Question

name the scientist who invent ultrasonography and echocardiography

Answer 1

an Donald (December 1910 – 19 June 1987) was a Scottish physician who pioneered the use of diagnostic ultrasound in medicine. Whilst Professor of Midwifery at Glasgow University, he first explored the use of ultrasound in the 1950s after seeing it used in the Glasgow shipyards to look for flaws in metallurgy.