.(1) To prospectively evaluate the effect of heart rate, heart rate variability, and calcification dual-source computed tomography (CT) image quality and to prospectively assess diagnostic accuracy of dual-source CT for coronary artery stenosis. by using invasive coronary angiography as the reference standard.前瞻性评价心率、心率变异性及钙化双源计算机断层扫描成像质量的影响及对冠状动脉狭窄的双源性冠状动脉狭窄诊断的准确性评价。以侵入性冠状动脉造影为参照标准。(2) Chest radiography plays an essential role in the diagnosis of thoracic disease and is the most f
