[Ultrasound use in the first three-month period of pregnancy. 10 basic directions].

The aim of this paper is to provide the directions for the ultrasound study use and the understanding to make useful it in the first three months of pregnancy. We intend to do ten easy recommendations: pregnancy diagnosis confirmations, the localization of gestational sac, to check the viability of pregnancy, checking the fetal vitality, identify risk factors of miscarriage, to settle number of fetus and gestational age, look for uterine and ovary disturbances and the recognition of aneuploidy. Then after, based on the ultrasound diagnosis features you must decide the medical following of pregnancy.