After 4 weeks for operation, compared with coronary microembolization group, the area of myocardial collagen were decreased in tongxinluo group, and the density of intramyocardial arteriole increased.

• 与微栓塞组比较，通心络干预4周后心肌间质胶原纤维沉积明显减轻，小冠状动脉密度显著增加；