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The method know as three dimensional ultrasound scanning is used during early pregnancy, it can provide 3d pictures of the fetus. Most times these pictures are quickly collected and combined and animated to created a “4d ultrasound scan”.

Three dimensional scanning works in the same way to the usual scanning methods except that the ultrasound scanning pulses are sent from many directions. The waves can be redirected back then captured to provide info to construct a 3 d picture in very much the same way as 3d pictures. 3 dimesional ultrasound was devised by olaf ramm abs stephen smith.

It is important to understand that sonologists worldwide have always pictured 3d pictures of the body in their minds while doing their 2d scans. However, until recently it was difficult to do this kind of reconstruction on on information using ultrasound. The advent of 4d 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.

The 3d/4d ultrasound image 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 ultrasound, its use in none medical situations needs to be undertaken with an understanding of the risks that may exist.