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The method know as 3d ultrasound scanning is that can be used during early pregnancy, it provides 3d images of the fetus. Most times these ultrasound pictures are collated and joined together and animated to make a 4d ultrasound scan.
Three dimensional scans works in the same way to the traditional ultrasound except that the ultrasound pulses are sent from multiple directions. The ultrasound waves are redirected back then captured to provide information to construct a 3-dimensional picture in very much the same way as 3d pictures. 3d ultasound scanning was first developed by olaf von ramm and stephen smith in america.
It’s important to understand that sonologists all over the world always conjured 3d pictures of anatomy or pathology in their minds while doing 2d scans. However, until recently it was very difficult to do this type of reconstruction on patient data acquired using ultasound scanning. The advent of baby scans for the first time allowed us a view 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 harm due to 3d ultasound scanning, its use in non-medical situations needs to be undertaken with an understanding of the risks that may exist.
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