Methods: In 92 cases of very-early pregnancy, the uterine endometrium were tested by means of CDPI and CDFI and the results were compared with the result of pregnancy.

• 方法：对92例处于早早孕阶段的子宫内膜行彩色多普勒能量图(CDPI)及其血流检测，并与最终妊娠结果对比观察。