Blog

The History of Ultrasound: Part 3

The first physician to use ultrasound for medical imaging was Karl Dussik.

Karl Dussik (1908-1968) an Austrian Neurologist

Transducers were placed on both sides of a patient’s partly submerged head. The sound waves were transmitted at a known rate from one transducer to another transducer. The changes in the sound waves were recorded photographically on heat-sensitive paper, creating a representation of what was thought to be the patient’s brain ventricles.

Although later experiments demonstrated that many of these echo variations were actually artifacts secondary to normal reflections and attenuations of the skull, this experiment was one of the earliest attempts to depict an organ in vivo.

 

 

Because of the limitations of the through-transmission technique, this imaging method was largely abandoned in the 1950s.

This technique was replaced by the more-traditional pulse-echo method of US imaging, in which the transducer both produces and receives the transmitted sound wave and its reflected echo.

 

Pulse-echo method!

 

And here it is, the infographic:

Full (and very interesting) article at:

Kaproth-Joslin et al. The History of US: From Bats and Boats to the Bedside and Beyond. Radiographics. Vol 35. May-June 2015: 960-70

 


 

Did you like it? Leave a comment,..share it with your friends,… or follow me on social media!

…and you can see more anatomical cartoons and comics [Here]. Want to read The History of US: Part 1[Over here]

Tags:
No Comments

Post A Comment

Related posts

  • John j. Wild, a World War II surgeon, became interested in using ultrasound as a noninvasive method to detect bowel injury. Using A-mode equipment, originally designed to read radar maps of enemy territory, he was able to accurately measure bowel wall thickness and to identify......

  • Capítulo VII: Galeno de Pérgamo y la teoría del pneuma. Pneuma es una palabra en griego antiguo que significa “respiración” o “espíritu”, palabra vinculada con el aire. Para Galeno había “espíritus” que viajaban por las arterias, las venas y los nervios para dar movimiento a nuestros músculos. Estos......

  • Because bone structures are preserved after death and the rest of the body is not, trepanations are the oldest evidence of surgery among Homo Sapiens. But what could have led to a Homo Sapiens to pierce the head of another fellow Homo Sapiens? And what......

  • It is impossible to know who the first human being was that saw a brain, and what they felt when they saw it. Trepanned skulls have been found in numerous cultures around the world, that is to say, the skulls were intentionally drilled by another......

error: Content is protected !!