Objective: to evaluate the hemodynamic changes of the left internal mammary artery (LIMA) preoperative and postoperative coronary artery bypass graft (CABG) with color Doppler flow imaging (CDFI).

目的：应用彩色多普勒超声检测评价冠状动脉架桥术(CABG)前后左侧内乳动脉(lima)桥的血液动力学变化。

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ObjectiveThe left internal mammary artery (LIMA) has been shown to improve the outcome of coronary artery bypass grafting (CABG) and become the gold standard graft.

目的已证明左内乳动脉(LIMA)可提高冠状动脉旁路移植术(CABG)的疗效，并成为CABG的金标准。

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Objective: Color Doppler ultrasonography (CDU) study internal mammary artery (IMA) dynamic changes for left anterior coronary artery bypass graft operation.

目的：研究冠状动脉搭桥术前后乳内动脉(IMA)血流动力学的改变，为临床提供安全可靠的检查方法。

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