The History of Ultrasound: Part 1

The history of ultrasound starts with Lazzaro Spallanzani (1729–1799), an Italian physiologist and priest who designed a set of experiments to explain how bats were able to fly at night. By studying the bat’s ability to see and hear, Spallanzani noted that if a bat was blinded, it was still able to fly confidently through space; however, when a bat was made deaf, even in one ear, it could not fly safely in the experimental environment. On the basis of these findings, Spallanzani hypothesized that bats relied on sound, not their vision, to navigate. In 1938, two Harvard students, Donald Griffin and Robert Galambos, coined the word echolocation to explain how bats generate high-frequency clicks that bounce off surfaces and then receive and use the returned echoes to calculate the exact location of objects within their environment.

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 ,or share it with your friends, or follow me on social media!

…and you can see more anatomical cartoons and comics [Here]. Want another infographic[Over here]

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......

  • A-mode (amplitude-mode) US represents a one-dimensional characterization of a reflected sound wave that uses a pulse-echo technique to determine the depth and dimen­sions of an organ. Echo amplitude is plotted on the vertical axis, and the time needed for the echo to return is plotted on......

  • 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 History of ultrasound:   From Bats and Boats to the Bedside and Beyond Piezoelectricity (from the Greek word piezen, meaning to press or squeeze) was first discovered by brothers Jacques (1856–1941) and Pierre (1859–1906) Curie. They demonstrated that crystals of tourmaline, quartz, topaz, cane sugar,......

error: Content is protected !!