A1 a system of communication consisting of sounds, words, and grammar, or the system of communication used by people in a particular country or type of work: She does research into how children acquire language.
2. Dating Scan. When is it carried out: When there are no problems, you will have to undergo two ultrasounds during your pregnancy. A dating scan will be the first scan that you undergo. The scan is booked atbetween 10 weeks and 13 weeks plus six days of pregnancy. What happens in the process: During this scan, the sonographer will apply gel on your tummy and move a hand-held device over your skin. The device is called a transducer.
First trimester ultrasound examination is done to evaluate the presence, size, number and location of the pregnancy. Ultrasound can also be used for first-trimester sonographic genetic screening, as well as screening for any abnormalities of your uterus or cervix. If your health care provider suspects a multiple pregnancy, an ultrasound might be done to confirm the number of babies. 2  Evaluate your baby's growth. 3  Your health care provider can use ultrasound to determine whether your baby is growing at a normal rate.