Unitedâs iPhone App â How to Change Your Flight for Free. All airlines need to model their mobile app after Unitedâs iPhone App and offer to change your flight for free1. When you need a United Airlines flight change, there is no better way than to use Unitedâs Mobile App. It is one of the most useful travel tools I haveâ¦when I am flying on United that is.
English-born physicist John Wild (1914â2009) first used ultrasound to assess the thickness of bowel tissue as early as 1949; he has been described as the father of medical ultrasound. Subsequent advances in the field took place concurrently in several countries.
Ultrasound in Pregnancy Ultrasound is a technique that uses sound waves to show a picture of a baby (fetus) in the uterus. Because it uses sound waves instead of radiation, ultrasound is safer than X-rays.Ultrasound provides important information about the health of the fetus and conditions in the uterus.This information can guide a health care providerâs plans for a pregnant woman and improve the outcome of pregnancy.ltrasound provides important information about the health of the fetus and conditions in the uterus. This information can guide a health care providerâs plans for a pregnant woman and improve the outcome of pregnancy.