| 沈君,李国照,梁碧玲,洪国斌,周翠屏,王景峰,聂如琼,曾伟科,李洁婷.心电图编辑功能在64层螺旋CT冠状动脉成像中的初步应用[J].中国医学影像技术,2007,23(4):516~519 |
| 心电图编辑功能在64层螺旋CT冠状动脉成像中的初步应用 |
| ECG editing in 64-slice spiral CT coronary angiography: a preliminary application |
| 投稿时间：2006-11-03 修订日期：2007-03-28 |
| DOI： |
| 中文关键词: 冠状血管造影术 体层摄影术,X线计算机 心电描记术 心律失常 |
| 英文关键词:Coronary angiography Tomography, X-ray computed Electrocardiography Arrhythmia |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨64层螺旋CT冠状动脉造影心电图编辑功能对于改善心律失常或心电图信号不明原因故障中冠脉成像质量的作用。方法 收集22例在检查前已知心律失常或仅在检查过程中出现心律失常或检查过程中出现同步记录的心电图信号部分缺失的64层螺旋CT冠状动脉造影资料,使用心电图编辑功能,对原始心电图进行编辑,比较编辑前后重建的冠状动脉图像质量。结果 22例中,检查前已知的心律失常有:4例为房室传导阻滞,4例为房颤,4例为房性早搏,2例为偶发室性早搏,共14例;检查前未知仅在检查过程中出现心律失常的有:2例房性早搏,4例房颤,1例病态窦房结综合征,共7例;检查过程中未明原因的心电图信号部分缺失1例。心电编辑前,由于心律失常,造成重建的冠脉图像模糊、缺失、显著的阶梯状伪影,可评估的冠脉节段为53％,心电编辑后图像质量改善,可评估的冠脉节段达到96％(χ2＝161.4826,P<0.001)。结论 在检查前或者检查过程中出现的心律失常或者不明原因出现的心电信号的异常,使用心电图编辑功能,能显著提高冠脉成像质量。 |
| 英文摘要: |
| Objective To investigate the value of ECG editing in improving the image quality of 64-slice spiral CT coronary angiography in the presence of arrhythmia or unidentify synchronously record ECG error. Methods Retrospectively ECG-gated MSCT coronary angiography of 22 patients with previously known arrhythmia or arrhythmia merely occurred during examination or unindentify ECG mechanic error happened during examination were included. The coronary angiography were obtaind respectviely using original synchronously record ECG or using the ECG after edited with the built-in ECG editing software. The image quality of reconstructed coronary arteries was compared before and after the editing of synchronously record ECG. Results Of 22 patients, 14 had previously known arrhythmia including 4 auriculo-ventricular block, 4 atrial fibrilation and 2 occasional premature ventricualr contraction; 7 had arrhythmia occurred during examination including 2 atrial fibrilation and 4 atrial fibrilation and 1 sick sinus syndroms; 1 had unindentified paritally ECG misssing. The arrhythmia and ECG partially missing resulted in blurring, segemental missing, significant stepladder artifacts of reconstructed coronary arteries using original ECG and 53% (172/325) coronanry segements were assessable for diagnosis. After ECG editing, the image quality of coronary segements was obviously improved with an increase of the assessable sgements to 96% (313/325). There was significantly statistical difference between them (χ2=161.4826, P<0.001). Conclusion The ECG editing could be used to markedly improve the image quality of MSCT coronary angiography in the presence of arrhythmia during the examination or unkown mechanic ECG failure. |
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