呼吸屏气训练对冠状动脉CTA 成像质量的研究

目的：探讨呼吸屏气训练对Flash双源冠状动脉C T A成像质量的影响。方法200例需要行冠状动脉C T A检查者，检查前对患者进行呼吸屏气训练，据屏气效果分为A、B两组，检查结束后对图像质量进行评价。结果200例患者均顺利完成检查，A组150例，屏气效果佳，图像质量主观评价1级108例，2级29例，3级13例；B组50例，屏气效果欠佳，1级5例，2级33例，3级12例，组间差异具有统计学意义（ P ＜0．05）。结论严格的呼吸屏气训练及良好的屏气效果会减少冠状动脉CTA成像的运动伪影，提高图像质量。

Effects of breathing training on the quality of coronary CT angiography

Objective To explore the effects of breathing training on the imaging quality of the dual-source CT coronary angiography （CTCA） .Methods 200 patients with suspected coronary artery disease underwent CT coronary angiography （CTCA） ,and were divided into two groups according to breath hold effect .We evaluated the image quality after the in-spection .Results All patients were successfully completed the examination ,150 cases in group A ,whose breathless effects was good ,the subjective image quality evaluation was respectively grade Ⅰ in 108 cases ,grades Ⅱ in 29 cases and grades Ⅲ in 13 cases ,50 cases in group B ,whose breathless is poor ,the subjective image quality evaluation was respec-tively grade Ⅰ in 5 cases ,grades Ⅱ in 33 cases ,grades Ⅲ in 12 cases ,with statistic significant of differences between the groups （ P 〈0 .05） .Conclusion Strict breathing training and good breath effect will reduce motion artifacts in CTA ima-ging of coronary artery angiography .