thick fluid, serves to prevent air bubbles from forming and helps conduct sound waves from the transducer and into the patient’s body for greater efficiency and better imaging. Also, Ultrasound waves are impenetrable through bone and gas so the ultrasound is limited in use for examining regions surrounded by bones, adipose tissue [body fat], gas or air. The advancement of medical testing and prenatal care there are many precautionary measures that can be used to make sure our babies are at a minimal risk of several abnormalities and birth defects. These measures should be taken serious otherwise you could be at risk.