双源CT冠状动脉成像最佳心电脉冲窗范围与心率的关系及对放射剂量的影响
쌍원CT관상동맥성상최가심전맥충창범위여심솔적관계급대방사제량적영향
Relation between the range of optimum ECG-pulsing window and heart rate:effect on radiation dose at coronary dual-source CT angiography
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