目的：建立心肌慢性缺血动物模型，探讨超声背向散射积分（IBS）和多普勒组织成像（DTI）技术检测慢性心肌缺血的价值。
Objective: To establish porcine chronic ischemic myocardium model and to evaluate ultrasonic integrated backscatter(IBS) and Doppler tissue imaging(DTI) in detecting this model.
目的：建立慢性心肌缺血大鼠动物实验模型，探讨动物模型构建的关键技术点。
AIM: to establish a rat model of chronic myocardial ischemia and probe into the experimental techniques for constructing the animal models.
目的：探讨自体骨髓单个核细胞心肌移植对猪慢性缺血心肌心功能的改善作用。
AIM to investigate the improving effect of intramyocardial transplantation of autologous bone marrow mononuclear cells on the cardiac function of swine with chronic ischemic myocardium.
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