Fetal ultrasonography in large domestic animals
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The starting point of the development of the ultrasonography can be traced back to the early 1900s. In 1906 the Sonar, “Sound Navigation and Ranging”, was invented by the naval architect Lewis Nixon (H.R.S. Sastry, D.D. Ebenezer, 2002). By transmitting sound waves underwater and detecting the returning reflection waves, ships could locate icebergs and navigate their way through dangerous waters.