Who made the sonogram?

The sonogram, or ultrasound imaging, was developed through the contributions of several scientists and engineers. Key figures include Dr. Karl Dussik, who created the first medical ultrasound in the 1940s, and Dr. Ian Donald, who advanced its use in obstetrics in the late 1950s. The technology relies on the principles of sonar, initially developed for submarine navigation during World War I. Over the years, advancements in technology have greatly improved the clarity and utility of sonograms in medical diagnostics.