Influence of heart rate on the diagnostic accuracy of dual-source computed tomography coronary angiography
Influence of heart rate on the diagnostic accuracy of dual-source computed tomography coronary angiography
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DOI：
10.1016/j.jacc.2007.09.017
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发表时间：
2007-12-18
影响因子：
24
通讯作者：
Achenbach, Stephan
中科院分区：
文献类型：
--
作者：
Ropers, Ulrike;Ropers, Dieter;Achenbach, Stephan
目的评价心率对双源ct冠状动脉造影图像质量和诊断准确性的影响。多探测器计算机断层扫描（MDCT）冠状动脉造影显示心率和图像质量成反比关系。双源CT提供了更高的时间分辨率。方法对100例患者进行DSCT （DEFINITION, Siemens Medical Solutions, Forchheim, Germany）研究。获得了对比度增强的体积数据集（两根管，120 kV, 400 ma /rot，准直64 x 0.6 mm）。评估数据集是否存在明显的冠状动脉狭窄，并对侵入性冠状动脉造影进行验证。结果在44例心率>= 65次/分的患者中，616个冠状动脉段中有566个可评估（92%），而在56例心率= 65次/分的患者中，100%（= 65次/分）和100%（22例中的22例）可评估心率
Objectives We evaluated the influence of heart rate on image quality and diagnostic accuracy of dual-source computed tomography (DSCT) coronary angiography.Background Multidetector computed tomography (MDCT) coronary angiography has demonstrated an inverse relationship between heart rate and image quality. Dual-source CT provides a higher temporal resolution.Methods One hundred patients were studied by DSCT (DEFINITION, Siemens Medical Solutions, Forchheim, Germany). A contrast-enhanced volume dataset was acquired (two tubes, 120 kV, 400 mAs/rot, collimation 64 x 0.6 mm). Datasets were evaluated concerning the presence of significant coronary stenoses and validated against invasive coronary angiography.Results In 44 patients with a heart rate >= 65 beats/min, 566 of 616 coronary segments were evaluable (92%), whereas in 56 patients with a heart rate = 65 beats/min) and 100% of patients (= 65 beats/min and 100% (22 of 22) for heart rates