Pathological staining and image analysis were used to determine the perimeter and the area of left ventricular cavity, and myocardial nuclei number and collagen content per unit area;

病理染色图象分析测定左室腔周长和面积、单位面积内心肌细胞核数、单位面积内胶原的含量；

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Objective:To evaluate the basic characteristics and effects of a novel polymer echo contrast agent on the left ventricular cavity and myocardial opacification with experimental animal study.

目的观察自制新型多聚体超声造影剂的基本特性及其对实验犬左心室及心肌增强显像的效果。

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