4d and 3d scans - www.babyultrasound.co.uk
The method know as three dimensional ultrasound is that can be used during early pregnancy, it provides 3d pictures of the fetus. Most of the time these ultrasound samples are collated and joined together and animated to created a 4d scan.
Three dimensional scanning works in the same manner to the normal scanning methods except that the ultrasound scanning waves are directed from multiple directions. The ultrasound pulses are reflected back then captured to provide info to construct a 3d image in much the same way as 3d pictures. 3 dimesional ultrasound was started by stephen smith and olaf von ramm at duke university.
It’s important to understand that sonologists everywhere always conjured 3d images of the body in their minds whilst doing 2d scans. However, until recently it was difficult to do this type of reconstruction on on information using ultrasound. The advent of 4d scans for the first time allowed us a view into the brain of a sonologist and allowing us to reconstruct 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 harm due to 3d ultasound scanning, its use in none medical situations should be undertaken with an understanding of the risks involved.
