The structure and principle of the LV-3 type height control valve in Japan are described. And the common troubles appeared in application of the height control valve are analyzed.
介绍了日本LV 3型高度控制阀的结构和原理，并分析了该高度控制阀在运用中出现的常见故障。
The simulated results are provided with 4-D coordinates and served as the basic data for LV motion reconstruction, thus, the LV simulator is generated based on these data for 3-D visualization of LV.
模拟结果以4-D坐标数据和3-D可视化形式输出。LV模拟器为左心室运动重建研究提供了各种测试数据，是研究工作的重要基础工具。
LV systolic function were not impaired (3 cases).
左心室收缩功能正常(3例)。
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