European Journal of Echocardiography Advance Access published online on October 15, 2008
European Journal of Echocardiography, doi:10.1093/ejechocard/jen233
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Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2008. For permissions please email: journals.permissions@oxfordjournals.org
The inaugurator of transmitted echocardiography: Prof. Dr Wolf-Dieter Keidel
European Prevention Center, Ruhrorter Strasse 195, D-47119 Duisburg, Germany
* Tel: +49 203 48460 700; fax: +49 203 48460 799. E-mail address: nixdorff@epc-checkup.de
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Usually, the inauguration of clinical echocardiography is attributed to Edler and Hertz who published their first paper in 1954,1 followed by Japanese authors in 1956.2 It is less well-known that there was a first description on using ultrasound for investigating the heart by Wolf-Dieter Keidel already a decade earlier3 (Figure 1). His first investigations were conducted at the Physiologic Institute of the University of Erlangen, Germany, which had become prominent scientifically for its research and mathematical definition of human hearing and its work on audible sound. Apparently, the institute also became involved in the study of inaudible ‘sound’.
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In 1949 Keidel presented3 and in 1950 he published4 about the ‘acoustic heart