。结果 200例患者,共纳入分析血管为600支,平均心率为69.20±8.80bmp,心率波动范围1-38bmp,平均心率变异性8.50±6.75%,共有94.3%(566/600)冠状动脉图像质量满足诊断需要。平均心率,心率波动和心率变异性与冠脉图像质量均有显著相关性。平均心率越慢,心率波动范围越小,心率的变异性越小,冠脉的图像质量越高。结论 64层螺旋CT能够在较大的心率范围下提供较好的冠状动脉图像,减低心率,减少心率的变异性将有助于提高图像质量。
Objective The purpose of this study was to evaluate the effect of average heart rate,heart rate range and heart rate variability on the image quality with 64-slice spiral CT coronary angiography.Methods 200 patients underwent 64-slice coronary CT angiography,which were suspected coronary artery diseases.Image quality was performed using five score method.The detailed analysis was performed to evaluate the relationship of average heart rate,heart rate range and heart rate variability on the image quality.Results 600 coronary angiography were analyzed in 200 patients.The average heart rate was 69.20±8.80 beat per minute（heart rate rang,1～38bmp）,with a variability of 8.50±6.75%.Image quality was sufficient for diagnosis for 94.3%（566/600）of arterial segment at the best reconstruction interval.A significan correlation（P0.05） between overall image quality was found for average heart rate,heart rate range and heart rate variability.The lower average heart rate,the less heart rate range and variability,the better coronary image quality.Conclusion Coronary angiography with 64-slice spiral CT can provides best diagnostic image quality within a wide range of heart rates.and reducing average heart rate and heart rate variability in patients is beneficial in improving image quality.
出处
《中国CT和MRI杂志》
2012年第1期46-49,共4页
Chinese Journal of CT and MRI
基金
昆山市科技社会发展自主项目(项目编号:)
