摘要
目的：评价第二代双源CT自适应前瞻性心电触发序列扫描冠脉成像的临床应用价值。方法：回顾性分析114例第二代双源CT自适应前瞻性心电触发序列扫描冠脉成像患者的图像，其中18例患者有2周内的冠脉造影对比。结果：本组114例患者检查过程中的平均心率为（63±8）次/min，图像平均质量评分为（1.65±0.59）分，优良图像占90.35%，可诊断图像占99.12%；96.53%（1 252/1 297）的冠脉节段达到可供诊断的图像质量；平均有效辐射剂量为（6.27±1.81） mSv；诊断冠心病38例，21例支架置入术后的48枚支架的通畅性得到评价，43枚支架通畅，4枚支架内再狭窄，1枚支架内闭塞；18例72支冠脉以冠脉造影为标准，双源CT冠脉成像诊断冠脉狭窄（按支）的敏感度、特异度、阳性预测值、阴性预测值分别为95.45%、96.00%、91.30%、97.96%。结论：第二代双源CT前瞻性心电触发序列扫描是一种安全、有效、低辐射、无创的冠脉成像技术，也是一种有效评价冠脉支架通畅性的方法。
Abstract
Objective: To evaluate the value of clinical application of prospectively electrocardiography(ECG)-triggered sequential acquisition for coronary computed tomographic angiography by dual-source computed tomography. Methods: The images of prospective ECG-triggered sequential acquisition for coronary computed tomographic angiography by dual-source computed tomography of 114 patients were analyzed, 18 of them underwent coronary angiography within two weeks after CT angiography. Results: The mean heart rate of the 114 patients was (63±8) beats per minute(bpm). Image quality average score was (1.65±0.59). The rate of excellent and good image quality and rate of assessable patients was 90.35% and 99.12%. 1 297 coronary artery segments were explored. The rate of assessable segments was 96.53%. The average effective radiation doses was (6.27±1.81) mSv. Thirty-eight patients were diagnosed as coronary artery disease by dual-source CT. Forty-eight stents of 21 patients were evaluated. Forty-three stents were easy and smooth. Four stents were in-stent restenosis. One stent was in-stent occlusion. Set the results of coronary angiography as criteria, the sensitivity, specificity, positive predictive value and negative predictive value of dual-source CT coronary angiography for the diagnosis of coronary artery were respectively 95.45%, 96.00%, 91.30% and 97.96% in 72 arteries of 18 patients. Conclusion: Prospective electrocardiographic-gated transverse dual-source CT is a kind of safe, effective, low-dose and noninvasive CT coronary angiography. It is also a valuable modality for the follow-up of coronary stent patency.
关键词
冠状血管 /
体层摄影术 /
X线计算机
Key words
Coronary vessels /
Tomography /
X-ray computed
周 俊;张 婧;张晓芬;潘 燕.
双源CT自适应前瞻性心电触发序列扫描冠脉成像的临床应用[J]. 中国临床医学影像杂志. 2014, 25(5): 321-324
ZHOU Jun;ZHANG Jing;ZHANG Xiao-fen;PAN Yan.
Clinical application of prospective electrocardiographic-gated dual-source CT coronary angiography[J]. Journal of China Clinic Medical Imaging. 2014, 25(5): 321-324
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
