The far-field imaging properties of a high index microsphere lens spatially separated from the object are experimentally......

目的 探讨彩色多普勒超声诊断急性肠缺血的临床应用价值.方法 对28例可疑急性肠缺血患者行彩色多普勒超声检查,包括二维成像和彩色......