tips for pregnant women : How an ultrasound scan is performed ?

Every pregnant women want to have information about ultrasound scan and how it is performed ?


Before having an ultrasound scan , you may be asked to prepare for the procedure.For example ,before you have a fetal baby) scan , or a scan of an organ in your pelvic area ,you may be asked to fill your bladder by drinking water and not passing urin until after the test .For other procedures,such as scans of the gallbladder or pancreas ,you may be asked not to eat or drink for up to four hours before the test .


The scan :

There are three main types of ultrasound scan :
  • external ultrasound
  •  internal ultrasound
  • endoscopic ultrasound 

External ultrasound :

an external ultrasound is commonly used to examine your heart or an unborn baby in your womb.A small hand-held device called a transducer is placed on to your skin, and moved over the part of the body that will be examined . A lubricating gel is put onto your skin tat allows the transducer to move smoothly and ensures there's contact between the sensor and the skin .The transducer is connected to a computer and a monitor .Pulses of ultrasound are sent from a probe in the transducer ,through your skin and into your body.Ultrasound waves are bounced back from the structures of your body and are displayed as an image on the monitor .

As well as producing pictures , an ultrasound scan show movement that can be recorded in video. The external scan is painless.You should not feel anything other than the sensor and the gel on your skin ( which is often cold) .If you are having a scan of your uterus,your full bladder may cause you some discomfort .The whole procedure usually takes from 15 to 45 minutes .

internal ultrasound :

Occasionally doctors need to do internal examination to look more closely at structures such as the prostate gland or womb .This involves an ultrasound probe being placed into the vagina or the rectum .Internal examinations may cause some dicomfort but not usually cause any pain .