4d scans - baby ultrasound.co.uk
The method know as three dimensional ultrasound is that can be used during early pregnancy, it can provide 3d pictures of the fetus. Most of the time these ultrasound images are rapidly captured and joined together and made into a movie to produce a 4d ultrasound scan.
Three dimensional scanning works similarly to the normal ultrasound scanning methods except that the ultrasound scanning pulses can be sent from many directions. The ultrasound pulses can be reflected back then captured to provide info to construct a 3-dimensional picture in much the same way as 3d pictures. 3 dimesional ultasound scanning was started by stephen smith and olaf von ramm.
It is important to understand that sonologists worldwide have always conjured 3d pictures of the body in their minds while carrying out 2d scans. However, until recently it was not possible to do this kind of reconstruction on on patient information using ultrasound. With the introduction of baby scans for the first time allowed us a peek into the brain of a sonologist and hence letting us see the images on the ultrasound machine.
4d ultrasound imaging should utilize ultrasound energy following the same limits as conventional 2d ultrasound to create the 3d images. There is no data to suggest any harm due to 3d ultasound scanning, its use in none essential situations should be undertaken with the understanding that a risk may exist.











