when was ultrasound first used for medical purposes
Medical ultrasound After the French physicist Pierre Curie’s discovery of piezoelectricity in 1880, ultrasonic waves could be deliberately generated for industry. Thereafter, in 1940, the American acoustical physicist Floyd Firestone devised the first ultrasonic echo imaging device, the Supersonic Reflectoscope, to detect internal flaws in metal castings. In 1941, the Austrian neurologist Karl Theo Dussik was in collaboration with his brother, Friedreich, a physicist, likely, the first person to ultrasonically echo image the human body, outlining thereby the ventricles of a human brain.[78][79] Ultrasonic energy was first applied to the human body for medical purposes by Dr George Ludwig at the Naval Medical Research Institute, Bethesda, Maryland in the late 1940s.[80][81] English-born physicist John Wild (1914–2009) first used ultrasound to assess the thickness of bowel tissue as early as 1949; he has been described as the "father of medical ultrasound".[82] Subsequent advances in the field took place concurrently in several countries. But it was not until 1963 when Meyerdirk & Wright launched production of the first commercial hand-held articulated arm compound contact B-mode scanner that ultrasound became generally available for medical use.
Euphrates The Euphrates (/
Computerized Criminal History Computerized Criminal History
Cerebrum With the assistance of the cerebellum, the cerebrum controls all voluntary actions in the body.
Eye injuries during general anaesthesia Methods to prevent intraoperative corneal injuries include
Buddhism in Southeast Asia