Obstetrics (from the Latin obstare, "to stand by") is the health profession or medical specialty that deals with pregnancy, childbirth, and postpartum period (including care of the newborn). The midwife and the obstetrician are the professionals in something.
Gynaecology or gynecology is the medical practice dealing with the health of the female reproductive systems (vagina, uterus and ovaries) and the breasts. Literally, outside medicine, it means "the science of women". Its counterpart is andrology.
3D / 4D Ultrasound
Ultrasound is an oscillating sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from 'normal' (audible) sound by differences in physical properties.
I'm a paragraph. Click here to add your own text and edit me. It’s easy. Just click “Edit Text” or double click me to add your own content and make changes to the font. I’m a great place for you to tell a story and let your users know a little more about you.