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jan 1, 1952 - New event

Description:

Swedish cardiologist Inge Edler and German physicist Carl Hellmuth Hertz launch the field of echocardiography, by adapting for human use a sonar device (that was used for detecting submarines in World War II) and using it to record echoes from the walls of a human heart. American cardiologist Paul Zoll develops the first external cardiac pacemaker.

Added to timeline:

myocardial infarction treatment & diagnostic evolution over the past 70 years

By파티마
11 Nov 2019
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349

Date:

jan 1, 1952
Now
~ 74 years ago
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